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Электронный компонент: SA58603

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Philips
Semiconductors
SA58603
High precision operational amplifier,
comparator, and voltage reference
Product data
Supersedes data of 2001 Oct 03
2002 Nov 13
INTEGRATED CIRCUITS
Philips Semiconductors
Product data
SA58603
High precision operational amplifier,
comparator, and voltage reference
2
2002 Nov 13
GENERAL DESCRIPTION
The SA58603 is comprised of a low voltage, high precision dual
operational amplifier, a comparator, and a reference voltage source.
The input offset voltage is typically 100
V with a very low
temperature drift of
1
V/
C. The SA58603 supply current is
typically 100
A per amplifier and it operates from 1.8 V to 6 V
single supply.
Having single power supply capability, low current consumption, low
offset voltage, low input offset current and low input bias current, the
SA58603 is ideal for battery-powered applications and amplification
of very small signals. It is excellent for precision amplifiers in gas
burners and gas pilot water heaters which use thermal couple heat
sensors.
FEATURES
General
Functionality to 1.8 V typical
Low supply current: 100
A per amplifier (typical)
Amplifier section
Very low input offset voltage: 100
V (typical)
Very low input offset drift:
1
V/
C (typical)
Low input offset current: 1 nA (typical)
Input bias current: 50 nA (typical)
Open loop gain: 100 dB (typical)
Common mode input includes ground
Comparator section
Input offset voltage:
1.0 mV (typical)
Low input offset voltage voltage drift (40 to +85
C):
10
V (typical)
Input bias current: 25 nA (typical)
Output sink current: 5 mA (minimum)
Reference voltage section
Reference voltage: 1.27 V
50 mV
Reference voltage temperature characteristics:
100 ppm/
C (typical)
Output current: 0.3 mA (minimum)
APPLICATIONS
Gas burners
Gas water heaters
Tankless gas water heaters
SIMPLIFIED DEVICE DIAGRAM
7
2
1
AOUT
AIN
AIN+
GND
1.27 V
R
22 k
COMPIN
COMPOUT
6
5
4
8
3
V
S
COMPARATOR
V
CC
AMPLIFIER
SL01536
Figure 1. Simplified device diagram.
Philips Semiconductors
Product data
SA58603
High precision operational amplifier,
comparator, and voltage reference
2002 Nov 13
3
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
TEMPERATURE
TYPE NUMBER
NAME
DESCRIPTION
RANGE
SA58603D
SO8
plastic small outline package; 8 leads; body width 3.9 mm
40 to +85
C
PIN CONFIGURATION
SL01535
1
2
3
4
8
7
6
5
TOP VIEW
SO8
AIN+
AIN
AOUT
GND
V
CC
COMPOUT
V
S
COMIN
Figure 2. Pin configuration.
PIN DESCRIPTION
PIN
SYMBOL
DESCRIPTION
1
AIN+
Non-inverting input of Op Amp. This is a PNP amplifier with the reference voltage as its supply voltage.
2
AIN
Inverting input of Op Amp. This is a PNP amplifier with the reference voltage as its supply voltage.
3
AOUT
Output of Op Amp. This is a NPN emitter follower output with a 22 k
internal on-chip pull-down resistor. Its supply
voltage is V
CC
.
4
GND
Ground.
