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Part: 5962-8964601PA
Category:
Description: 450 V/us, Precision, Current-feedback op Amp
Company: Analog Devices
Datasheet: Download 5962-8964601PA datasheet File size : 354 kB
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a
FEATURES AC PERFORMANCE Small Signal Bandwidth: 80 MHz (A V = 1) Slew Rate: 450 V/ s Full Power Bandwidth: 6.8 MHz at 20 V p-p, F R L = 500 ast Settling: for 10 V Step: 110 ns to 0.01%, 80 ns to 0.1% Differential Gain: <0.01% @ 4.4 MHz Differential Phase: <0.028 @ 4.4 MHz Total Harmonic Distortion (THD): 0.0005% @ 100 kHz Open-Loop Transimpedance: 200 M Input Voltage Noise: 2 nV/Hz DC PERFORMANCE Input Offset Voltage: 75 V max (B Grade) Input Offset Drift: 3.5 V/ C max (B Grade) Quiescent Supply Current: 6.5 mA max APPLICATIONS High Speed DAC Buffers Multiflash ADC Error Amplifiers Flash ADC Buffers Coaxial Cable Drivers High Performance Audio Circuitry Available in Plastic Mini-DIP, Hermetic Cerdip, and Plastic SOIC (A) Package MIL-STD-883B Part Available PRODUCT DESCRIPTION
450 V/ s, Precision, Current-Feedback Op Amp AD846
CONNECTION DIAGRAMS Plastic Mini-DIP (N) Package and Cerdip (Q) Package
SOIC (R) Package
NC 1 NC 2 INPUT 3 NC 4 +INPUT 5 NC 6 +
16 NC 15 NC 14 +VS 13 NC 12 OUTPUT
AD846
11 COMPENSATION TOP VIEW VS 7 (Not to Scale) 10 NC
NC 8
9
NC
NC = NO CONNECT
The AD846 is a monolithic, very high speed operational amplifier offering high performance. Although technically classed as a current-feedback or transimpedance amplifier, it may be used in much the same way as traditional op amps while providing significant performance benefits. Employing Analog Devices' junction isolated complementary bipolar (CB) process, the AD846 achieves true "12-bit" (0.01%) precision on critical ac and dc parameters, a level of performance unmatched by amplifiers fabricated using either the dielectrically isolated (DI) or other bipolar processes. The AD846 offers significant advantages over conventional high speed operational amplifiers. It maintains a nearly constant bandwidth and settling time to 0.01% over a wide range of closed-loop gains. This makes the AD846 ideal for amplifying the residue in multiple-pass analog-to-digital converters. Other advantages include: low input errors and high open-loop t r a n s r e s i s t a n c e (200 M) into a 500 load, ensuring true 12-bit dc accuracy for closed-loop gains from 1 to gains g r e a t e r than 100. This combination of ac and dc perform a n c e makes the AD846 an excellent choice for buffering p r e c i s i o n high speed DACs and flash ADCs. REV. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
The AD846 is available in three performance grades. The AD846A and AD846B are rated over the industrial temperature range of 40°C to +85°C. The AD846S is rated over the full military temperature range of 55°C to +125°C and is available processed to MIL-STD-883B, Rev C. The AD846 is available in two types of 8-lead packages: plastic mini-DIP and hermetic cerdip. The AD846AR-16 is available in the 16-lead SOIC package. "A" and "S" grade chips are also available.
PRODUCT HIGHLIGHTS
1. T h e AD846 achieves settling times of 110 n s to 0.01% f o r gains of 1 to 10, with a 450 V/µs slew rate, while c o n s u m i n g only 5 mA of supply current. 2. For closed-loop gains of 1 to 100, the high speed performance of the AD846 is achieved without sacrificing full 12-bit dc precision. 3. The AD846 is well suited to line driver and video buffer applications where the properties of low distortion and high slew rate are required.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2000
AD846SPECIFICATIONS
Model INPUT OFFSET VOLTAGE1 Initial TMIN TMAX vs. Temperature vs. Supply (PSRR) Initial TMIN TMAX vs. Common Mode (CMRR) Initial T M I N T M A X INPUT BIAS CURRENT3 Input Bias Current Initial TMIN TMAX vs. Temperature vs. Supply Initial T MIN T MAX vs. Common Mode Initial T MIN T MAX +Input Bias Current Initial TMIN TMAX vs. Temperature vs. Supply Initial T MIN T MAX vs. Common Mode Initial T MIN T MAX INPUT CHARACTERISTICS Input Resistance Input +Input Input Capacitance Input +Input INPUT VOLTAGE RANGE Common Mode INPUT VOLTAGE NOISE Input Current Noise Input +Input OPEN LOOP TRANSRESISTANCE Conditions
(@ +25 C and
Min
15 V dc, unless otherwise noted)
Min AD846B Typ Max 25 50 0.8 120 116 120 116 125 120 125 120 75 125 3.5 110 94 110 94 Min AD846S Typ Max 25 100 1 125 116 125 116 200 350 5.5 Units µV µV µV/°C dB dB dB dB
AD846A Typ Max 25 50 0.8 200 350 5
5 V18 V2 VC M = ± 1 0 V 110 110 110 110 125 120 125 120
150 450 6 5 V18 V2 VC M = ± 1 0 V 9 11 5 5 3 4 15 5 V18 V2 VC M = ± 1 0 V 5 5 5 5
450 1200 20 15 20 10 15 15 20 80 15 20 15 15
100 400 6 9 11 3 3 3 4 15 5 5 3 3
250 750 17 10 15 5 7 5 7 45 10 15 10 10
150 450 1000 1500 9 20 9 11 5 5 3 5 15 5 5 5 5 15 25 10 20 15 20 80 15 20 15 20
