ADA4620-2ARZ-R7 datasheet(1/49 Pages) AD

Nome de Peças	ADA4620-2ARZ-R7

Descrição Electrónicos	36 V, Precision, Low Noise, 16.5 MHz JFET Op Amp with Rail-to-Rail Output

PDF	49 Pages

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Fabricante Electrônico	AD [Analog Devices]

Página de início	http://www.analog.com

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Data Sheet

ADA4620-1, ADA4620-2

36 V, Precision, Low Noise, 16.5 MHz JFET Op Amp with Rail-to-Rail Output

Rev. 0

DOCUMENT FEEDBACK

TECHNICAL SUPPORT

One Analog Wa y, Wilmington, MA 01887 - 2356, U.S.A.

T el: 781.329.4700

FEATURES



Low offset voltage: ±30 μV typ



Low offset voltage drift: ±0.32 μV/°C typ



Low input bias current: ±0.8 pA typ, ±5 pA max



Low 1/f noise: 225 nV p-p, 0.1 Hz to 10 Hz typ



Voltage noise density: 5.1 nV/√Hz at 1 kHz typ



Gain bandwidth product: 16.5 MHz typ



High slew rate: 32 V/µs typ



Low THD: −148 dB at 1 kHz typ



Low supply current: 1.3 mA per amplifier typ



Wide power supply range:



Single supply: 4.5 V to 36 V



Dual supplies: ±2.25 V to ±18 V



No phase reversal



Unity-gain stable



Extended high input common-mode range



(V+) − 4.4 V < VCM ≤ (V+)



Multiple channel options:



ADA4620-1 single channel



ADA4620-2 dual channel

APPLICATIONS



Transimpedance amplifiers



Electronic test and measurement



Scientific and field instruments



Semiconductor test



Data acquisition systems



High impedance sensors

Figure 1. Input Voltage Noise vs. Frequency

TYPICAL APPLICATION DIAGRAM

Figure 2. Photodiode Application with Key Elements

GENERAL DESCRIPTION

The ADA4620-1 and ADA4620-2 are 36 V, precision,

low noise, low offset drift, JFET op amps. The parts

offer the combination of top precision parameters at

speed, and at extended operating range and

temperature. The ADA4620 is ideal for high DC

precision and AC performance. The specifications

make the ADA4620 optimal as a front-end amplifier in

a data-acquisition (DAQ) system, or for a TIA circuit

with high input impedance.

For only 1.3 mA of supply current per amplifier, the

ADA4620 has a gain-bandwidth product of 16.5 MHz,

a 32 V/µs slew rate, 5.1 nV/√Hz of broadband noise,

and 225 nV p-p of 0.1 Hz to 10 Hz noise. The input

voltage range includes the negative supply, and the

output swings rail-to-rail.

The ADA4620 is specified for operating over the

temperature range of −40°C to +125°C, and dual

supplies ranging from ±2.25 V to ±18 V, or on a single

supply ranging from +4.5 V to +36 V. The ADA4620-

1 and ADA4620-2 are available in an 8-lead SOIC_N

package.

1k

100

10

1

0.1

1

10

100

1k

10k

100k

1M

10M

100M

FREQUENCY (Hz)

VCM = 0V

VSY = ±18V

VCM = (V–) + 0.1V

VCM = (V+) – 4.4V

CCM

CDM

VB

VOUT

RF

CF

AC GND

RSH

CPD

IPD

PHOTODIODE

MODEL

HIGH

SOURCE

Z

ADA4620-1/

ADA4620-2

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