5
COMPIN
Inverting input of Comparator. This is a PNP amplifier with V
CC
as its positive supply voltage.
6
V
S
Reference voltage output. The output reference is typically 1.27 V. The output reference is derived from the series
combination of a NPN transistor (configured as a diode with the base shorted to the collector) and a 120 k
resistor.
7
COMPOUT
Output of Comparator. It is an open collector output stage which requires an external pull-up resistor.
8
V
CC
Positive supply. Its operating range is 1.8 to 6.0 V.
Philips Semiconductors
Product data
SA58603
High precision operational amplifier,
comparator, and voltage reference
2002 Nov 13
4
EQUIVALENT CIRCUITS
PIN
NUMBER
PIN NAME
INTERNAL EQUIVALENT CIRCUIT
PIN
NUMBER
PIN NAME
INTERNAL EQUIVALENT CIRCUIT
1
AIN+
R
25 k
R
18 k
V
S
5
COMPIN
R
43 k
R
39 k
V
S
2
AIN
R
25 k
R
18 k
V
S
6
V
S
R
120 k
V
CC
3
AOUT
R
22 k
V
CC
7
COMPOUT
V
CC
R
47 k
4
GND
8
V
CC
MAXIMUM RATINGS
SYMBOL
PARAMETER
MIN.
MAX.
UNIT
V
CC
Single supply voltage
0.3
+10
V
V
IN
Input voltage
0.3
+10
V
T
stg
Storage temperature
40
+125
C
T
amb
Operating temperature
40
+85
C
P
Power dissipation
300
mW
Philips Semiconductors
Product data
SA58603
High precision operational amplifier,
comparator, and voltage reference
2002 Nov 13
5
ELECTRICAL CHARACTERISTICS
V
CC
= 3.0 V, V
IN
= 0 V, and T
amb
= 25
C, unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
I
CC
Supply current
0.1
0.15
mA
I
OVS
Reference voltage output current
0.3
mA
V
S
Reference voltage
1.22
1.27
1.32
V
V
S
Reference voltage temperature drift
100
ppm/
C
PSRR
Power supply rejection ratio
f = 100 Hz
50
60
dB
V
CC
Power supply voltage operating range
1.8
3.0
6.0
V
Amplifier section (note 1)
V
INA
Input voltage range
0.2
0.3
V
V
IOA
Input offset voltage
0.1
0.35
mV
V
IO
/
T
Input offset voltage temperature drift
T
amb
= 20 to +75
C
1
3
V/
C
I
IOA
Input offset current
1
10
nA
I
i(bias)A
Input bias current
50
150
nA
G
v(ol)A
Open-loop voltage gain
80
100
dB
I
OA
Output current
V
IN
= 10 mV; V
O
= 0.5 V
0.5
mA
V
OA
Output voltage swing
V
IN
= 5 to +25 mV; R
L
= 10 k
0.01
V
CC
1.0
V
Comparator section (note 2)
V
IOC
Input offset voltage
V
IN
= 5 mV
1.0
3.5
mV
V
IOC
/
T
Input offset voltage temperature drift
V
IN
= 5 mV
10
30
V/
C
I
i(bias)C
Input bias current
V
IN
= 5 mV
25
75
nA
I
O(sink)
Output sink current
V
IN
= 10 mV; V
O
= 0.4 V
5
mA
I
LO
Output leakage current
V
O
= V
CC
+ 1 V
0.2
A
V
SAT
Output saturation voltage
V
IN
= 10 mV; I
O(sink)
= 5 mA
200
400
mV
NOTES:
1. Amplifier output is emitter follower with an on-chip 22 k
pull-down resistor.
2. Comparator output is open collector; it requires an external pull-up resistor. See application section on how to determine this resistor.
Philips Semiconductors
Product data
SA58603
High precision operational amplifier,
comparator, and voltage reference
2002 Nov 13
6
TYPICAL CHARACTERIZATION CURVES
T
amb
= 25
C, V
CC
= 3 V, V
IN
= 0 V, unless otherwise specified.
SL01915
SUPPL
Y

