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Part: AD526S
Category:
Analog & Mixed-Signal Processing
-> Amplifiers
Description:
Company: Analog Devices
Datasheet: Download AD526S datasheet File size : 845 kB
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Datasheet text preview:
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FEATURES Digitally Programmable Binary Gains from 1 to 16 Two-Chip Cascade Mode Achieves Binary Gain from 1 to 256 Gain Error: 0.01% max, Gain = 1, 2, 4 (C Grade) 0.02% max, Gain = 8, 16 (C Grade) 0.5 ppm/ C Drift Over Temperature Fast Settling Time 10 V Signal Change: 0.01% in 4.5 s (Gain = 16) Gain Change: 0.01% in 5.6 s (Gain = 16) Low Nonlinearity: 0.005% FSR max (J Grade) Excellent DC Accuracy: Offset Voltage: 0.5 mV max (C Grade) Offset Voltage Drift: 3 V/ C (C Grade) TTL Compatible Digital Inputs PRODUCT DESCRIPTION
Software Programmable Gain Amplifier AD526
PIN CONFIGURATION
APPLICATION HIGHLIGHTS
The AD526 is a single-ended, monolithic software programmable gain amplifier (SPGA) that provides gains of 1, 2, 4, 8 and 16. It is complete, including amplifier, resistor network and TTL-compatible latched inputs, and requires no external components. Low gain error and low nonlinearity make the AD526 ideal for precision instrumentation applications requiring programmable gain. The small signal bandwidth is 350 kHz at a gain of 16. In addition, the AD526 provides excellent dc precision. The FETinput stage results in a low bias current of 50 pA. A guaranteed maximum input offset voltage of 0.5 mV max (C grade) and low gain error (0.01%, G = 1, 2, 4, C grade) are accomplished using Analog Devices' laser trimming technology. To provide flexibility to the system designer, the AD526 can be operated in either latched or transparent mode. The force/sense configuration preserves accuracy when the output is connected to remote or low impedance loads. The AD526 is offered in one commercial (0°C to +70°C) grade, J, and three industrial grades, A, B and C, which are specified from 40°C to +85°C. The S grade is specified from 55°C to +125°C. The military version is available processed to MILSTD 883B, Rev C. The J grade is supplied in a 16-pin plastic DIP, and the other grades are offered in a 16-pin hermetic sidebrazed ceramic DIP.
1. Dynamic Range Extension for ADC Systems: A single AD526 in conjunction with a 12-bit ADC can provide 96 dB of dynamic range for ADC systems. 2. Gain Ranging Pre-Amps: The AD526 offers complete digital gain control with precise gains in binary steps from 1 to 16. Additional gains of 32, 64, 128 and 256 are possible by cascading two AD526s.
ORDERING GUIDE
Model AD526JN AD526AD AD526BD AD526CD AD526SD/883B 5962-9089401MEA* Temperature Range Commercial Industrial Industrial Industrial Military Package Description 16-Pin Plastic DIP 16-Pin Cerdip 16-Pin Cerdip 16-Pin Cerdip 16-Pin Cerdip Package Option N-16 D-16 D-16 D-16 D-16
*Refer to official DESC drawing for tested specifications.
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703
AD526SPECIFICATIONS (@ V =
S
15 V, RL = 2 k
and TA = +25 C unless otherwise noted)
AD526B/S Typ Max AD526C Typ
