AD623ARZ Analog Devices Inc, AD623ARZ Datasheet

IC AMP INST R-R LP 8SOIC

AD623ARZ

Manufacturer Part Number
AD623ARZ
Description
IC AMP INST R-R LP 8SOIC
Manufacturer
Analog Devices Inc
Type
Low Powerr
Datasheets

Specifications of AD623ARZ

Slew Rate
0.3 V/µs
Amplifier Type
Instrumentation
Number Of Circuits
1
Output Type
Rail-to-Rail
-3db Bandwidth
800kHz
Current - Input Bias
17nA
Voltage - Input Offset
25µV
Current - Supply
375µA
Voltage - Supply, Single/dual (±)
2.7 V ~ 12 V, ± 2.5 V ~ 6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
No. Of Amplifiers
1
Input Offset Voltage
200µV
Gain Db Min
1dB
Gain Db Max
1000dB
Bandwidth
800kHz
Amplifier Output
Single Ended
Cmrr
110dB
Supply Voltage Range
2.7V To
Common Mode Rejection Ratio
110
Current, Input Bias
17 nA
Current, Input Offset
0.25 nA
Current, Supply
550 μA
Impedance, Thermal
155 °C/W
Package Type
SOIC-N
Power Dissipation
650 mW
Temperature, Operating, Range
-40 to +85 °C
Voltage, Gain
1-1000 V/V
Voltage, Input
-4.85 to +3.5 V
Voltage, Input Offset
25 μV
Voltage, Noise
35 nV/sqrt Hz (Input), 50 nV/sqrt Hz (Output)
Voltage, Output Swing
0.01 to 4.5 V
Voltage, Supply
2.7 to 12 V
Rohs Compliant
Yes
Number Of Channels
1
Number Of Elements
1
Power Supply Requirement
Single/Dual
Input Resistance
2000@5VMohm
Input Bias Current
0.025@5VnA
Single Supply Voltage (typ)
3/5/9V
Dual Supply Voltage (typ)
±3/±5V
Power Supply Rejection Ratio
80dB
Rail/rail I/o Type
Rail to Rail Output
Single Supply Voltage (min)
2.7V
Single Supply Voltage (max)
12V
Dual Supply Voltage (min)
±2.5V
Dual Supply Voltage (max)
±6V
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output / Channel
-
Gain Bandwidth Product
-
Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device

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a
PRODUCT DESCRIPTION
The AD623 is an integrated single supply instrumentation am-
plifier that delivers rail-to-rail output swing on a single supply
(+3 V to +12 V supplies). The AD623 offers superior user flex-
ibility by allowing single gain set resistor programming, and
conforming to the 8-lead industry standard pinout configura-
tion. With no external resistor, the AD623 is configured for
unity gain (G = 1) and with an external resistor, the AD623 can
be programmed for gains up to 1,000.
The AD623 holds errors to a minimum by providing superior
AC CMRR that increases with increasing gain. Line noise, as
well as line harmonics, will be rejected since the CMRR re-
mains constant up to 200 Hz. The AD623 has a wide input
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.
FEATURES
Easy to Use
Higher Performance than Discrete Design
Single and Dual Supply Operation
Rail-to-Rail Output Swing
Input Voltage Range Extends 150 mV Below Ground
Low Power, 575 A Max Supply Current
Gain Set with One External Resistor
HIGH ACCURACY DC PERFORMANCE
0.1% Gain Accuracy (G = 1)
0.35% Gain Accuracy (G > 1)
25 ppm Gain Drift (G = 1)
200 V Max Input Offset Voltage (AD623A)
2 V/ C Max Input Offset Drift (AD623A)
100 V Max Input Offset Voltage (AD623B)
1 V/ C Max Input Offset Drift (AD623B)
25 nA Max Input Bias Current
NOISE
35 nV/ Hz RTI Noise @ 1 kHz (G = 1)
EXCELLENT AC SPECIFICATIONS
90 dB Min CMRR (G = 10); 84 dB Min CMRR (G = 5)
800 kHz Bandwidth (G = 1)
20 s Settling Time to 0.01% (G = 10)
APPLICATIONS
Low Power Medical Instrumentation
Transducer Interface
Thermocouple Amplifier
Industrial Process Controls
Difference Amplifier
Low Power Data Acquisition
(Single Supply)
Gain Range 1 (No Resistor) to 1,000
(@ 60 Hz, 1K Source Imbalance)
Single Supply, Rail-to-Rail, Low Cost
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
common-mode range and can amplify signals that have a
common-mode voltage 150 mV below ground. Although the
design of the AD623 has been optimized to operate from a single
supply, the AD623 still provides superior performance when
operated from a dual voltage supply ( 2.5 V to 6.0 V).
Low power consumption (1.5 mW at 3 V), wide supply voltage
range, and rail-to-rail output swing make the AD623 ideal for
battery powered applications. The rail-to-rail output stage maxi-
mizes the dynamic range when operating from low supply volt-
ages. The AD623 replaces discrete instrumentation amplifier
designs and offers superior linearity, temperature stability and
reliability in a minimum of space. Until the AD623, this level of
instrumentation amplifier performance has not been achieved.
120
110
100
90
80
70
60
50
40
30
Figure 1. CMR vs. Frequency, +5 V
1
Instrumentation Amplifier
SOIC (R) and SOIC (RM) Packages
CONNECTION DIAGRAM
10
8-Lead Plastic DIP (N),
R
V
World Wide Web Site: http://www.analog.com
IN
IN
G
S
1
2
3
4
100
AD623
FREQUENCY – Hz
8
7
6
5
1k
© Analog Devices, Inc., 1999
REF
OUTPUT
V
R
S
G
x1000
10k
AD623
x1
x100
x10
S
, 0 V
100k
S