CURRENT
, I (mA)
CC
AMBIENT TEMPERATURE, T
amb
(
C)
25
0
25
50
75
100
140
120
100
80
60
160
50
Figure 3. Supply current versus ambient temperature.
SL01916
REFERENCE
VOL
T
AGE, V (V)
S
AMBIENT TEMPERATURE, T
amb
(
C)
25
0
25
50
75
100
1.276
1.272
1.268
1.264
1.260
1.280
50
Figure 4. Reference voltage versus ambient temperature.
AMPLIFIER
INPUT

OFFSET
VOL
T
AGE, V (mV)
IOA
SL01920
AMBIENT TEMPERATURE, T
amb
(
C)
25
0
25
50
75
100
0.10
0.05
0.10
0.15
0.20
0.20
50
0.05
0
0.15
Figure 5. Amplifier input offset voltage versus
ambient temperature.
AMPLIFIER
INPUT

OFFSET

CURRENT
, I (nA)
IOA
SL01917
AMBIENT TEMPERATURE, T
amb
(
C)
25
0
25
50
75
100
1.6
1.4
1.2
1.0
0.8
1.8
50
Figure 6. Amplifier input offset current versus
ambient temperature.
AMPLIFIER INPUT
BIAS CURRENT
,
I
I(bias)A
SL01919
AMBIENT TEMPERATURE, T
amb
(
C)
25
0
25
50
75
100
53
52
51
50
49
54
50
(nA)
Figure 7. Amplifier input bias current versus
ambient temperature.
AMPLIFIER
OUTPUT

CURRENT
, I (mA)
OA
SL01918
AMBIENT TEMPERATURE, T
amb
(
C)
25
0
25
50
75
100
2.5
2.0
1.5
1.0
0.5
3.0
50
V
IN
= 10 mV
V
OA
= 0.5 V
Figure 8. Amplifier output current versus ambient temperature.
Philips Semiconductors
Product data
SA58603
High precision operational amplifier,
comparator, and voltage reference
2002 Nov 13
7
TYPICAL CHARACTERIZATION CURVES
(continued)
T
amb
= 25
C, V
CC
= 3 V, V
IN
= 0 V, unless otherwise specified.
AMPLIFIER
OUTPUT
VOL
T
AGE, LOW
, V (mV)
OAL
SL01921
AMBIENT TEMPERATURE, T
amb
(
C)
25
0
25
50
75
100
1.3
1.1
0.9
0.7
1.5
50
V
IN
= 5 mV
R
L
= 10 k
Figure 9. Amplifier output voltage, LOW
versus ambient temperature.
AMPLIFIER
OUTPUT
VOL
T
AGE, HIGH, V (V)
OAH
SL01922
AMBIENT TEMPERATURE, T
amb
(
C)
25
0
25
50
75
100
2.35
2.30
2.25
2.20
2.15
2.40
50
V
IN
= 5 mV
R
L
= 10 k
Figure 10. Amplifier output voltage, HIGH
versus ambient temperature.
COMP
ARA
T
OR
INPUT

OFFSET
VOL
T
AGE, V (mV)
IOC
SL01923
AMBIENT TEMPERATURE, T
amb
(
C)
25
0
25
50
75
100
1.4
1.2
1.0
0.8
0.6
1.6
50
V
IN
= 5 mV
Figure 11. Comparator input offset voltage versus
ambient temperature.
COMP
ARA
T
OR INPUT
BIAS CURRENT
,
I
I(bias)C
SL01924
AMBIENT TEMPERATURE, T
amb
(
C)
25
0
25
50
75
100
25.5
25.4
25.1
25.0
24.9
25.6
50
25.2
25.3
(nA)
V
IN
= 5 mV
Figure 12. Comparator bias current versus
ambient temperature.
COMP
ARA
T
OR OUTPUT
SINK CURRENT
,
O(sink)C
SL01925
AMBIENT TEMPERATURE, T
amb
(
C)
25
0
25
50
75
100
30
25
20
15
10
35
50
V
IN
= 10 mV
V
OC
= 0.4 V
(mA)
I
Figure 13. Comparator output sink current versus
ambient temperature.
COMP
ARA
T
OR OUTPUT

SA
TURA
TION
VOL
T
AGE,
SA
T
SL01926
AMBIENT TEMPERATURE, T
amb
(
C)
25
0
25
50
75
100
230
210
190
170
150
250
50
V
IN
= 10 mV
I
O(sink)C
= 5 mA
(mV)
V
Figure 14. Comparator output saturation voltage versus
ambient temperature.
Philips Semiconductors
Product data
SA58603
High precision operational amplifier,
comparator, and voltage reference
2002 Nov 13
8
TYPICAL CHARACTERIZATION CURVES
(continued)
T
amb
= 25
C, V
CC
= 3 V, V
IN
= 0 V, unless otherwise specified.
SUPPL
Y

