1991 Burr-Brown Corporation
PDS-1129D
Printed in U.S.A. August, 1994
Dual, Wide Bandwidth
OPERATIONAL TRANSCONDUCTANCE AMPLIFIER
FEATURES
q
370MHz BANDWIDTH
q
58mA/ns SLEW RATE
q
HIGH OUTPUT CURRENT:
75mA
q
400Mbit/s DATA RATE
q
VOLTAGE-CONTROLLED CURRENT
SOURCE
q
ENABLE/DISABLE FUNCTION
DESCRIPTION
The OPA2662 is a versatile driver device for ultra
wide-bandwidth systems, including high-resolution
video, RF and IF circuitry, communications and test
equipment. The OPA2662 includes two power volt-
age-controlled current sources, or operational
transconductance amplifiers (OTAs), in a 16-pin DIP
or SOL-16 package and is specified for the extended
industrial temperature range (40
C to +85
C). The
output current is zero-for-zero differential input volt-
age. The OTAs provide a 250MHz large-signal band-
width, a 58mA/ns slew rate, and each current source
delivers up to
75mA output current.
The transconductance of both OTAs can be adjusted
between pin 5 and V
CC
by an external resistor,
allowing bandwidth, quiescent current, harmonic dis-
tortion and gain trade-offs to be optimized. The out-
put current can be set with a degeneration resistor
between the emitter and GND. The current mirror
ratio between the collector and emitter currents is
fixed to three. Switching stages compatible to logic
TTL levels make it possible to turn each OTA sepa-
rately on within 30ns and off within 200ns at full
power.
APPLICATIONS
q
HEAD DRIVE AMPLIFIER FOR ANALOG/
DIGITAL VIDEO TAPES AND DATA RE-
CORDERS
q
LED AND LASER DIODE DRIVER
q
HIGH CURRENT VIDEO BUFFER OR LINE
DRIVER
q
RF OUTPUT STAGE DRIVER
q
HIGH DENSITY DISK DRIVES
OTA Transfer
Characteristics
0.2
0.4
0.6
0.4
0.6
0.8
1
0.8
1
10
20
30
40
50
60
70
20
30
40
50
60
70
I (mA)
V
IN
(V)
I
C
I
E
80
80
OPA2662
International Airport Industrial Park Mailing Address: PO Box 11400, Tucson, AZ 85734 Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 Tel: (520) 746-1111 Twx: 910-952-1111
Internet: http://www.burr-brown.com/ FAXLine: (800) 548-6133 (US/Canada Only) Cable: BBRCORP Telex: 066-6491 FAX: (520) 889-1510 Immediate Product Info: (800) 548-6132
OPA2662
OPA2662
V
CCOUT
+V
CCOUT
(9)
(16)
C
(11,14)
B
(2,7)
E
(10,15)
+1
EN
(3, 6)
1/2 OPA2662
OPA2662
2
SPECIFICATIONS
ELECTRICAL
DC-SPECIFICATIONS
At V
CC
=
5V, R
Q
= 750
, T
A
= +25
C, and configured as noted under "CONDITIONS".
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
OTA INPUT OFFSET VOLTAGE
Initial
R
E
= 50k
, R
C
= 40
12
30
mV
vs Temperature
35
V/
C
vs Supply (tracking)
V
CC
=
4.5V to
5.5V, R
E
= 50k
, R
C
= 1k
27
dB
vs Supply (non-tracking)
V
CC
= +4.5V to +5.5V, R
E
= 50k
, R
C
= 1k
15
dB
vs Supply (non-tracking)
V
CC
= 4.5V to 5.5V, R
E
= 50k
, R
C
= 1k
40
dB
Matching
2
7
mV
OTA B-INPUT BIAS CURRENT
Initial
R
E
= 100
, R
C
= 40
1
1/+5
A
vs Temperature
5
nA/
C
vs Supply (tracking)
V
CC
=
4.5V to
5.5V, R
E
= 50k
, R
C
= 1k
60
nA/V
vs Supply (non-tracking)
V
CC
= +4.5V to +5.5V, R
E
= 50k
, R
C
= 1k
160
nA/V
vs Supply (non-tracking)
V
CC
= 4.5V to 5.5V, R
E
= 50k
, R
C
= 1k
40
nA/V
Matching
0.2
1
A
OTA C-OUTPUT BIAS CURRENT
R
E
= 100
, R
C
= 1k
Initial
0.5
0.5/+1.5
mA
vs Temperature
1.5
A/
C
vs Supply (tracking)
V
CC
=
4.5V to
5.5V
72
A/V
vs Supply (non-tracking)
V
CC
= +4.5V to +5.5V
236
A/V
vs Supply (non-tracking)
V
CC
= 4.5V to 5.5V
92
A/V
Matching
0.06
0.5
mA
B-INPUT IMPEDANCE
Impedance
I
Q
=
17mA
4.5 || 1.5
M
|| pF
OTA INPUT NOISE
Input Noise Voltage Density
f = 20kHz to 100MHz
4.4
nV/
Hz
Output Noise Current Density
0.09
nA/
Hz
Signal-to-Noise Ratio
S/N = 20 log (0.7/V
N
5MHz)
97
dB
OTA C-RATED OUTPUT
