AD621ARZ-RL Analog Devices Inc, AD621ARZ-RL Datasheet

no-image

AD621ARZ-RL

Manufacturer Part Number
AD621ARZ-RL
Description
IC,Instrumentation Amplifier,SINGLE,BIPOLAR,SOP,8PIN,PLASTIC
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD621ARZ-RL

Amplifier Type
Instrumentation
Number Of Circuits
1
Slew Rate
1.2 V/µs
-3db Bandwidth
800kHz
Current - Input Bias
500pA
Voltage - Input Offset
75µV
Current - Supply
900µA
Current - Output / Channel
18mA
Voltage - Supply, Single/dual (±)
±2.3 V ~ 18 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Output Type
-
Gain Bandwidth Product
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
a
PRODUCT DESCRIPTION
The AD621 is an easy to use, low cost, low power, high accu-
racy instrumentation amplifier that is ideally suited for a wide
range of applications. Its unique combination of high perfor-
mance, small size and low power, outperforms discrete in amp
implementations. High functionality, low gain errors, and low
30,000
25,000
20,000
15,000
10,000
5,000
√Hz
0
0
AD621A
5
SUPPLY CURRENT – mA
10
15
3 OP AMP
IN AMP
(3 OP 07
S
)
20
gain drift errors are achieved by the use of internal gain setting
resistors. Fixed gains of 10 and 100 can easily be set via external
pin strapping. The AD621 is fully specified as a total system,
therefore, simplifying the design process.
For portable or remote applications, where power dissipation,
size, and weight are critical, the AD621 features a very low
supply current of 1.3 mA max and is packaged in a compact
8-lead SOIC, 8-lead plastic DIP or 8-lead cerdip. The AD621
also excels in applications requiring high total accuracy, such
as precision data acquisition systems used in weigh scales and
transducer interface circuits. Low maximum error specifications
including nonlinearity of 10 ppm, gain drift of 5 ppm/°C, 50 µV
offset voltage, and 0.6 µV/°C offset drift (“B” grade), make
possible total system performance at a lower cost than has been
previously achieved with discrete designs or with other mono-
lithic instrumentation amplifiers.
When operating from high source impedances, as in ECG and
blood pressure monitors, the AD621 features the ideal combina-
tion of low noise and low input bias currents. Voltage noise is
specified as 9 nV/√Hz at 1 kHz and 0.28 µV p-p from 0.1 Hz to
10 Hz. Input current noise is also extremely low at 0.1 pA/√Hz.
The AD621 outperforms FET input devices with an input bias
current specification of 1.5 nA max over the full industrial tem-
perature range.
10,000
1,000
100
0.1
10
8-Lead Plastic Mini-DIP (N), Cerdip (Q)
1
1k
Instrumentation Amplifier
G = 10/100
CONNECTION DIAGRAM
TYPICAL STANDARD
BIPOLAR INPUT
IN AMP
and SOIC (R) Packages
–V
10k
+IN
–IN
Low Drift, Low Power
S
1
2
3
4
SOURCE RESISTANCE –
(Not to Scale)
TOP VIEW
AD621
100k
8
7
6
5
1M
G = 10/100
OUTPUT
REF
+V
S
AD621 SUPER ETA
BIPOLAR INPUT
IN AMP
AD621
10M
100M

Related parts for AD621ARZ-RL

AD621ARZ-RL Summary of contents

Page 1

PRODUCT DESCRIPTION The AD621 is an easy to use, low cost, low power, high accu- racy instrumentation amplifier that is ideally suited for a wide range of applications. Its unique combination of high perfor- mance, small size and ...

Page 2

AD621–SPECIFICATIONS Gain = 10 (Typical @ Model Conditions GAIN = ± Gain Error V OUT Nonlinearity – + kΩ OUT L Gain vs. Temperature TOTAL ...

Page 3

Gain = 100 (Typical @ Model Conditions GAIN = ± Gain Error V OUT Nonlinearity – + kΩ OUT L Gain vs. Temperature TOTAL VOLTAGE ...

Page 4

AD621 1 ABSOLUTE MAXIMUM RATINGS Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± ...

Page 5

SAMPLE SIZE = –200 –100 0 +100 INPUT OFFSET VOLTAGE – SAMPLE SIZE = –80 –40 0 +40 INPUT OFFSET VOLTAGE – SAMPLE ...

Page 6

AD621 1000 100 FREQUENCY – Hz TIME – 1 sec/div TIME – 1 sec/div 100 100 1000 100,000 10,000 1000 100 10 160 140 120 100 0.1 100mV 1s ...

Page 7

G = 100 140 120 100 0 100 1k 10k FREQUENCY – Hz 180 160 G = 100 140 120 100 0.1 ...

Page 8

AD621 15V 100 LOAD RESISTANCE – 5V 1mV 100 20mV 100 Ω 100 10k 10 s 100 90 10 ...

Page 9

TO 0.01 OUTPUT STEP SIZE – Volts 2.0 1 1.0 0.5 – –0.5 –1.0 –1.5 –2.0 –125 –75 – TEMPERATURE – C 0PW 0 VZR ...

Page 10

AD621 + – – 25k R2 25k R3 400 R5 – 5555 555 100 G = 100 ...

Page 11

Pressure Measurement Although useful in many bridge applications such as weigh-scales, the AD621 is especially suited for higher resistance pressure sensors powered at lower voltages where small size and low power become more even ...

Page 12

AD621 INPUT A: + 10V CM V DIFF 0.5V – COM 10V– INPUT OFFSET V DIFF (1.25V + 1V) – ± The AD621, as well as many other monolithic instrumentation amplifiers, is based on the ...

Page 13

Precision V-I Converter The AD621 along with another op amp and two resistors make a precision current source (Figure 9). The op amp buffers the reference terminal to maintain good CMR. The output voltage V of the AD621 appears across ...

Page 14

AD621 Gain Selection The AD621 has accurate, low temperature coefficient (TC), gains of 10 and 100 available. The gain of the AD621 is nomi- nally set at 10; this is easily changed to a gain of 100 by simply connecting ...

Page 15

GROUNDING Since the AD621 output voltage is developed with respect to the potential on the reference terminal, it can solve many ground- ing problems by simply tying the REF pin to the appropriate “local ground.” In order to isolate low ...

Page 16

AD621 SEATING PLANE 0.010 (0.25) 0.004 (0.10) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). Plastic DIP (N-8) Package 8 5 0.25 0.31 (6.35) (7.87 0.39 (9.91) MAX 0.035 0.01 (0.89 0.25) 0.165 0.01 (4.19 0.25) 0.125 (3.18) ...

Related keywords