Burr Brown OPA689P, OPA689U-2K5, OPA689U Datasheet
1
®
OPA689
©
1997 Burr-Brown Corporation PDS-1409D Printed in U.S.A. January, 2000
OPA689
®
Wideband, High Gain
VOLTAGE LIMITING AMPLIFIER
FEATURES
● HIGH LINEARITY NEAR LIMITING
● FAST RECOVERY FROM OVERDRIVE: 2.4ns
● LIMITING VOLTAGE ACCURACY: ±15mV
● –3dB BANDWIDTH (G = +6): 280MHz
● STABLE FOR G ≥ +4
● SLEW RATE: 1600V/µs
● ±5V AND +5V SUPPLY OPERATION
● LOW GAIN VERSION: OPA688
OPA689
OPA689
APPLICATIONS
● TRANSIMPEDANCE WITH FAST
OVERDRIVE RECOVERY
● FAST LIMITING ADC INPUT DRIVER
● LOW PROP DELAY COMPARATOR
● NON-LINEAR ANALOG SIGNAL
PROCESSING
● DIFFERENCE AMPLIFIER
● IF LIMITING AMPLIFIER
● AM SIGNAL GENERATION
DESCRIPTION
The OPA689 is a wideband, voltage feedback op amp
that offers bipolar output voltage limiting, and is stable
for gains ≥ +4. Two buffered limiting voltages take
control of the output when it attempts to drive beyond
these limits. This new output limiting architecture holds
the limiter offset error to ±15mV. The op amp operates
linearly to within 30mV of the limits.
The combination of narrow nonlinear range and low
limiting offset allows the limiting voltages to be set within
100mV of the desired linear output range. A fast 2.4ns
recovery from limiting ensures that overdrive signals will
be transparent to the signal channel. Implementing the
limiting function at the output, as opposed to the input,
gives the specified limiting accuracy for any gain, and
allows the OPA689 to be used in all standard op amp
applications.
Non-linear analog signal processing circuits will benefit
from the OPA689’s sharp transition from linear operation
to output limiting. The quick recovery time supports high
speed applications.
The OPA689 is available in an industry-standard pinout
in PDIP-8 and SO-8 packages. For lower gain applications requiring output limiting with fast recovery, consider the OPA688.
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
LIMITED OUTPUT RESPONSE
V
IN
V
O
Time (200ns/div)
Input and Output Voltage (V)
G = +6
V
H
= 2.0V
V
L
= –2.0V
2.10
2.05
2.00
1.95
1.90
1.85
1.80
1.75
1.70
1.65
1.60
DETAIL OF LIMITED OUTPUT VOLTAGE
Time (50ns/div)
V
O
Input and Output Voltage (V)
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/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
For most current data sheet and other product
information, visit www.burr-brown.com
2
®
OPA689
AC PERFORMANCE (see Fig. 1)
Small Signal Bandwidth V
O
< 0.5Vp-p
G = +6 280 220 210 200 MHz Min B
G = +12 90 — — — MHz Typ C
G = –6 220 — — — MHz Typ C
Gain Bandwidth Product (G ≥ +20) V
O
< 0.5Vp-p 720 490 460 430 MHz Min B
Gain Peaking V
O
< 0.5Vp-p, G = +4 8 — — — dB Typ C
0.1dB Gain Flatness Bandwidth V
O
< 0.5Vp-p 110 — — — MHz Typ C
Large Signal Bandwidth V
O
= 2Vp-p 290 185 175 170 MHz Min B
Step Response
Slew Rate 2V Step 1600 1300 1250 950 V/µs Min B
Rise/Fall Time 0.5V Step 1.2 1.8 1.9 2.4 ns Max B
Settling Time: 0.05% 2V Step 7 ———nsTypC
Spurious Free Dynamic Range f = 5MHz, V
O
= 2Vp-p 61 57 53 48 dB Min B
Differential Gain NTSC, PAL, R
L
= 500Ω 0.02 — — — % Typ C
Differential Phase NTSC, PAL, R
L
= 500Ω 0.01 — — — ° Typ C
Input Noise Density
Voltage Noise f ≥ 1MHz 4.6 5.3 6.0 6.1 nV/√Hz Max B
Current Noise f ≥ 1MHz 2.0 2.5 2.9 3.6 pA/√Hz Max B
DC PERFORMANCE (V
CM
= 0V)
Open-Loop Voltage Gain (A
OL
)V
O
= ±0.5V 56 50 48 47 dB Min A
Input Offset Voltage ±1
±5 ±6 ±7 mV Max A
Average Drift ——±14 ±14 µV/°C Max B
Input Bias Current
(3)
+8 ±12 ±13 ±20 µA Max A
