Document Outline
- GENERAL DESCRIPTION
- FEATURES
- APPLICATIONS
- SIMPLIFIED DEVICE DIAGRAM
- ORDERING INFORMATION
- SA58601 PIN CONFIGURATION
- SA58604 PIN CONFIGURATION
- SA58601 PIN DESCRIPTION
- SA58604 PIN DESCRIPTION
- MAXIMUM RATINGS
- ELECTRICAL CHARACTERISTICS
- TYPICAL CHARACTERIZATION CURVES
- FUNCTIONAL DESCRIPTION
- EQUIVALENT CIRCUITS
- APPLICATION INFORMATION
- PACKING METHOD
- PACKAGE OUTLINE
- REVISION HISTORY
- Data sheet status
- Definitions
- Disclaimers
Philips
Semiconductors
SA58601; SA58604
Dual and quad operational amplifiers
with shunt regulator
Product data
Supersedes data of 2001 Oct 03
2002 Nov 08
INTEGRATED CIRCUITS
Philips Semiconductors
Product data
SA58601; SA58604
Dual and quad operational amplifiers
with shunt regulator
2
2002 Nov 08
GENERAL DESCRIPTION
The SA58601 is comprised of a low offset voltage dual operational
amplifier and a shunt regulator; the SA58604 combines a low offset
voltage quad operational amplifier and shunt regulator. The input
offset voltage is typically 200
V.
They are used in battery chargers, switching power supplies, and
other voltage and current controlled applications. With low input
offset voltage, they are well suited for handling current detection
signals and other low amplitude signals.
FEATURES
Op amp section
Low supply current: 600
A per amplifier (typical)
Low input offset voltage: 200
V (typical)
Low input offset current: 5 nA (typical)
Low input bias current: 30 nA (typical)
Common mode input: Ground to V
CC
1 V
Operating supply: 2 V to 20 V
Shunt regulator section
Reference voltage: 2.5 V (typical)
Reference voltage fluctuations (20 to +80
C): 5 mV (typ)
Minimum cathode current: 0.4 mA (typical)
APPLICATIONS
Signal conditioning and sensing amplification
Switching power supply
AC adapter
Battery charger
SIMPLIFIED DEVICE DIAGRAM
2
3
1
5
4
6
7
8
OUT1
IN1-
IN1+ (REF)
GND
OUT2
IN2+
IN2-
2.5 V
2
3
1
5
4
6
7
8
OUT1
IN1-
IN1+ (REF)
GND
OUT2
IN2+
IN2-
IN3+
OUT3
IN3-
OUT4
IN4+
IN4
2.5 V
14
12
13
11
10
9
SA58601D
SA58604D
V
CC
SL01542
V
CC
Figure 1. Simplified device diagram.
Philips Semiconductors
Product data
SA58601; SA58604
Dual and quad operational amplifiers
with shunt regulator
2002 Nov 08
3
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
TEMPERATURE
TYPE NUMBER
NAME
DESCRIPTION
RANGE
SA58601D
SO8
plastic small outline package; 8 leads; body width 3.9 mm
40 to +85
C
SA58604D
SO14
plastic small outline package; 14 leads; body width 4.4 mm
40 to +85
C
Part number marking
Each device is marked with three or four lines of alphanumeric
codes. The first three letters of the top line designate the product.
The fourth letter, represented by `x', is a date tracking code. The
remaining lines of characters are internal manufacturing codes.
Part number
Marking
SA58601D
A G T x
SA58604D
A G U x
2
3
1
5
4
6
7
8
A G T x
SL01543
2
3
1
11
4
12
13
14
A G U x
5
6
8
7
9
10
SA58601D
SA58604D
SA58601 PIN CONFIGURATION
SL01540
1
2
3
4
8
7
6
5
TOP VIEW
SO8
OUT1
IN1
IN1+ (REF)
GND
V
CC
OUT2
IN2
IN2+
Figure 2. Pin configuration.
SA58601 PIN DESCRIPTION
PIN
SYMBOL
DESCRIPTION
1
OUT1
Output of Amp 1
2
IN1
Inverting input of Amp 1
3
IN1+ (REF)
Non-inverting input of Amp 1 and
reference voltage output
4
GND
Ground
5
IN2+
Non-inverting input of Amp 2
6
IN2
Inverting input of Amp 2
7
OUT2
Output of Amp 2
8
V
CC
Positive supply
SA58604 PIN CONFIGURATION
SL01541
1
2
3
4
14
13
12
11
TOP VIEW
SO14
OUT1
IN1
IN1+ (REF)
V
CC
OUT4
IN4
IN4+
GND
5
6
7
10
9
8
IN2+
IN2
OUT2
IN3+
IN3
OUT3
Figure 3. Pin configuration.
