AD620 Fast Delivery |IC PHOENIX CO.,LIMITED

AD620 ,Low Drift, Low Power Instrumentation Amp With Set Gains of 1 to 1000FEATURESEASY TO USE8-Lead Plastic Mini-DIP (N), Cerdip (Q)Gain Set with One External Resistorand SO ..
AD620 ,Low Drift, Low Power Instrumentation Amp With Set Gains of 1 to 1000SPECIFICATIONS(Typical @ +258C, V = 615 V, and R = 2 kV, unless otherwise noted)S L1 AD620A AD620B ..
AD620 ,Low Drift, Low Power Instrumentation Amp With Set Gains of 1 to 1000applications with its settling time of 15 μs toThe AD620 is a low cost, high accuracy instrumentati ..
AD620AN ,Low Cost, Low Power Instrumentation AmplifierFEATURESEASY TO USE8-Lead Plastic Mini-DIP (N), Cerdip (Q)Gain Set with One External Resistorand SO ..
AD620AR ,Low Cost, Low Power Instrumentation AmplifierSPECIFICATIONSnonlinearity, low offset voltage of 50 μV max and offset drift of120 kHz Bandwidth (G ..
AD620AR. ,Low Cost, Low Power Instrumentation AmplifierSPECIFICATIONSnonlinearity, low offset voltage of 50 μV max and offset drift of120 kHz Bandwidth (G ..
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AD620
Low Drift, Low Power Instrumentation Amp With Set Gains of 1 to 1000
CONNECTION DIAGRAM
8-Lead Plastic Mini-DIP (N), Cerdip (Q)
and SOIC (R) Packages
–IN
–VS
+IN
+VS
OUTPUT
REF
TOP VIEW
REV.ELow Cost, Low Power
Instrumentation Amplifier
FEATURES
EASY TO USE
Gain Set with One External Resistor
(Gain Range 1 to 1000)
Wide Power Supply Range (62.3 V to 618 V)
Higher Performance than Three Op Amp IA Designs
Available in 8-Lead DIP and SOIC Packaging
Low Power, 1.3 mA max Supply Current
EXCELLENT DC PERFORMANCE (“B GRADE”)
50 mV max, Input Offset Voltage
0.6mV/8C max, Input Offset Drift
1.0 nA max, Input Bias Current
100 dB min Common-Mode Rejection Ratio (G = 10)
LOW NOISE
9 nV/√Hz, @ 1 kHz, Input Voltage Noise
0.28 mV p-p Noise (0.1 Hz to 10 Hz)
EXCELLENT AC SPECIFICATIONS
120 kHz Bandwidth (G = 100)
15 ms Settling Time to 0.01%
APPLICATIONS
Weigh Scales
ECG and Medical Instrumentation
Transducer Interface
Data Acquisition Systems
Industrial Process Controls
Battery Powered and Portable Equipment
PRODUCT DESCRIPTION
The AD620 is a low cost, high accuracy instrumentation ampli-
fier that requires only one external resistor to set gains of 1 to5101520
30,000
5,000
10,000
15,000
20,000
25,000
TOTAL ERROR, PPM OF FULL SCALE
SUPPLY CURRENT – mA
Figure 1.Three Op Amp IA Designs vs. AD620
SOURCE RESISTANCE – V
100M10k1k10M1M100k
10,000
1,000
RTI VOLTAGE NOISE(0.1 – 10Hz) –
V p-p
Figure 2.Total Voltage Noise vs. Source Resistance
1000. Furthermore, the AD620 features 8-lead SOIC and DIP
packaging that is smaller than discrete designs, and offers lower
power (only 1.3 mA max supply current), making it a good fit
for battery powered, portable (or remote) applications.
The AD620, with its high accuracy of 40 ppm maximum
nonlinearity, low offset voltage of 50μV max and offset drift of
0.6 μV/°C max, is ideal for use in precision data acquisition
systems, such as weigh scales and transducer interfaces. Fur-
thermore, the low noise, low input bias current, and low power
of the AD620 make it well suited for medical applications such
as ECG and noninvasive blood pressure monitors.
The low input bias current of 1.0 nA max is made possible with
the use of Superbeta processing in the input stage. The AD620
works well as a preamplifier due to its low input voltage noise of
9 nV/√Hz at 1 kHz, 0.28μV p-p in the 0.1 Hz to 10 Hz band,
0.1 pA/√Hz input current noise. Also, the AD620 is well suited
for multiplexed applications with its settling time of 15μs to
0.01% and its cost is low enough to enable designs with one in-
amp per channel.
AD620–SPECIFICATIONS(Typical @ +258C, VS = 615V, and RL = 2 kV, unless otherwise noted)
INPUT CURRENT
INPUT
OUTPUT
AD620
NOISE
REFERENCE INPUT
POWER SUPPLY
TEMPERATURE RANGE
NOTESSee Analog Devices military data sheet for 883B tested specifications.
2Does not include effects of external resistor RG.One input grounded. G = 1.This is defined as the same supply range which is used to specify PSR.
Specifications subject to change without notice.
AD620
NOTESStresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.Specification is for device in free air:
8-Lead Plastic Package: qJA = 95°C/W
8-Lead Cerdip Package: qJA = 110°C/W
8-Lead SOIC Package: qJA = 155°C/W
ABSOLUTE MAXIMUM RATINGS1
SupplyVoltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±18V
InternalPowerDissipation2 . . . . . . . . . . . . . . . . . . . . .650 mW
Input Voltage (Common Mode) . . . . . . . . . . . . . . . . . . . .±VS
DifferentialInputVoltage . . . . . . . . . . . . . . . . . . . . . . . .±25V
Output Short Circuit Duration .. . . . . . . . . . . . . . . .Indefinite
Storage Temperature Range (Q) . . . . . . . . . .–65°C to +150°C
Storage Temperature Range (N, R) . . . . . . . .–65°C to +125°C
Operating Temperature Range
AD620 (A, B) . . . . . . . . . . . . . . . . . . . . . .–40°C to +85°C
AD620 (S) . . . . . . . . . . . . . . . . . . . . . . . .–55°C to +125°C
Lead Temperature Range
(Soldering10seconds) . . . . . . . . . . . . . . . . . . . . . . .+300°C
ORDERING GUIDE
*N = Plastic DIP; Q = Cerdip; SO = Small Outline.
METALIZATION PHOTOGRAPH
Dimensions shown in inches and (mm).
Contact factory for latest dimensions.
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD620 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
Typical Characteristics(@ +258C, VS = 615 V, RL = 2 kV, unless otherwise noted)
INPUT OFFSET VOLTAGE – mV
–400+40+80
PERCENTAGE OF UNITS
–80
Figure 3.Typical Distribution of Input Offset Voltage
INPUT BIAS CURRENT – pA
–6000+600
PERCENTAGE OF UNITS
–1200+1200
Figure 4.Typical Distribution of Input Bias Current
–2000+200+400
INPUT OFFSET CURRENT – pA
PERCENTAGE OF UNITS
–4000
Figure 5.Typical Distribution of Input Offset Current
Figure 6.Input Bias Current vs. Temperature
CHANGE IN OFFSET VOLTAGE –
WARM-UP TIME – Minutes05132
Figure 7.Change in Input Offset Voltage vs.
Warm-Up Time
Figure 8.Voltage Noise Spectral Density vs. Frequency,
AD620–Typical Characteristics
FREQUENCY – Hz
CURRENT NOISE – fA/
Figure 9.Current Noise Spectral Density vs. Frequency
RTI NOISE – 2.0
V/DIV
TIME – 1 SEC/DIV
Figure 10a.0.1 Hz to 10 Hz RTI Voltage Noise (G = 1)
RTI NOISE – 0.1
V/DIV
TIME – 1 SEC/DIV
Figure 10b.0.1 Hz to 10 Hz RTI Voltage Noise (G = 1000)
Figure 11.0.1 Hz to 10 Hz Current Noise, 5 pA/Div
SOURCE RESISTANCE – V
TOTAL DRIFT FROM 25
8C TO 85
8C, RTI –
100,00010M
10,000
10k1M100k
Figure 12.Total Drift vs. Source Resistance
FREQUENCY – Hz
CMR – dB
+160
+80
+40
+60
+140
+100
+120
100k10k1k10010
+20
Figure 13.CMR vs. Frequency, RTI, Zero to 1 kΩ Source
Imbalance
FREQUENCY – Hz
PSR – dB
100k10k1k10010
180
Figure 14.Positive PSR vs. Frequency, RTI (G = 1–1000)
FREQUENCY – Hz
PSR – dB
100k10k1k10010
180
Figure 15.Negative PSR vs. Frequency, RTI (G = 1–1000)
10010M
100k1M10k
FREQUENCY – Hz
GAIN – V/V
0.1
Figure 16.Gain vs. Frequency