Average Drift — — –60 –90 nA/°C Max B
Input Offset Current ±0.3
±2 ±3 ±4 µA Max A
Average Drift ——±10 ±10 nA/°C Max B
INPUT
Common-Mode Rejection Ratio Input Referred, V
CM
= ±0.5V 60 53 52 50 dB Min A
Common-Mode Input Range
(4)
±3.3 ±3.2 ±3.2 ±3.1 V Min A
Input Impedance
Differential-Mode 0.4 || 1 — — — MΩ || pF Typ C
Common-Mode 1 || 1 — — — MΩ || pF Typ C
OUTPUT V
H
= –VL = 4.3V
Output Voltage Range R
L
≥ 500Ω±4.1 ±3.9 ±3.9 ±3.8 V Min A
Current Output, Sourcing 105 90 85 80 mA Min A
Sinking –85 –70 –65 –60 mA Min A
Closed-Loop Output Impedance G = +4, f < 100kHz 0.8 — — — Ω Typ C
POWER SUPPLY
Operating Voltage, Specified ±5———VTypC
Maximum —
±6 ±6 ±6 V Max A
Quiescent Current, Maximum 15.8 17 19 20 mA Max A
Minimum 15.8 14 12.8 11 mA Min A
Power Supply Rejection Ratio +V
S
= 4.5V to 5.5V
+PSR (Input Referred) 65 58 57 55 dB Min A
OUTPUT VOLTAGE LIMITERS
Default Limit Voltage Limiter Pins Open ±3.3
±3.0 ±3.0 ±2.9 V Min A
Minimum Limiter Separation (V
H
– VL) 200 200 200 200 mV Min B
Maximum Limit Voltage — ±4.3 ±4.3 ±4.3 V Max B
Limiter Input Bias Current Magnitude
(5)
VO = 0
Maximum 54 65 68 70 µA Max A
Minimum 54 35 34 31 µA Min A
Average Drift — — 40 45 nA/°C Max B
Limiter Input Impedance 2 || 1 — — — MΩ || pF Typ C
Limiter Feedthrough
(6)
f = 5MHz –60 — — — dB Typ C
DC Performance in Limit Mode V
IN
= ±0.7V
Limiter Offset Voltage (V
O
– VH) or (VO – VL) ±15 ±35 ±40 ±40 mV Max A
Op Amp Input Bias Current Shift
(3)
3———µA Typ C
OPA689U, P
TYP GUARANTEED
(1)
0°C to –40°C to
MIN/
TEST
PARAMETER CONDITIONS +25°C +25°C +70°C +85°C UNITS MAX
LEVEL
(2)
SPECIFICATIONS —VS = ±5V
G = +6, RL = 500Ω, RF = 750Ω, VH = –VL = 2V, (Figure 1 for AC performance only), unless otherwise noted.
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OPA689
OUTPUT VOLTAGE LIMITERS (CONT)
AC Performance in Limit Mode
Limiter Small Signal Bandwidth V
IN
= ±0.7V, VO < 0.02Vp-p 450 — — — MHz Typ C
Limiter Slew Rate
(7)
100 — — — V/µs Typ C
Limited Step Response
Overshoot V
IN
= 0 to ±0.7V Step 250 — — — mV Typ C
Recovery Time V
IN
= ±0.7V to 0 Step 2.4 2.8 3.0 3.2 ns Max B
Linearity Guardband
(8)
f = 5MHz, VO = 2Vp-p 30 — — — mV Typ C
THERMAL CHARACTERISTICS
Temperature Range Specification: P, U
–40 to +85
———°C Typ C
Thermal Resistance
P 8-Pin DIP 100 — — — °C/W Typ C
U 8-Pin SO-8 125 — — — °C/W Typ C
NOTES: (1) Junction Temperature = Ambient Temperature for low temperature limit and 25°C guaranteed specifications. Junction Temperature = Ambient Temperature
+ 23°C at high temperature limit guaranteed specifications. (2) TEST LEVELS: (A) 100% tested at 25°C. Over temperature limits by characterization and simulation.
(B) Limits set by characterization and simulation. (C) Typical value for information only. (3) Current is considered positive out of node. (4) CMIR tested as < 3dB
degradation from minimum CMRR at specified limits. (5) I
VH
(VH bias current) is positive, and IVL (VL bias current) is negative, under these conditions. See Note 3 and
Figures 1 and 7. (6) Limiter feedthrough is the ratio of the output magnitude to the sinewave added to V
H
(or VL) when VIN = 0. (7) VH slew rate conditions are: V
IN
= +0.7V, G = +6, VL = –2V, VH = step between 2V and 0V. VL slew rate conditions are similar. (8) Linearity Guardband is defined for an output sinusoid (f = 1MHz,
V
O
= 2Vpp) centered between the limiter levels (VH and VL). It is the difference between the limiter level and the peak output voltage where SFDR decreases by 3dB
(see Figure 8).
