AD8610ARM Analog Devices, AD8610ARM Datasheet

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AD8610ARM

Manufacturer Part Number
AD8610ARM
Description
Precision Very Low Noise Low Input Bias Current Wide Bandwith JFET Operational Amplifier
Manufacturer
Analog Devices
Datasheet

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a
GENERAL DESCRIPTION
The AD8610 is a very high precision JFET input amplifier
featuring ultralow offset voltage and drift, very low input voltage
and current noise, very low input bias current, and wide bandwidth.
Unlike many JFET amplifiers, the AD8610 input bias current is
low over the entire operating temperature range. The AD8610 is
stable with capacitive loads of over 1000 pF in noninverting
unity gain, and much larger capacitive loads can be driven easily
at higher noise gains. The AD8610 swings to within 1.2 V of the
supplies even with a 1 kΩ load, maximizing dynamic range even
with limited supply voltages. Outputs slew at 50 V/µs in either
inverting or noninverting gain configurations and settle to 0.01%
accuracy in less than 600 ns. Combined with the high input
impedance, great precision, and very high output drive, the AD8610
√Hz
Low Input Bias Current, Wide Bandwidth
is an ideal amplifier for driving high performance A/D inputs and
buffering D/A converter outputs.
Applications for the AD8610 include electronic instruments;
ATE amplification, buffering, and integrator circuits; CAT/
MRI/Ultrasound medical instrumentation; instrumentation qual-
ity photodiode amplification; fast precision filters (including
PLL filters); and high quality audio.
The AD8610 is fully specified over the extended industrial
(–40°C to +125°C) temperature range. The AD8610 is available
in the narrow 8-lead SOIC and the tiny MSOP8 surface-mount
packages. MSOP8 packaged devices are available only in tape
and reel.
Precision, Very Low Noise,
JFET Operational Amplifier
FUNCTIONAL BLOCK DIAGRAM
8-Lead MSOP and SOIC
(RM-8 and R-8 Suffixes)
NULL
V
IN
IN
NC = NO CONNECT
1
4
AD8610
8
5
NC
OUT
NULL
V
AD8610

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AD8610ARM Summary of contents

Page 1

GENERAL DESCRIPTION The AD8610 is a very high precision JFET input amplifier featuring ultralow offset voltage and drift, very low input voltage and current noise, very low input bias current, and wide bandwidth. Unlike many JFET amplifiers, the ...

Page 2

AD8610–SPECIFICATIONS Parameter INPUT CHARACTERISTICS Offset Voltage (AD8610B) Offset Voltage (AD8610A) Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift, AD8610B Offset Voltage Drift, AD8610A OUTPUT CHARACTERISTICS Output Voltage High Output ...

Page 3

ELECTRICAL SPECIFICATIONS Parameter INPUT CHARACTERISTICS Offset Voltage (AD8610B) Offset Voltage (AD8610A) Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift AD8610B Offset Voltage Drift AD8610A OUTPUT CHARACTERISTICS Output Voltage High ...

Page 4

... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Model AD8610ARM –40°C to +125°C AD8610AR AD8610BR CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection ...

Page 5

V = 13V 150 250 50 50 150 250 INPUT OFFSET VOLTAGE – V ± 600 V = 5V S 400 200 0 200 400 600 25 85 125 40 TEMPERATURE ...

Page 6

AD8610 1 13V S 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 100 1k 10k 100k 1M 10M 100M RESISTANCE LOAD – 12. 13V 12.00 11.95 11.90 11.85 11.80 40 ...

Page 7

V = 13V S 140 120 100 +PSRR 80 –PSRR –20 –40 100 1k 10k 100k 1M 10M 60M FREQUENCY – Hz ± 140 V = 13V S 120 100 ...

Page 8

AD8610 100 GAIN = GAIN = 10 30 GAIN = 100 10k 100k 1M 10M 100M FREQUENCY – ...

Page 9

... C offset voltage and offset voltage tempco trimming. These process breakthroughs allowed Analog Devices’ world class IC designers to create an amplifier with faster slew rate and more than 50% higher bandwidth at half of the current consumed by its closest competition. The AD8610 is unconditionally stable in all gains, even with capacitive loads well in excess of 1 nF. The AD8610B achieves less than 100 µ ...

Page 10

AD8610 Driving Large Capacitive Loads The AD8610 has excellent capacitive load driving capability and can safely drive when operating with ± supply. Figures 2 and 3 compare the AD8610 against the OPA627 in the ...

Page 11

V = 13V – 42.1V/ s TIME – 400ns/DIV V = 13V – 54V/ s TIME – 400ns/DIV V = 13V S ...

Page 12

AD8610 CH = 20.8V/DIV 19.4V/DIV 2 0V TIME – 400ns/DIV Input Overvoltage Protection When the input of an amplifier is driven below more than one V , large currents will flow from the ...

Page 13

Noise vs. Common-Mode Voltage AD8610 noise density varies only 10% over the input range as shown in Table I. Table I. Noise vs. Common-Mode Voltage kHz (V) Noise Reading (nV/ CM –10 7.21 –5 6.89 ...

Page 14

AD8610 0.1 0.00001 0.0001 0.001 0.01 LOAD CURRENT – A ± Although operating conditions imposed on the AD8610 (± are less favorable than the OPA627 (±15 V), it can be seen that ...

Page 15

V+ V IN1 AD8610 U1 V– C5 10pF 15pF IN2 AD8610 U2 V– 10pF High-Speed Filters The four most popular configurations are Butterworth, Elliptical, Bessel, ...

Page 16

AD8610 Revision History Location Data Sheet changed from REV REV. A. Edits to FIGURE ...

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