Output Voltage Compliance
I
C
=
5mA, R
E
= 100
, R
C
= 1k
3.4
V
Output Current
R
C
= 40
, R
E
= 100
75
mA
V
IN
=
3V
Output Impedance, r
C
I
Q
=
17mA
4.5 || 6.5
k
|| pF
OTA E-RATED OUTPUT
Voltage Output
R
E
= 100
,
R
C
= 40
3.0
V
DC Current Output
R
E
= 100
,
R
C
= 40
V
IN
=
4V
25
mA
Voltage Gain
V
IN
=
2.5V
R
E
= 100
0.86
V/V
R
E
= 50k
0.98
V/V
Output Impedance, r
E
I
Q
=
17mA
16 || 2.2
|| pF
POWER SUPPLY
Rated Voltage
R
E
= 50k
,
R
C
= 1k
4.5
5.5
VDC
Derated Performance
R
E
= 50k
, R
C
= 40
3
6
VDC
Positive Quiescent Current
R
Q
= 750
, R
E
= 50k
, R
C
= 1k
,
+15
+17
+18
mA
for both OTAs
(4)
Both Channels Enabled
Positive Quiescent Current
R
Q
= 750
, R
E
= 50k
, R
C
= 1k
,
+4
mA
for both OTAs
(4)
Both Channels Disabled
Quiescent Current Range
Programmable
R
Q
= 3k
to
30
3
65
mA
TEMPERATURE RANGE
Specification
Ambient Temperature
40
+85
C
Thermal Resistance,
JA
AP
90
C/W
AU
100
C/W
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user's own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
NOTES: (1) Characterization sample. (2) "Typical Values" are Mean values. The average of the two amplifiers is used for amplifier specific parameters. (3) "Min"
and "Max" Values are mean
3 Standard Deviations. Worst case of the two amplifiers (Mean
3 Standard Deviations) is used for amplifier specific parameters. (4)
I
Q
typically 2mA less than I
+
Q
due to OTA C-Output Bias Current and TTL Select Circuit Current.
OPA2662AP, AU
3
OPA2662
SPECIFICATIONS
(CONT)
ELECTRICAL
AC-SPECIFICATION
Typical at V
CC
=
5VDC, R
Q
= 750
, I
C
=
37.5mA (V
IN
= 2.5Vpp, R
E
= 100
), I
C
=
75mA (V
IN
= 2.5Vpp, R
E
= 50
), R
SOURCE
= 50
,
and T
A
= +25
C, unless
otherwise noted.
OPA2662AP, AU
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
FREQUENCY DOMAIN
LARGE SIGNAL BANDWIDTH
I
C
=
37.5mA
R
E
= 100
, R
C
= 50
150
MHz
I
C
=
75mA
R
E
= 100
, R
C
= 25
200
MHz
I
C
=
37.5mA (Optimized)
R
E
= 100
, R
C
= 50
, C
E
= 5.6pF
370
MHz
I
C
=
75mA (Optimized)
R
E
= 100
, R
C
= 25
, C
E
= 5.6pF
250
MHz
GROUP DELAY TIME
R
E
= 100
, R
C
= 50
Measured Input to Output
B to E
1.2
ns
(Demo Board Used)
B to C
2.5
ns
HARMONIC DISTORTION
Second Harmonic
f = 10MHz, I
C
=
37.5mA
31
dBc
Third Harmonic
37
dBc
Second Harmonic
f = 10MHz, I
C
=
75mA
33
dBc
Third Harmonic
32
dBc
Second Harmonic
f = 30MHz, I
C
=
37.5mA
29
dBc
Third Harmonic
32
dBc
Second Harmonic
f = 30MHz, I
C
=
75mA
30
dBc
Third Harmonic
25
dBc
Second Harmonic
f = 50MHz, I
C
=
37.5mA
31
dBc
Third Harmonic
30
dBc
Second Harmonic
f = 50MHz, I
C
=
75mA
28
dBc
Third Harmonic
23
dBc
CROSSTALK
Typical Curve Number 3
I
C
=
37.5mA, f = 30MHz
51
dB
I
C
=
75mA, f = 30MHz
56
dB
FEEDTHROUGH
Off Isolation
R
E
= 100
, f = 30MHz
90
dB
R
E
= 50
, f = 30MHz
90
dB
TIME DOMAIN
Rise Time
10% to 90%
75mA Step I
C
2
ns
150mA Step I
C
2.6
ns
Slew Rate
I
C
= 75mA
37.5
mA/ns
I
C
= 150mA
58
mA/ns
CHANNEL SELECTION
ENABLE INPUTS
Logic 1 Voltage
2
V
CC
+ 0.6
V
Logic 0 Voltage
0
0.8
V
Logic 1 Current
V
SEL
= 2.0V to 5V
0.8
1.1
10
A
Logic 0 Current
V
SEL
= 0V to 0.8V
1
0.05
A
SWITCHING CHARACTERISTICS
I
C
= 150mAp-p, f = 5MHz
EN to Channel ON Time
90% Point of V
O
= 1Vp-p
30
ns
EN to Channel OFF Time
10% Point of V
O
= 1Vp-p
200
ns
Switching Transient, Positive
(Measured While Switching
30
mV
Switching Transient, Negative
Between the Grounded Channels)
80
mV
OPA2662AP, AU
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
OPA2662
4
ELECTRICAL (Full Temperature Range 40
C to +85
C)
At V
CC
=
5VDC, R
Q
= 750
, T
A
= T
MIN
to T
MAX
, unless otherwise noted, and configured as noted under "CONDITIONS".
