AD8675 Analog Devices Data Handbook and Specifications manual

36 V Precision, 2.8 n V/√Hz Rail-to-Rail Output Op Amp

AD8675 FEATURES PIN CONFIGURATIONS Very low voltage noise: 2.8 n V/√Hz

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Rail-to-rail output swing AD8675

–IN V+7

Low input bias current: 2 n A maximum

+IN TOP VIEW OUT6 Very low offset voltage: 75 μV maximum (Not to Scale) V– NC5

Low input offset drift: 0.6 μV/°C maximum

NC = NO CONNECT

Very high gain: 120 d B

Wide bandwidth: 10 MHz typical Figure 1. 8-Lead SOIC_N (R-8)

±5 V to ±18 V operation

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APPLICATIONS AD8675 –IN V+7 TOP VIEW

Precision instrumentation +IN OUT6 (Not to Scale) PLL filters V– NC5

Laser diode control loops

NC = NO CONNECT

Strain gage amplifiers

Figure 2. 8-Lead MSOP (RM-8)

Medical instrumentation Thermocouple amplifiers

GENERAL DESCRIPTION

The AD8675 precision operational amplifier has ultralow offset, to the input) to be compensated externally. Unlike previous drift, and voltage noise combined with very low input bias circuits, the AD8675 accommodates this adjustment without currents over the full operating temperature range. The AD8675 adversely affecting the offset drift, CMRR, and PSRR of the is a precision, wide bandwidth op amp featuring rail-to-rail ww .BDTIC.com/ADI amplifier. Precision instrumentation, PLL, and other precision output swings and very low noise. Operation is fully specified filter circuits, position and pressure sensors, medical instrumen-

from ±5 V to ±15 V. tation, and strain gage amplifiers benefit greatly from the very

low noise, low input bias current, and wide bandwidth. Many

The AD8675 features a rail-to-rail output like that of the OP184,

systems can take advantage of the low noise, dc precision, and

but with wide bandwidth and even lower voltage noise, com-

rail-to-rail output swing provided by the AD8675 to maximize

bined with the precision and low power consumption like that

SNR and dynamic range.

of the industry-standard OP07 amplifier. Unlike other low noise, rail-to-rail op amps, the AD8675 has very low input bias The smaller packages and low power consumption afforded by current and low input current noise. the AD8675 allow maximum channel density or minimum 4-

board size for space-critical equipment.

With typical offset voltage of only 10 μV, offset drift of 0.2 μV/°C, and noise of only 0.10 μV p-p (0.1 Hz to 10 Hz), the AD8675 is The AD8675 is specified for the extended industrial temperature perfectly suited for applications where large error sources range (−40°C to +125°C). The AD8675 amplifier is available in cannot be tolerated. For applications with even lower offset the tiny 8-lead MSOP, and the popular 8-lead, narrow SOIC, tolerances, the proprietary nulling capability allows a combination Ro HS compliant packages. MSOP packaged devices are only

of both device and system offset errors up to 3.5 m V (referred available in tape and reel format.

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