CURRENT
, I (mA)
CC
SL01927
SUPPLY VOLTAGE, V
CC
(V)
4
6
8
10
120
110
100
90
80
130
2
Figure 15. Supply current versus supply voltage.
REFERENCE
VOL
T
AGE, V (V)
S
SL01928
SUPPLY VOLTAGE, V
CC
(V)
4
6
8
10
1.273
1.271
1.269
1.267
1.265
1.275
2
Figure 16. Reference voltage versus supply voltage.
AMPLIFIER
INPUT

OFFSET
VOL
T
AGE, V (nV)
IOA
SL01929
SUPPLY VOLTAGE, V
CC
(V)
4
6
8
10
130
120
110
100
90
140
2
Figure 17. Amplifier input offset voltage versus supply voltage.
AMPLIFIER
INPUT

OFFSET

CURRENT
, I (nV)
IOA
SL01930
SUPPLY VOLTAGE, V
CC
(V)
4
6
8
10
1.2
1.0
0.8
0.6
0.4
1.4
2
Figure 18. Amplifier input offset current versus supply voltage.
AMPLIFIER
INPUT

BIAS
CURRENT
, I (nV)
I(bias)A
SL01931
SUPPLY VOLTAGE, V
CC
(V)
4
6
8
10
50.6
50.2
49.8
49.4
49.0
51.0
2
Figure 19. Amplifier input bias current versus supply voltage.
AMPLIFIER
OUTPUT

CURRENT
, I (mA)
OA
SL01932
SUPPLY VOLTAGE, V
CC
(V)
4
6
8
10
3.1
2.7
2.3
1.9
1.5
3.5
2
V
IN
= 10 mV
V
OA
= 0.5 V
Figure 20. Amplifier output current versus supply voltage.
Philips Semiconductors
Product data
SA58603
High precision operational amplifier,
comparator, and voltage reference
2002 Nov 13
9
TYPICAL CHARACTERIZATION CURVES
(continued)
T
amb
= 25
C, V
CC
= 3 V, V
IN
= 0 V, unless otherwise specified.
AMPLIFIER
OUTPUT
VOL
T
AGE, LOW
, V (mV)
OAL
SL01934
SUPPLY VOLTAGE, V
CC
(V)
4
6
8
10
1.7
1.5
1.4
1.2
1.1
1.8
2
V
IN
= 5 mV
R
L
= 10 k
1.3
1.6
Figure 21. Amplifier output voltage, LOW
versus supply voltage.
AMPLIFIER
OUTPUT
VOL
T
AGE, HIGH, V (V)
OAH
SL01933
SUPPLY VOLTAGE, V
CC
(V)
4
6
8
10
8
6
4
2
0
10
2
V
IN
= 25 mV
R
L
= 10 k
Figure 22. Amplifier output voltage, HIGH
versus supply voltage.
COMP
ARA
T
OR
INPUT

OFFSET
VOL
T
AGE, V (mV)
IOC
SL01935
SUPPLY VOLTAGE, V
CC
(V)
4
6
8
10
1.10
1.06
1.04
1.00
0.98
2
V
IN
= 5 mV
1.02
1.08
Figure 23. Comparator input offset voltage
versus supply voltage.
COMP
ARA
T
OR INPUT
BIAS CURRENT
,
I(bias)A
SL01937
SUPPLY VOLTAGE, V
CC
(V)
4
6
8
10
30
28
27
25
24
2
V
IN
= 5 mV
26
29
(nA)
I
Figure 24. Comparator bias current versus supply voltage.
COMP
ARA
T
OR OUTPUT
SINK CURRENT
,
O(sink)C
SL01936
SUPPLY VOLTAGE, V
CC
(V)
4
6
8
10
21.4
20.4
19.9
18.9
18.4
2
V
IN
= 10 mV
V
OC
= 0.4 V
19.4
20.9
I
(mA)
Figure 25. Comparator output sink current
versus supply voltage.
COMP
ARA
T
OR OUTPUT