OPA689U, P
TYP GUARANTEED
(1)
0°C to –40°C to
MIN/
TEST
PARAMETER CONDITIONS +25°C +25°C +70°C +85°C UNITS MAX
LEVEL
(2)
SPECIFICATIONS —VS = ±5V (cont.)
G = +6, RL = 500Ω, RF = 750Ω, VH = –VL = 2V, (Figure 1 for AC performance only), unless otherwise noted.
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.
4
®
OPA689
AC PERFORMANCE (see Fig. 2)
Small Signal Bandwidth V
O
< 0.5Vp-p
G = +6 210 180 160 150 MHz Min B
G = +12 70 — — — MHz Typ C
G = –6 180 — — — MHz Typ C
Gain Bandwidth Product (G ≥ +20) V
O
< 0.5Vp-p 440 330 310 300 MHz Min B
Gain Peaking V
O
< 0.5Vp-p, G = +4 4 — — — dB Typ B
0.1dB Gain Flatness Bandwidth V
O
< 0.5Vp-p 35 — — — MHz Typ C
Large Signal Bandwidth V
O
= 2Vp-p 175 150 140 125 MHz Min B
Step Response
Slew Rate 2V Step 1600 1300 1250 950 V/µs Min B
Rise/Fall Time 0.5V Step 1.9 2.1 2.2 2.6 ns Max B
Settling Time: 0.05% 2V Step 7 ———nsTypC
Spurious Free Dynamic Range f = 5MHz, V
O
= 2Vp-p 59 55 51 46 dB Min B
Input Noise
Voltage Noise Density f ≥ 1MHz 4.6 5.3 6.0 6.1 nV/√Hz Max B
Current Noise Density f ≥ 1MHz 2.0 2.5 2.9 3.6 pA/√Hz Max B
DC PERFORMANCE
Open-Loop Voltage Gain (A
OL
)V
O
= ±0.5V 56 50 48 47 dB Min A
Input Offset Voltage ±1
±5 ±6 ±8 mV Max A
Average Drift ——±14 ±14 µV/°C Max B
Input Bias Current
(3)
+8 ±12 ±13 ±20 µA Max A
Average Drift — — –60 –90 nA/°C Max B
Input Offset Current ±0.3
±2 ±3 ±4 µA Max A
Average Drift ——±10 ±10 nA/°C Max B
INPUT
Common-Mode Rejection Ratio Input Referred, V
CM
±0.5V 58 51 50 48 dB Min A
Common-Mode Input Range
(4)
V
CM
±0.8 V
CM
±0.7 V
CM
±0.7 V
CM
±0.6 V Min A
Input Impedance
Differential-Mode 0.4 || 1 — — — MΩ || pF Typ C
Common-Mode 1 || 1 — — — MΩ || pF Typ C
OUTPUT V
H
= VCM + 1.8V, VL = VCM – 1.8V
Output Voltage Range R
L
≥ 500Ω V
CM
±1.6 V
CM
±1.4 V
CM
±1.4 V
CM
±1.3 V Min A
Current Output, Sourcing 70 60 55 50 mA Min A
Sinking –60 –50 –45 –40 mA Min A
Closed-Loop Output Impedance G = +4, f < 100kHz 0.8 — — — Ω Typ C
POWER SUPPLY
Operating Voltage, Specified 5 — — — V Typ C
Maximum — 12 12 12 V Max A
Quiescent Current, Maximum 13 15 15 16 mA Max A
Minimum 13 11 10 9 mA Min A
Power Supply Rejection Ratio V
S
= 4.5V to 5.5V
+PSR (Input Referred) 65 — — — dB Typ C
OUTPUT VOLTAGE LIMITERS
Default Limiter Voltage Limiter Pins Open V
CM
±0.9 V
CM
±0.6 V
CM
±0.6 V
CM
±0.6 V Min A
Minimum Limiter Separation (V
H
– VL) 200 200 200 200 mV Min B
Maximum Limit Voltage — V
CM
±1.8 V
CM
±1.8 V
CM
±1.8 V Max B
Limiter Input Bias Current Magnitude
(5)
VO = 2.5V
Maximum 35 65 75 85 µA Max A
Minimum 35 0 00µA Min A
Average Drift — — 30 50 nA/°C Max B
Limiter Input Impedance 2 || 1 — — — MΩ || pF Typ C
Limiter Isolation
(6)
f = 5MHz –60 — — — dB Typ C
DC Performance in Limit Mode V
IN
= VCM ±0.4V
Limiter Voltage Accuracy (V
O
– VH) or (VO – VL) ±15 ±35 ±40 ±40 mV Max A
Op Amp Bias Current Shift
(3)
5———µA Typ C
AC Performance in Limit Mode
Limiter Small Signal Bandwidth V
IN
= ±0.4V, VO < 0.02Vp-p 300 — — — MHz Typ C
Limiter Slew Rate
(7)
20———V/µs Typ C
Limited Step Response
Overshoot V
IN
= VCM to VCM ±0.4V Step 55 — — — mV Typ C
Recovery Time V
IN
= VCM ±0.4V to VCM Step 15 ———nsTypC
Linearity Guardband
(8)
f = 5MHz, VO = 2Vp-p 30 — — — mV Typ C
OPA689U, P
TYP GUARANTEED
(1)
0°C to –40°C to
MIN/
TEST
PARAMETER CONDITIONS +25°C +25°C +70°C +85°C UNITS MAX
LEVEL
(2)
SPECIFICATIONS —VS = +5V
G = +6, RF = 750Ω, RL = 500Ω tied to V
CM
= 2.5V, VL = V
CM
–1.2V, VH = V
CM
+1.2V, (Figure 2 for AC performance only), unless otherwise noted.