Model GAIN Gain Range (Digitally Programmable) Gain Error Gain = 1 Gain = 2 Gain = 4 Gain = 8 Gain = 16 Gain Error Drift Over Temperature G=1 G=2 G=4 G=8 G = 16 Gain Error (TMIN to TMAX) Gain = 1 Gain = 2 Gain = 4 Gain = 8 Gain = 16 Nonlinearity Gain = 1 Gain = 2 Gain = 4 Gain = 8 Gain = 16 Nonlinearity (TMIN to TMAX) Gain = 1 Gain = 2 Gain = 4 Gain = 8 Gain = 16 VOLTAGE OFFSET, ALL GAINS Input Offset Voltage Input Offset Voltage Drift Over Temperature Input Offset Voltage TMIN to TMAX Input Offset Voltage vs. Supply ( VS ± 1 0 % ) INPUT BIAS CURRENT Over Input Voltage Range ± 10 V ANALOG INPUT CHARACTERISTICS Voltage Range (Linear Operation) Capacitance RATED OUTPUT Voltage Current (VOUT = ± 10 V) Short-Circuit Current DC Output Resistance Load Capacitance (For Stable Operation) NOISE, ALL GAINS Voltage Noise, RTI 0.1 Hz to 10 Hz Voltage Noise Density, RTI f = 10 Hz f = 100 Hz f = 1 kHz f = 10 kHz
Min
AD526J Typ
Max
Min
AD526A Typ Max
Min
Min
Max
Units
1, 2, 4, 8, 16 0.05 0.05 0.10 0.15 0.15
1, 2, 4, 8, 16 0.02 0.03 0.03 0.07 0.07
1, 2, 4, 8, 16 0.01 0.02 0.02 0.04 0.04
1, 2, 4, 8, 16 0.01 0.01 0.01 0.02 0.02 % % % % % ppm/°C ppm/°C ppm/°C ppm/°C ppm/° C % % % % % % FSR % FSR % FSR % FSR % FSR % FSR % FSR % FSR % FSR % FSR mV µV/°C mV dB 50 150 pA
0.5 0.5 0.5 0.5 1.0
2.0 2.0 3.0 5.0 5.0 0.06 0.06 0.12 0.17 0.17 0.005 0.001 0.001 0.001 0.001 0.01 0.001 0.001 0.001 0.001
0.5 0.5 0.5 0.5 1.0
2.0 2.0 3.0 5.0 5.0 0.03 0.04 0.04 0.08 0.08 0.005 0.001 0.001 0.001 0.001 0.01 0.001 0.001 0.001 0.001
0.5 0.5 0.5 0.5 1.0
2.0 2.0 3.0 5.0 5.0 0.02 0.03 0.03 0.05 0.05 0.005 0.001 0.001 0.001 0.001 0.01 0.001 0.001 0.001 0.001
0.5 0.5 0.5 0.5 1.0
2.0 2.0 3.0 5.0 5.0 0.015 0.015 0.015 0.03 0.03 0.0035 0.001 0.001 0.001 0.001 0.007 0.001 0.001 0.001 0.001
0.4 5
1.5 20 2.0
0.25 3
0.7 10 1.0
0.25 3
0.5 10 0.8
0.25 3
0.5 10 0.8
80 50 150
80 50 150
84 50 150
90
10
± 12 5 ± 12 ± 10 30 0.002 700
10
± 12 5 ± 12 ± 10 30 0.002 700
10
± 12 5 ± 12 ± 10 30 0.002 700
10
± 12 5 ± 12 ± 10 30 0.002 700
V pF V mA mA pF
10 15
10 5 15
10 5 15
10 5 15
3 70 60 30 25
3 70 60 30 25
3 70 60 30 25
3 70 60 30 35
µV p-p nV Hz nVHz nV Hz nVHz
2
REV. C
AD526
Model DYNAMIC RESPONSE 3 dB Bandwidth (Small Signal) G=1 G=2 G=4 G=8 G = 16 Signal Settling Time to 0.01% (VOUT = ± 10 V) G=1 G=2 G=4 G=8 G = 16 Full Power Bandwidth G = 1, 2, 4 G = 8, 16 Slew Rate G = 1, 2, 4 G = 8, 16 DIGITAL INPUTS (TMIN to TMAX) Input Current (VH = 5 V) Logic "1" Logic "0" TIMING 1 (VL = 0.2 V, VH = 3.7 V) A0, A1, A2 TC TS TH B TC TS TH TEMPERATURE RANGE Specified Performance Storage POWER SUPPLY Operating Range Positive Supply Current Negative Supply Current PACKAGE OPTIONS Plastic (N-16) Ceramic DIP (D-16) Min AD526J Typ Max Min AD526A Typ Max Min AD526B/S Typ Max Min AD526C Typ Max Units
4.0 2.0 1.5 0.65 0.35 2.1 2.5 2.7 3.6 4.1 0.10 0.35 4 18 6 24 4 18 4 5 5 7 7
4.0 2.0 1.5 0.65 0.35 2.1 2.5 2.7 3.6 4.1 0.10 0.35 6 24 4 18 4 5 5 7 7
4.0 2.0 1.5 0.65 0.35 2.1 2.5 2.7 3.6 4.1 0.10 0.35 6 24 4 18 4 5 5 7 7
4.0 2.0 1.5 0.65 0.35 2.1 2.5 2.7 3.6 4.1 0.10 0.35 6 24 4 5 5 7 7
MHz MHz MHz MHz MHz µs µs µs µs µs MHz MHz V/µs V/µs µA V V
60 2 0
100
140 6 0.8
60 2 0
100
140 6 0.8
60 2 0
100
140 6 0.8
60 2 0
100
140 6 0.8
50 30 30 50 40 10 0 65 4.5 10 10 AD526JN +70 +125 16.5 14 13
50 30 30 50 40 10 40 65 4.5 10 10 +85 +150 16.5 14 13
50 30 30 50 40 10 40/55 65 4.5 10 10
50 30 30 50 40 30 +85/+125 40 +150 65 16.5 14 13 4.5 10 10 +85 +150 16.5 14 13
ns ns ns ns ns ns °C °C V mA mA
AD526AD
AD526BD AD526SD AD526SD/883B
AD526CD
NOTES 1 Refer to Figure 25 for definitions. FSR = Full Scale Range = 20 V. RTI = Referred to Input. Specifications subject to change without notice. Specifications shown in boldface are tested on all production units at final electrical test. All min and max specifications are guaranteed, although only those shown in boldface are tested on all production units.
REV. C
3
AD526Typical Characteristics
4
REV. C
AD526
*For Settling Time Traces, 0.01% = 1/2 Vertical Division
REV. C
5
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