SA
TURA
TION
VOL
T
AGE,
SA
T
SL01938
SUPPLY VOLTAGE, V
CC
(V)
4
6
8
10
210
200
195
185
180
2
190
205
V
(mV)
V
IN
= 10 mV
I
O(sink)C
= 5 mA
Figure 26. Comparator output saturation voltage
versus supply voltage.
Philips Semiconductors
Product data
SA58603
High precision operational amplifier,
comparator, and voltage reference
2002 Nov 13
10
TYPICAL CHARACTERIZATION CURVES
(continued)
T
amb
= 25
C, V
CC
= 3 V, V
IN
= 0 V, unless otherwise specified.
POWER
SUPPL
Y
REJECTION RA
TIO,
PSSR
(dB)
SL01939
FREQUENCY, f (kHz)
1
10
100
0
30
40
60
70
0.1
50
10
20
Figure 27. Power supply rejection ratio versus frequency.
OPEN
LOOP
VOL
T
AGE GAIN, G
SL01940
FREQUENCY, f (kHz)
1
10
100
40
30
10
0
0.01
20
60
50
(dB)
V(ol)A
70
80
90
0.1
100
1000
10000
Figure 28. Amplifier open loop gain versus frequency.
REFERENCE
VOL
T
AGE, V (V)
S
SL01941
OUTPUT CURRENT, I
OA
(mA)
1
2
4
5
1.29
1.24
1.19
1.14
1.09
1.34
0
3
Figure 29. Reference voltage versus output current.
COMP
ARA
T
OR OUTPUT