SA58604 PIN DESCRIPTION
PIN
SYMBOL
DESCRIPTION
1
OUT1
Output of Amp 1
2
IN1
Inverting input of Amp 1
3
IN1+ (REF)
Non-inverting input of Amp 1 and
reference voltage output
4
V
CC
Positive supply
5
IN2+
Non-inverting input of Amp 2
6
IN2
Inverting input of Amp 2
7
OUT2
Output of Amp 2
8
OUT3
Output of Amp 3
9
IN3
Inverting input of Amp 3
10
IN3+
Non-inverting input of Amp 3
11
GND
Ground
12
IN4+
Non-inverting input of Amp 4
13
IN4
Inverting input of Amp 4
14
OUT4
Output of Amp 4
Philips Semiconductors
Product data
SA58601; SA58604
Dual and quad operational amplifiers
with shunt regulator
2002 Nov 08
4
MAXIMUM RATINGS
SYMBOL
PARAMETER
MIN.
MAX.
UNIT
V
CC
Single supply voltage
0.3
+24
V
V
IN
Input voltage
0.3
+10
V
T
stg
Storage temperature
40
+125
C
T
amb
Operating temperature
40
+85
C
P
D
Power dissipation
SA58601
300
mW
SA58604
350
mW
ELECTRICAL CHARACTERISTICS
V
CC
= 5 V; T
amb
= 25
C, unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
CC
Power supply voltage operating range
(Note 1)
2.0
3.0
20
V
Op amp
V
IO
Input offset voltage
0.2
0.9
mV
I
IO
Input offset current (excluding Amp 1)
1
50
nA
I
i(bias)
Input bias current
50
150
nA
V
IN
Common mode Input voltage range
(excluding Amp 1)
0
V
CC
1.0
V
I
CC
Supply current
SA58601D
R
L
=
0.6
1.0
mA
SA58604D
R
L
=
1.2
2.0
mA
G
ol
Open loop gain
100
dB
V
OL
LOW-level output voltage
R
L
=
10
100
mV
V
OH
HIGH-level output voltage
R
L
=
V
CC
1.1
V
CC
0.8
V
CMRR
Common mode rejection ratio
65
85
dB
PSRR
Power supply rejection ratio
65
100
dB
I
O(source)
Output current source
20
35
mA
I
O(sink)
Output current sink
10
20
mA
Shunt regulator
V
ref
Reference voltage
2.450
2.500
2.550
V
V
ref
Reference voltage fluctuation
T
amb
= 40 to +85
C
5
17
mV
I
min
Minimum cathode current
0.4
1.0
mA
Z
KA
Dynamic impedance
0.4
0.7
NOTES:
1. Minimum value of operating voltage is for op amp only.
Philips Semiconductors
Product data
SA58601; SA58604
Dual and quad operational amplifiers
with shunt regulator
2002 Nov 08
5
TYPICAL CHARACTERIZATION CURVES
V
CC
= 5 V, T
amb
= 25
C, unless otherwise specified.
SUPPL
Y
CURRENT
, I (mA)
SL01943
SUPPLY VOLTAGE, V
CC
(V)
0
5
15
20
30
1.6
1.2
0.8
0.4
0
10
25
0.2
0.6
1.0
1.4
CC
SA58604
SA58601
Figure 4. Supply current versus supply voltage.
OUTPUT VOL
T
AGE, V (V)
SL01944
OUTPUT SINK CURRENT, I
O(sink)
(mA)
0.01
0.1
10
100
10
1
0.01
1
0.1
O
Figure 5. Output voltage versus sink current.
OUTPUT VOL
T
AGE, V (V)
SL01945
OUTPUT SOURCE CURRENT, I
O(source)
(mA)
0.01
0.1
10
100
4.0
0
1
0.5
O
1.0
1.5
2.0
2.5
3.0
3.5
Figure 6. Output voltage versus source current.
REFERENCE
VOL
T
AGE, V (V)
SL01946
CATHODE CURRENT, I
(Cathode)
(mA)
0.01
0.1
10
100
0
1
0.5
ref
1.0
1.5
2.0
2.5
3.0
3.5
0.001
Figure 7. Reference voltage versus cathode current.
SL01947
AMBIENT TEMPERATURE, T
amb
(
C)
25
0
25
50
75
2.490
2.488
2.486
2.484
2.482
2.480
REFERENCE
VOL
T
AGE, V (V)
ref
Figure 8. Reference voltage versus ambient temperature.
SL01948
AMBIENT TEMPERATURE, T
amb
(
C)
25
0
25
50
75
0
0.05
0.10
0.15
0.20
0.25
INPUT
OFFSET
VOL
T
AGE, V (mV)
IO
Figure 9. Input offset voltage versus ambient temperature.
Philips Semiconductors
Product data
SA58601; SA58604
Dual and quad operational amplifiers
with shunt regulator
2002 Nov 08
6
TYPICAL CHARACTERIZATION CURVES
(continued)
V
CC
= 5 V, T
amb
= 25
C, unless otherwise specified.