OTA INPUT OFFSET VOLTAGE
R
E
= 50k
,
R
C
= 40
Initial
12
36
mV
Matching
2
7.2
mV
OTA INPUT BIAS CURRENT
R
E
= 100
,
R
C
= 40
Initial
1.9
1
5.9
A
Matching
1.2
0.2
1.2
A
OTA TRANSCONDUCTANCE
Transconductance
I
C
= 75mA, R
E
= 0
580
610
mA/V
OTA C-RATED OUTPUT
Output Voltage Compliance
I
C
=
5mA, R
E
= 100
,
R
C
= 16
3.2
V
POWER SUPPLY
Positive Quiescent Current for both OTAs
(4)
R
Q
= 750
, R
E
= 50k
, R
C
= 1k
,
+8
+17
+25
mA
Both Channels Selected
OPA2662AP, AU
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SPECIFICATIONS
(CONT)
PIN CONFIGURATION
Power Supply Voltage ........................................................................
6V
Input Voltage
(1)
..................................................................
V
CC
to
0.7V
Operating Temperature ................................................... 40
C to +85
C
Storage Temperature ..................................................... 40
C to +125
C
Junction Temperature .................................................................... +175
C
Lead Temperature (soldering, 10s) ............................................... +300
C
Digital Input Voltages (EN
1
, EN
2
) ............................... 0.5 to +V
CC
+0.7V
ABSOLUTE MAXIMUM RATINGS
NOTE: (1) Inputs are internally diode-clamped to
V
CC
.
Top View
SOL-16/DIP
PACKAGE
DRAWING
TEMPERATURE
PRODUCT
PACKAGE
NUMBER
(1)
RANGE
OPA2662AP
16-Pin Plastic DIP
180
40
C to +85
C
OPA2662AU
SOL-16 Surface Mount
211
40
C to +85
C
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.
PACKAGE/ORDERING INFORMATION
ELECTROSTATIC
DISCHARGE SENSITIVITY
Any integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with ap-
propriate precautions. ESD can cause damage ranging from
subtle performance degradation to complete device failure.
Precision integrated circuits may be more susceptible to
damage because very small parametric changes could cause
the device not to meet published specifications.
Burr-Brown's standard ESD test method consists of five
1000V positive and negative discharges (100pF in series with
1.5k
) applied to each pin.
+V
CC
B
1
EN1
GND
I
Q
Adjust
EN2
B
2
V
CC
+V
CCOUT
E
1
C
1
NC
NC
C
2
E
2
V
CCOUT
OTA1
OPA2662
OTA2
Logic
PTAT
Supply
Logic
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
5
OPA2662
OTA B-INPUT BIAS CURRENT vs TEMPERATURE
Temperature (C)
50
25
0
25
50
75
100
B-Input Bias Current (A)
1.5
1.3
1.1
0.9
0.7
OTA C-OUTPUT BIAS CURRENT vs TEMPERAURE
Temperature (C)
0.70
0.65
0.60
0.55
0.50
0.45
0.40
0.35
0.30
50
25
0
25
50
75
100
Output Bias Current (mA)
OTA B-INPUT RESISTANCE
vs TOTAL QUIESCENT CURRENT
Total Quiescent Current, I
Q
(mA)
18
16
14
12
10
8
6
4
2
0
OTA B-Input Resistance (M
)
7
12
17
22
27
32
37
42
47
OTA B TO E-INPUT OFFSET VOLTAGE
vs TEMPERATURE
Temperature (C)
15
14
13
12
11
10
9
8
Input Offset Voltage (mV)
50
25
0
25
50
75
100
R
E
= 50k
R
C
= 40
TYPICAL PERFORMANCE CURVES
At V
CC
=
5V, R
Q
= 750
, and T
A
= +25
C, unless otherwise specified.
OTA E-OUTPUT RESISTANCE
vs TOTAL QUIESCENT CURRENT
Total Quiescent Current, I
Q
(mA)
50
45
40
35
30
25
20
15
10
5
0
7
47
OTA E-Output Resistance r
E
(
)
32
12
17
22
27
37
42
OTA C-OUTPUT RESISTANCE
vs TOTAL QUIESCENT CURRENT
Total Quiescent Current, I
Q
(mA)
9
8
7
6
5
4
3
2
1
0
OTA C-Output Resistance, r
C
(k
)
7
12
17
22
27
32
37
42
47
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