nA nA n A /° C nA/V nA/V nA/V nA/V µA µA nA/°C nA/V nA/V nA/V nA/V
50 10 2 2 ± 10 F = 1 kHz 1 kHz 1 kHz VO U T = ± 1 0 V RLOAD = 500 TMIN TMAX RLOAD = 500 Short Circuit Open Loop AV = 1 RF = 1k AV = 10 RF = 875 AV = 30 RF = 875 VOUT = 20 V p-p RI = 500 AV = 1 AV = 1 AV = 1 to 0.1% to 0.01% F = 100 kHz 2 20 6 ± 10
50 10 2 2 ± 10 2 20 6
50 10 2 2
k pF pF V n V / H z p A / H z p A / H z M M V mA MHz MHz MHz MHz ns % V/µs ns ns %
2 20 6
100 50 10
200
150 75 10
200
100 50 10
200
OUTPUT CHARACTERISTICS Voltage Current Output Resistance FREQUENCY RESPONSE Small Signal Bandwidth (3 dB) Full Power Bandwidth4 Rise Time Overshoot Slew Rate Settling Time 10 V Step, AV = 1 TOTAL HARMONIC D I S T O R T I O N5
65 16 80 31 15 6.8 110 20 450 80 110 0.0005
65 16 80 31 15 6.8 10 20 450 80 110 0.0005
65 16 80 31 15 6.8 10 20 450 80 110 0.0005
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AD846
Model DIFFERENTIAL GAIN DIFFERENTIAL PHASE POWER SUPPLY Rated Performance Operating Range Quiescent Current TRANSISTOR COUNT Conditions F = 4.4 MHz, RL = 100 F = 4.4 MHz, RL = 100 Min AD846A Typ Max 0.01 0.028 ± 15 5 72 Min AD846B Typ Max 0.01 0.028 ± 15 5 72 Min AD846S Typ Max 0.01 0.028 ± 15 5 72 7 Units % Degrees V V mA
±5 T MI N T MAX
18 6.5
±5
18 6.5
5
18
NOTES 1 Input Offset Voltage Specifications are guaranteed after 5 minutes at T A = +25°C. 2 Test Conditions: +V S = 15 V, V S = 5 V to 18 V and +V S = 5 V to 18 V, VS = 15 V. 3 Bias Current Specifications are guaranteed maximum after 5 minutes at T A = +25°C. 4 FPBW = Slew Rate/2 VPEAK. 5 Total Harmonic Distortion. All min and max specifications are guaranteed. Specifications shown in boldface are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels. Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS 1
ORDERING GUIDE
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 18 V Internal Power Dissipation2 Plastic Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 W Cerdip Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 W Common-Mode Input Voltage, Max Safe . . . . . . . |VS| 3 V Output Short Circuit Duration . . . . . . . . . . . . . . . . Indefinite Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . ± 1 V Continuous Input Current Inverting or Noninverting . . . . . . . . . . . . . . . . . . . . 2.0 mA Storage Temperature Range (Q) . . . . . . . . . 65°C to +150°C Storage Temperature Range (N) . . . . . . . . . 65°C to +125°C Storage Temperature Range (R) . . . . . . . . . 65°C to +125°C Operating Temperature Range AD846A/B . . . . . . . . . . . . . . . . . . . . . . . . 40°C to +85°C AD846S . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to +125°C Lead Temperature Range (Soldering 60 sec) . . . . . . . +300°C ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3500 V
NOTES 1 Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; the functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2 Maximum internal power dissipation is specified so that T J does not exceed +175°C at an ambient temperature of +25°C, derate cerdip (Q) package at 8.7 mW/°C and plastic (N) package at 10 mW/°C. Plastic Package: JA = 100°C/Watt, JC = 33°C/W. Cerdip Package: JA = 110°C/Watt, JC = 30°C/W. SOIC Package: JA = 100°C/Watt, JC = 33°C/W.
Model1 AD846AN AD846BN AD846AQ AD846BQ AD846SQ AD846SQ/883B 5962-8964601PA AD846AR-16 AD846AR-16-REEL
Temperature Range 40°C to +85°C 40°C to +85°C 40°C to +85°C 40°C to +85°C 55°C to +125°C 55°C to +125°C 55°C to +125°C 40°C to +85°C 40°C to +85°C
Package Option2 N-8 N-8 Q-8 Q-8 Q-8 Q-8 Q-8 R-16 R-16
NOTES 1 "A" and "S" grade chips are also available. 2 N = Plastic DIP Package; Q = Cerdip Package, R = SOIC Package
METALIZATION PHOTOGRAPH
Dimensions shown in inches and (mm). Consult factory for latest dimensions.
REV. C
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AD846 Typical Characteristics
Figure 1. Input Voltage Swing vs. Supply
Figure 2. Output Voltage Swing vs. Supply
Figure 3. Quiescent Current vs. Supply Voltage
Figure 4. Quiescent Supply Current vs. Temperature
Figure 5. Output Voltage Swing vs. Resistive Load
Figure 6. Large Signal Frequency Response
Figure 7. Open-Loop Transimpedance vs. Supply
Figure 8. Positive Input Bias Current vs. Common-Mode Voltage
Figure 9. Negative Input Bias Current vs. Common-Mode Voltage
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AD846
Figure 10. Positive Input Bias Current vs. Temperature
Figure 11. Negative Input Bias Current vs. Temperature
Figure 12. Power Supply Rejection vs. Frequency
Figure 13. Common-Mode Rejection vs. Frequency
Figure 14. Input Noise Voltage Spectral Density
Figure 15. Inverting Input Noise Current Spectral Density
Figure 16. Short Circuit Current Limit vs. Temperature
Figure 17. Slew Rate vs. Temperature
Figure 18. Slew Rate vs. Input Error Signal
REV. C
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