SL01949
FREQUENCY, f (Hz)
1
10
100
1000
5
4
3
2
1
0
DYNAMIC IMPEDANCE, Z ( )
KA
Figure 10. Dynamic impedance versus frequency.
SL01950
FREQUENCY, f (Hz)
10
100
1000
120
100
60
40
20
0
OPEN
LOOP
VOL
T
AGE GAIN, G (dB)
ol
1
0.1
0.01
0.001
80
Figure 11. Open loop voltage gain versus frequency.
FUNCTIONAL DESCRIPTION
General description
The SA58601 and SA58604 are dual and quad, low power,
precision, single supply operational amplifiers with a shunt voltage
reference connected to the non-inverting terminal of the first
amplifier. The internal circuit diagrams for the amplifiers and
reference circuits are shown in Figures 12 and 13. With the ability to
operate over a wide supply voltage range of 2 V to 20 V, they may
be used in various applications, such as battery chargers, switching
power supplies, AC adapters, instrumentation and sense amplifiers.
Amplifiers
The amplifiers have low input offset voltage of typically 200
V. They
are well suited for handling current detection signals and other low
amplitude signals. With low supply current of 600
A per amplifier
and the ability to operate from a single supply down to 2 V makes
them suitable for battery powered applications.
Shunt regulator
The on-chip shunt regulator circuit has its cathode internally
connected to the non-inverting terminal of the first amplifier. The
cathode is externally biased by a pull-up resistor. At power supply
voltage of 5 V or greater, the reference is set at 2.5 V. Figure 7,
"Reference voltage versus cathode current", may be used to
determine typical cathode current to achieve a desired reference
voltage. The typical minimum cathode current needed for 2.5 V is
400
A. To achieve 2.5 V over voltage and temperature, a cathode
current of 1 mA is recommended.
For operation at less than 5 V supply voltage, the reference voltage
should be set midway between V
CC
and ground.
Philips Semiconductors
Product data
SA58601; SA58604
Dual and quad operational amplifiers
with shunt regulator
2002 Nov 08
7
EQUIVALENT CIRCUITS
GND
V
CC
IN+
IN
OUT
SL01539
Figure 12. Amplifier equivalent circuit.
GND
REF
SL01538
Figure 13. Reference/Shunt regulator equivalent circuit.
Philips Semiconductors
Product data
SA58601; SA58604
Dual and quad operational amplifiers
with shunt regulator
2002 Nov 08
8
APPLICATION INFORMATION
Common Mode Rejection (CMR) errors
When used with high resistance sensors, differential amplifiers will
have high CMR errors due to their relatively low input impedance.
CMR errors also are caused by input resistor mismatch. CMR
performance is greatly improved with a configuration that eliminate
the effects of external resistance matching errors.
Biasing of single supply op amps
The resistor-divider biasing network shown in Figure 14 is low cost
and keeps the op amp output voltage at V
CC
/2. However, the op
amp's CMR depends entirely upon the RC time constant which is
formed by the biasing resistors, RB1 and RB2 and decoupling
capacitor, C2. As a rule of thumb, the time constant of the RC
biasing network should be 10 times longer than the time constant of
the input coupling network (R
IN
and C
IN
) to ensure satisfactory
CMR.
C
OUT
C
IN
V
IN
R
IN
100 k
C2
RB2
100 k
C1
RB1
100 k
V
CC
1
F
100 nF
R
L
V
OUT
SL01951
Figure 14. Resistor-divider biasing network.
Another way to provide the necessary V
CC
/2 biasing for single
supply operation is to use a zener diode shunt regulator. The
SA58601 and SA58604 provides a zener diode shunt regulator that
is internally connected to the non-inverting input of the AMP1. The
shunt regulator reference voltage versus the cathode current is
shown in Figure 7. The reference voltage of the internal diode is
adjusted by externally adjusting the cathode current. Typically
400
A cathode current provides 2.5 V; values of cathode current
less than 200
A provides a lower reference voltage. For example,
5
A provides typically 1.3 V. The recommended cathode current
range is from 1
A to 10 mA.
SA58601 instrumentation amplifier
Figure 15 is a SA58601 instrumentation amplifier which has few
external parts. The differential gain is expressed as:
V
OUT
(V1
*
V2)
+ *
1
)
R2
R1
)
2 R2
Rg
To achieve minimum gain, R1 = R2; Rg = infinity (open). The
minimum gain is approximately 4 to 5.
At frequencies above the flat response of the amplifier's gain
response, V1 attenuates more than V2. the unequal attenuation
causes the signal to unbalance, which reduces CMR at high
frequencies.
