AD526AD Analog Devices Inc, AD526AD Datasheet

IC, PROG GAIN AMPLIFIER, 350KHZ, DIP-16

AD526AD

Manufacturer Part Number
AD526AD
Description
IC, PROG GAIN AMPLIFIER, 350KHZ, DIP-16
Manufacturer
Analog Devices Inc
Datasheets

Specifications of AD526AD

No. Of Amplifiers
1
Bandwidth
350kHz
No. Of Channels
1
Supply Voltage Range
± 4.5V To ± 16V
Amplifier Case Style
DIP
No. Of Pins
16
Operating Temperature Range
-40°C To +85°C
Rohs Status
RoHS non-compliant
Amplifier Type
Programmable Gain
Number Of Circuits
1
Slew Rate
24 V/µs
-3db Bandwidth
4MHz
Current - Input Bias
50pA
Voltage - Input Offset
250µV
Current - Supply
10mA
Current - Output / Channel
10mA
Voltage - Supply, Single/dual (±)
±4.5 V ~ 16.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
16-CDIP (0.300", 7.62mm)
Base Number
526
Rohs Compliant
No
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Output Type
-
Gain Bandwidth Product
-
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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a
PRODUCT DESCRIPTION
The AD526 is a single-ended, monolithic software program-
mable 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 FET-
input 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 MIL-
STD 883B, Rev C. The J grade is supplied in a 16-lead plastic
DIP, and the other grades are offered in a 16-lead hermetic
side-brazed ceramic DIP.
REV. D
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.
FEATURES
Digitally Programmable Binary Gains from 1 to 16
Two-Chip Cascade Mode Achieves Binary Gain from
Gain Error:
Fast Settling Time
Low Nonlinearity:
Excellent DC Accuracy:
TTL-Compatible Digital Inputs
1 to 256
0.01% Max, Gain = 1, 2, 4 (C Grade)
0.02% Max, Gain = 8, 16 (C Grade)
0.5 ppm/ C Drift Over Temperature
10 V Signal Change:
Gain Change:
Offset Voltage: 0.5 mV Max (C Grade)
Offset Voltage Drift: 3 V/ C (C Grade)
0.01% in 4.5 s (Gain = 16)
0.01% in 5.6 s (Gain = 16)
0.005% FSR Max (J Grade)
APPLICATION HIGHLIGHTS
1. Dynamic Range Extension for ADC Systems: A single
2. Gain Ranging Preamps: The AD526 offers complete digital
Model
AD526JN
AD526AD
AD526BD
AD526CD
AD526SD
AD526SD/883B
5962-9089401MEA* Military
*Refer to official DESC drawing for tested specifications.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
AD526 in conjunction with a 12-bit ADC can provide
96 dB of dynamic range for ADC systems.
gain control with precise gains in binary steps from 1 to 16.
Additional gains of 32, 64, 128 and 256 are possible by cas-
cading two AD526s.
ANALOG GND 2
ANALOG GND 1
Software Programmable
V
OUT
DIG GND
PIN CONFIGURATION
SENSE
NULL
NULL
Temperature
Range
Commercial
Industrial
Industrial
Industrial
Military
Military
World Wide Web Site: http://www.analog.com
ORDERING GUIDE
–V
V
IN
S
1
2
3
4
5
6
7
8
(Not to Scale)
TOP VIEW
AD526
Gain Amplifier
Package
Descriptions
16-Lead Plastic DIP N-16
16-Lead Cerdip
16-Lead Cerdip
16-Lead Cerdip
16-Lead Cerdip
16-Lead Cerdip
16-Lead Cerdip
16
15
14
13
12
11
10
© Analog Devices, Inc., 1999
9
A1
A0
CS
CLK
A2
B
+V
V
OUT
S
FORCE
AD526
Package
Options
D-16
D-16
D-16
D-16
D-16
D-16

Related parts for AD526AD

AD526AD Summary of contents

Page 1

... Additional gains of 32, 64, 128 and 256 are possible by cas- cading two AD526s. ORDERING GUIDE Temperature Package Model Range Descriptions AD526JN Commercial 16-Lead Plastic DIP N-16 AD526AD Industrial 16-Lead Cerdip AD526BD Industrial 16-Lead Cerdip AD526CD Industrial 16-Lead Cerdip AD526SD Military 16-Lead Cerdip ...

Page 2

AD526–SPECIFICATIONS Model Min GAIN Gain Range (Digitally Programmable Gain Error Gain = 1 Gain = 2 Gain = 4 Gain = 8 Gain = 16 Gain Error Drift Over Temperature ...

Page 3

... AD526AD AD526BD AD526SD –3– AD526B/S AD526C Typ Max Min Typ Max 4.0 4.0 2.0 2.0 1.5 1.5 0.65 0.65 0.35 0.35 2.1 4 2.1 4 2.5 5 2.5 5 2 ...

Page 4

AD526–Typical Performance Characteristics SUPPLY VOLTAGE – V Figure 1. Output Voltage Swing vs. Supply Voltage 100nA 10nA 1nA 100pA 10pA 1pA ...

Page 5

FREQUENCY – Hz Figure 10. Noise Spectral Density Figure 13. Large Signal Pulse Response and Settling Time Figure 16. Small Signal Pulse Response *For Settling Time ...

Page 6

AD526 Figure 19. Large Signal Pulse Response and Settling Time Figure 22. Small Signal Pulse Response, Gain = 16 100 10k 100k 1M 10M ...

Page 7

Figure 28. Gain Change Settling Time,* Gain Change +15V –15V DATA DYNAMICS 5109 (OR EQUIVALENT FLAT-TOP PULSE GENERATOR) AD526 5. 1.4k 8 715 ...

Page 8

AD526 THEORY OF OPERATION The AD526 is a complete software programmable gain amplifier (SPGA) implemented monolithically with a drift-trimmed BiFET amplifier, a laser wafer trimmed resistor network, JFET analog switches and TTL compatible gain code latches. A particular gain is ...

Page 9

TIMING AND CONTROL Table I. Logic Input Truth Table Gain Code Control Condition CLK ( Gain Previous State ...

Page 10

AD526 GROUNDING AND BYPASSING Proper signal and grounding techniques must be applied in board layout so that specified performance levels of precision data acquisition components, such as the AD526, are not degraded shown in Figure 37, logic and ...

Page 11

OFFSET NULLING Input voltage offset nulling of the AD526 is best accomplished at a gain of 16, since the referred-to-input (RTI) offset is ampli- fied the most at this gain and therefore is most easily trimmed. The resulting trimmed value ...

Page 12

AD526 FLOATING-POINT CONVERSION High resolution converters are used in systems to obtain high accuracy, improve system resolution or increase dynamic range. There are a number of high resolution converters available with throughput rates of 66.6 kHz that can be purchased ...

Page 13

HIGH ACCURACY A/D CONVERTERS Very high accuracy and high resolution floating-point A/D con- verters can be achieved by the incorporation of offset and gain calibration routines. There are two techniques commonly used for calibration, a hardware circuit as shown in ...

Page 14

AD526 16-Lead Plastic DIP Package (N-16) 0.87 (22.1) MAX 16 9 0.25 0.31 (6.25) (7.87 PIN 1 0.035 (0.89) 0.18 0.125 (3.18) (4.57) MIN SEATING 0.018 0.100 0.033 PLANE (0.46) (2.54) (0.84) OUTLINE DIMENSIONS Dimensions shown in inches ...

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