Figure 17.Large Signal Frequency Response
INPUT VOLTAGE LIMIT – Volts
(REFERRED TO SUPPLY VOLTAGES)
+1.0
+0.50
+1.5
SUPPLY VOLTAGE 6 Volts
+VS –0.0
–VS +0.0
Figure 18.Input Voltage Range vs. Supply Voltage, G = 1
+1.0
+0.50
+1.5
SUPPLY VOLTAGE 6 Volts
OUTPUT VOLTAGE SWING – Volts
(REFERRED TO SUPPLY VOLTAGES)
+VS –0.0
–VS +0.0
Figure 19.Output Voltage Swing vs. Supply Voltage,
G = 10
AD620
OUTPUT VOLTAGE SWING – Volts p-p
LOAD RESISTANCE – V10k
1001k
Figure 20.Output Voltage Swing vs. Load Resistance
Figure 21.Large Signal Pulse Response and Settling Time
G = 1 (0.5 mV = 0.01%)
Figure 22.Small Signal Response, G = 1, RL = 2 kΩ,
CL = 100 pF
Figure 23.Large Signal Response and Settling Time,
G = 10 (0.5 mV = 001%)
Figure 24.Small Signal Response, G = 10, RL = 2kΩ,
CL = 100 pF
Figure 25.Large Signal Response and Settling Time,
G = 100 (0.5 mV = 0.01%)

Partno	Mfg	Dc	Qty	Available	Descript
AD620	AD	N/a	90	avai	Low Drift, Low Power Instrumentation Amp With Set Gains of 1 to 1000
AD620		N/a	4	avai	Low Drift, Low Power Instrumentation Amp With Set Gains of 1 to 1000
AD620	AD ?	N/a	60	avai	Low Drift, Low Power Instrumentation Amp With Set Gains of 1 to 1000