SA
TURA
TION
VOL
T
AGE,
SL01942
OUTPUT SINK CURRENT, I
O(sink)C
(mA)
5
10
20
25
500
300
200
100
0
600
0
15
V (mV)
SA
T
400
V
IN
= 10 mV
Figure 30. Comparator output saturation voltage
versus sink current.
Philips Semiconductors
Product data
SA58603
High precision operational amplifier,
comparator, and voltage reference
2002 Nov 13
11
APPLICATION INFORMATION
Typical gas pilot detection circuit
Figure 31 shows a typical application of the SA58603 in which the
input amplifier is driven by a thermocouple heated by the pilot flame
in a water heater or gas burner. The circuit comparator may be
programmed to detect when the pilot is out. The IC is operated from
a single voltage supply making it capable of battery backup with loss
of AC power. It may be operated from a one-cell Lithium battery or
two alkaline cells. 10 nF bypass capacitors are placed from V
CC
and
reference voltage output (pin 6) to ground to filter power supply
noise and interference from external noise sources.
Selecting external components
Gain
Recommended amplifier gain is 40 dB. The gain is is set by the
combination of R1, R2, and R3 as shown in the following equations:
Av
+
(R3
)
R2)
R3
; Av (dB) = 20 log (Av); R3 = R1
k
R2
For a gain of 40 dB, Av = 100 V/V;
if R2 = 1 k
, then 99*R3 = 1 k
; R3 = 10.1
.
R3
+
R1
R2
(R1
)
R2)
; R3
R1 + R3
R2 = R1
R2:
R3
R2 = R1 (R2 R3)
Thus R1
+
R3
R2
(R2
*
R3)
+
10.2
W
Comparator output pull-up resistor
The comparator output pull-up resistor is determined by the
following formula:
R
+
V
CC
*
V
SAT(max)
I
O(sink)(min)
where V
SAT(max)
= 400 mV, and I
O(sink)(min)
= 5 mA.
Comparator threshold voltage
The comparator threshold voltage is determined by R4 and R5.
They form a voltage divider from the reference voltage output (V
S
,
Pin 6) to ground. In the application example, V
COMP
, the comparator
input (COMPIN, Pin 5) is connected to the junction of R4 and R5.
The input level is calculated by following relationship:
V
COMP
+
1.27V
R5
(R4
)
R5)
7
2
1
GND
1.27 V
R
22 k
COMPARATOR
5
8
COMPARATOR
V
CC
AMPLIFIER
SL01537
AMPLIFIER OUTPUT
ADC TO INPUT
RESISTANCE
PULL-UP
RESISTANCE
4
R5
R4
6
V
COMP
TO ADC AV
REF
TO ADC AV
SS
3
THERMOCOUPLE
R1
R3
R2
Figure 31. Typical flame detection circuit.
Philips Semiconductors
Product data
SA58603
High precision operational amplifier,
comparator, and voltage reference
2002 Nov 13
12
PACKING METHOD
SL01305
TAPE DETAIL
COVER TAPE
CARRIER TAPE
REEL
ASSEMBLY
TAPE
GUARD
BAND
BARCODE
LABEL
BOX
Figure 32. Tape and reel packing method.
Philips Semiconductors
Product data
SA58603
High precision operational amplifier,
comparator, and voltage reference
2002 Nov 13
13
SO8:
plastic small outline package; 8 leads; body width 3.9 mm
1.73
0.068
0.51
0.33
0.013
0.020
B
2
4.95
4.80
0.189
0.195
1.27
0.38
0.050
0.015
0.076
0.003
SO8
pin 1 index
4.95
4.80
Philips Semiconductors
Product data
SA58603
High precision operational amplifier,
comparator, and voltage reference
2002 Nov 13
14
REVISION HISTORY
Rev
Date
Description
_2
20021113
Product data; second version (9397 750 10671). Supersedes SA58603_1 of 2001 Oct 03
(9397 750 08955).
Engineering Change Notice 8532289 29151 (date: 20021105).
Modifications:
Add "Typical characterization curves" section.
_1
20011003
Product data; initial version (9397 750 08955).
Engineering Change Notice 8532289 27197 (date: 20011003).
Philips Semiconductors
Product data
SA58603
High precision operational amplifier,
comparator, and voltage reference
2002 Nov 13
15
Definitions
Short-form specification -- The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limiting values definition -- Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given
in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information -- Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no
representation or warranty that such applications will be suitable for the specified use without further testing or modification.
Disclaimers
Life support -- These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be
expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree
to fully indemnify Philips Semiconductors for any damages resulting from such application.
Right to make changes -- Philips Semiconductors reserves the right to make changes in the products--including circuits, standard cells, and/or software--described
or contained herein in order to improve design and/or performance. When the product is in full production (status `Production'), relevant changes will be communicated
via a Customer Product/Process Change Notification (CPCN). Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys
no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent,
copyright, or mask work right infringement, unless otherwise specified.
Contact information
For additional information please visit
http://www.semiconductors.philips.com.
Fax: +31 40 27 24825
For sales offices addresses send e-mail to:
sales.addresses@www.semiconductors.philips.com.
Koninklijke Philips Electronics N.V. 2002
All rights reserved. Printed in U.S.A.
Date of release: 11-02
Document order number:
9397 750 10671
Philips
Semiconductors
Data sheet status
[1]
Objective data
Preliminary data
Product data
Product
status
[2] [3]
Development
Qualification
Production
Definitions
This data sheet contains data from the objective specification for product development.
Philips Semiconductors reserves the right to change the specification in any manner without notice.
This data sheet contains data from the preliminary specification. Supplementary data will be published
at a later date. Philips Semiconductors reserves the right to change the specification without notice, in
order to improve the design and supply the best possible product.
This data sheet contains data from the product specification. Philips Semiconductors reserves the
right to make changes at any time in order to improve the design, manufacturing and supply. Relevant
changes will be communicated via a Customer Product/Process Change Notification (CPCN).
Data sheet status
[1] Please consult the most recently issued data sheet before initiating or completing a design.
[2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL
http://www.semiconductors.philips.com.
[3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
Level
I
II
III