This circuit provides excellent CMR in low voltage, single supply
applications. The SA58601 has a internal shunt regulator that is
used to provide bias to the non-inverting input of AMP1. To set the
reference at 2.5 V, approximately 1 mA of cathode current is
required. For V
CC
of 5 V, the non-inverting input and cathode of the
internal shunt regulator (pin 3) is pulled up to V
CC
. The external
pull-up resistor is determined by the following expression:
R
PU
+
( V
CC
*
V
ref
)
1 mA
where: V
CC
= 5 V
V
ref
= 2.5 V
then R
PU
= 2.5 k
Choose the closest standard value of 2.4 k
.
V
CC
SL01952
AMP2
7
V
OUT
5
R2
R1
1
AMP1
2
3
6
SA58601
R1
Rg
R2
V
IN1
V
IN2
8
R
PU
2.4 k
4
GND
V
CC
5 V
Figure 15. SA58601 instrumentation amplifier.
Philips Semiconductors
Product data
SA58601; SA58604
Dual and quad operational amplifiers
with shunt regulator
2002 Nov 08
9
SA58604 instrumentation amplifier
Figure 16 is an instrumentation amplifier using the SA58604 Quad
Op Amp with Shunt Regulator. This three op amp configuration
provides very high input resistance, matched input resistance, and
good bandwidth. The differential gain is expressed in the following
equation:
V
OUT
(V1
*
V2)
+
1
)
2Rf
Rg
AMP2 and AMP3 are buffer amplifiers that provide high impedance
inputs. Rg is the gain adjust which is common to both amplifiers.
When Rg is open, the gain is 1. The large differential gain with
respect to the common mode gain available from the first stage
buffer amplifiers ensures that the CMRR in the differential amplifier
output stage is greatly improved. AMP4 is used as a difference
amplifier. The differential amplifier output stage is usually used with
low (
2) or unity gain. For unity gain operation, R3 = R4 and are
closely matched within 1% or less tolerance. The resistors should
have low drift with temperature.
The reference voltage, V
ref
may be sourced from AMP1, as detailed
in the biasing section.
SL01954
14
V
OUT
SA58604
13
12
R4
AMP4
V
ref
R4
R3
R3
8
9
10
AMP3
7
5
6
AMP2
Rg
Rg
4
V
CC
V
CC
11
GND
V
IN2
V
IN1
Figure 16. SA58604 instrumentation amplifier.
Comparator circuit
Figure 17 is an application circuit in the which AMP1 is configured
as a comparator. The non-inverting input, IN+ is logic HIGH
(internally connected to V
ref
), and the inverting input, IN is pulled
LOW (to ground), then the the output goes HIGH (V
CC
1.1 V).
Conversely, if the inverting input is pulled HIGH (to V
CC
), then the
output goes LOW (see Table 1).
Table 1. Logic table for AMP1
IN+ (V
ref
)
IN
OUT
V
out
level
H
L
H
V
CC
1.1 V
H
H
L
10 mV
SL01953
AMP2
7
5
1
AMP1
2
3
6
V
ref
2.4 k
4
GND
V
CC
5 V
8
V
OUT
SW1
IN
HIGH
IN
LOW
V
CC
Figure 17. Comparator configuration, AMP1.
Philips Semiconductors
Product data
SA58601; SA58604
Dual and quad operational amplifiers
with shunt regulator
2002 Nov 08
10
PACKING METHOD
SL01305
TAPE DETAIL
COVER TAPE
CARRIER TAPE
REEL
ASSEMBLY
TAPE
GUARD
BAND
BARCODE
LABEL
BOX
Figure 18. Tape and reel packing method.
Philips Semiconductors
Product data
SA58601; SA58604
Dual and quad operational amplifiers
with shunt regulator
2002 Nov 08
11
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
SA58601; SA58604
Dual and quad operational amplifiers
with shunt regulator
2002 Nov 08
12
SO14:
plastic small outline package; 14 leads; body width 3.9 mm; body thickness 1.45 mm
SO14
1.73
0.068
1.45
0.057
0.20
0.008
0.51
0.33
0.020
0.013
8.74
8.53
3.99
3.81
pin 1 index
Philips Semiconductors
Product data
SA58601; SA58604
Dual and quad operational amplifiers
with shunt regulator
2002 Nov 08
13
REVISION HISTORY
Rev
Date
Description
_2
20021108
Product data; second version (9397 750 10676).
Supersedes SA58601_SA58604_1 of 2001 Oct 03 (9397 750 08957).
Engineering Change Notice 8532287 29165 (date: 20021107).
Modifications:
Add "Typical characterization curves" and "Application information" sections.
_1
20011003
Product data; initial version (9397 750 08957).
Engineering Change Notice 8532287 27197 (date: 20011003).
Philips Semiconductors
Product data
SA58601; SA58604
Dual and quad operational amplifiers
with shunt regulator
2002 Nov 08
14
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 10676
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
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