5
®
OPA689
THERMAL CHARACTERISTICS
Temperature Range Specification: P, U
–40 to +85
———°C Typ C
Thermal Resistance
P 8-Pin DIP 100 — — — °C/W Typ C
U 8-Pin SO-8 125 — — — °C/W Typ C
NOTES: (1) Junction Temperature = Ambient Temperature for low temperature limit and 25°C guaranteed specifications. Junction Temperature = Ambient Temperature
+ 23°C at high temperature limit guaranteed specifications. (2) TEST LEVELS: (A) 100% tested at 25°C. Over temperature limits by characterization and simulation.
(B) Limits set by characterization and simulation. (C) Typical value for information only. (3) Current is considered positive out of node. (4) CMIR tested as < 3dB
degradation from minimum CMRR at specified limits. (5) I
VH
(VH bias current) is negative, and IVL (VL bias current) is positive, under these conditions. See Note 3 and
Figures 2 and 7. (6) Limiter feedthrough is the ratio of the output magnitude to the sinewave added to V
H
(or VL) when VIN = 0. (7) VH slew rate conditions are: V
IN
= V
CM
+0.4V, G = +6, VL = V
CM
–1.2V, VH = step between VCM +1.2V and VCM. VL slew rate conditions are similar. (8) Linearity Guardband is defined for an output
sinusoid (f = 5MHz, V
O
= V
CM
±1Vp-p) centered between the limiter levels (VH and VL). It is the difference between the limiter level and the peak output voltage where
SFDR decreases by 3dB (see Figure 8).
OPA689U, P
TYP GUARANTEED
(1)
0°C to –40°C to
MIN/
TEST
PARAMETER CONDITIONS +25°C +25°C +70°C +85°C UNITS MAX
LEVEL
(2)
SPECIFICATIONS —VS = +5V (cont.)
G = +6, RF = 750Ω, RL = 500Ω tied to V
CM
= 2.5V, VL = V
CM
–1.2V, VH = V
CM
+1.2V, (Figure 2 for AC performance only), unless otherwise noted.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range 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 its published
specifications.
Supply Voltage .................................................................................±6.5V
Internal Power Dissipation ........................... See Thermal Characteristics
Input Voltage Range ............................................................................ ±V
S
Differential Input Voltage ..................................................................... ±V
S
Limiter Voltage Range........................................................... ±(VS – 0.7V)
Storage Temperature Range: P, U ................................–40°C to +125°C
Lead Temperature (DIP, soldering, 10s) ...................................... +300°C
(SO-8, soldering, 3s) ...................................... +260°C
Junction Temperature .................................................................... +175°C
ABSOLUTE MAXIMUM RATINGS
ABSOLUTE MAXIMUM RATINGS
Top View DIP-8, SO-8
1
2
3
4
8
7
6
5
NC
Inverting Input
Non-Inverting Input
–V
S
V
H
+V
S
Output
V
L
PACKAGE/ORDERING INFORMATION
PACKAGE SPECIFIED
DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT
PRODUCT PACKAGE NUMBER RANGE MARKING NUMBER
(1)
MEDIA
OPA689P DIP-8 006 –40°C to +85°C OPA689P OPA689P Rails
OPA689U SO-8 Surface Mount 182 –40°C to +85°C OPA689U OPA689U Rails
"""""OPA689U/2K5 Tape and Reel
NOTES: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces
of “OPA689U/2K5” will get a single 2500-piece Tape and Reel.
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