Related parts for AD623ARZ

AD623ARZ Summary of contents

Page 1

FEATURES Easy to Use Higher Performance than Discrete Design Single and Dual Supply Operation Rail-to-Rail Output Swing Input Voltage Range Extends 150 mV Below Ground (Single Supply) Low Power, 575 A Max Supply Current Gain Set with One External ...

Page 2

AD623–SPECIFICATIONS SINGLE SUPPLY (typical @ +25 C Single Supply, V Model Specification Conditions GAIN (100 k/R Gain Range 1 Gain Error OUT 0. 3 > OUT ...

Page 3

DUAL SUPPLIES (typical @ +25 C Dual Supply, V Model Specification Conditions GAIN (100 k/R G Gain Range 1 Gain Error OUT –4 3 > OUT ...

Page 4

AD623–SPECIFICATIONS BOTH DUAL AND SINGLE SUPPLIES Model Specification Conditions NOISE Voltage Noise, 1 kHz Total RTI Noise = Input, Voltage Noise Output, Voltage Noise RTI, 0 1000 ...

Page 5

Typical Characteristics 300 280 260 240 220 200 180 160 140 120 100 –100 –80 –60 –40 –20 INPUT OFFSET VOLTAGE – V Figure 2. Typical Distribution of Input Offset Voltage; Package ...

Page 6

AD623 1600 1400 1200 1000 800 600 400 200 100 105 110 115 120 125 130 CMRR dB Figure 8. Typical Distribution for CMRR ( 100 GAIN = 100 GAIN = ...

Page 7

Figure 14. 0 Current Noise (0.71 pA/Div) RTO RTI Figure 15. 0 RTI Voltage Noise (1 Div = 1 V p-p) 120 110 100 ...

Page 8

AD623 –1 –2 –3 –4 –5 –6 –5 –4 –3 –2 –1 0 COMMON MODE INPUT – Volts Figure 20. Maximum Output Voltage vs. Common Mode 100 ...

Page 9

2 FREQUENCY – kHz Figure 26. Large Signal Response, G 1000 100 GAIN – V/V Figure 27. Settling Time ...

Page 10

AD623 Figure 32. Small Signal Pulse Response 100 pF L Figure 33. Small Signal Pulse Response 10 100 Figure 34. Small Signal ...

Page 11

Figure 38. Gain Nonlinearity (G = –100, 15 ppm/Div) V+ (V+) –0.5 (V+) –1.5 (V+) –1.5 (V–) +0.5 V– 0 0.5 1 OUTPUT CURRENT – mA Figure 39. Output Voltage Swing vs. Output Current THEORY OF OPERATION The AD623 is ...

Page 12

AD623 +V S +2. OUTPUT REF G –2.5V TO –6V – Dual Supply Table I. Required Values of Gain Resistors Desired 1% Std Table Gain Value ...

Page 13

This second low pass network, R1+R2 and C3, has a –3 dB frequency equal to: 1/(2 π (R1+R2) (C3)). Using a C3 value of 0.047 ...

Page 14

AD623 plane. Maximum isolation between analog and digital is achieved by connecting the ground planes back at the supplies. The digi- tal return currents from the ADC, which flow in the analog ground plane will, in general, have a negligible ...

Page 15

Amplifying Signals with Low Common-Mode Voltage Because the common-mode input range of the AD623 extends 0.1 V below ground possible to measure small differential signals which have low, or no, common mode component. Fig- ure 50 shows a ...

Page 16

AD623 Table IV. Maximum Attainable Gain and Resulting Output Swing for Different Input Conditions V V REF Pin CM DIFF 2 100 mV 2 ...

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