Features: Very low voltage noise 2.8 nV/Hz
Rail-to-rail output swing
Low input bias current: 2 nA maximum
Very low offset voltage: 75 V maximum
Low input offset drift: 0.6 V/°C maximum
Very high gain: 120 dB
Wide bandwidth: 10 MHz typical
±5 V to ±18 V operationApplicationPrecision instrumentation
PLL filters
Laser diode control loops
Strain gage amplifiers
Medical instrumentation
Thermocouple amplifiersPinout
Specifications
| -3dB Bandwidth |
10MHz |
| Slew Rate |
2.5V/s |
| Vos |
10V |
| Ib |
0.5nA |
| Input Noise (nV/rtHz) |
2.8nV/rtHz |
| Vcc-Vee Supply (V) |
10 to 36 |
| Iq per Amplifier (max) |
2.9mA |
| # OpAmps per Pkg |
1 |
| Operating Temp Range |
-40 to +125 |
| Packages |
SOIC,SOP |
| Parameters |
Ratings |
Supply Voltage
Input Voltage
Differential Input Voltage
Output Short-Circuit Duration to GND
Storage Temperature Range
RM, R Packages
Operating Temperature Range
Junction Temperature Range
RM, R Packages
Lead Temperature Range (Soldering, 10 sec) |
±18 V
±V supply
±0.7 V
Indefinite
−65°C to +150°C
−40°C to +125°C
−65°C to +150°C
+300°C |
DescriptionThe AD8675 precision operational amplifier has ultralow offset, drift, and voltage noise combined with very low input bias currents over the full operating temperature range. The AD8675 is a precision, wide bandwidth op amp featuring rail-to-rail output swings and very low noise. Operation is fully specified from ±5 V to ±15 V.
The AD8675 features a rail-to-rail output like that of the OP184, but with wide bandwidth and even lower voltage noise, com-bined with the precision and low power consumption like that of the industry-standard OP07 amplifier. Unlike other low noise, rail-to-rail op amps, the AD8675 has very low input bias current and low input current noise.
With typical offset voltage of only 10 V, offset drift of 0.2 V/°C, and noise of only 0.10 V p-p (0.1 Hz to 10 Hz), the AD8675 is perfectly suited for applications where large error sources cannot be tolerated. For applications with even lower offset tolerances, the proprietary nulling capability allows a combination of both device and system offset errors up to 3.5 mV (referred to the input) to be compensated externally. Unlike previous circuits, the AD8675 accommodates this adjustment without adversely affecting the offset drift, CMRR, and PSRR of the amplifier. Precision instrumentation, PLL, and other precision filter circuits, position and pressure sensors, medical instru-mentation, and strain gage amplifiers benefit greatly from the very low noise, low input bias current, and wide bandwidth. Many systems can take advantage of the low noise, dc precision, and rail-to-rail output swing provided by the AD8675 to maximize SNR and dynamic range.
The smaller packages and low power consumption afforded by the AD8675 allow maximum channel density or minimum board size for space-critical equipment.
The AD8675 is specified for the extended industrial temperature range (−40°C to +125°C). The AD8675 amplifier is available in the tiny MSOP-8, and the popular 8-lead, narrow SOIC, lead-free packages. MSOP packaged devices are only available in tape and reel format.
AD8675 Data Sheet
