AD8512 Low Noise, Low Input Bias Current, Wide Bandwidth Precision JFET Dual Op Amp

The AD8510/AD8512/AD8513 are single, dual, and quad precision JFET amplifiers that feature low offset voltage, input bias current, input voltage noise, and input current noise. The combination of low offsets, low noise, and very low input bias currents makes these amplifiers especially suitable for high impedance sensor amplification and precise current measurements using shunts. The combination of dc precision, low noise, and fast settling time results in superior accuracy in medical instruments, electronic measurement, and automated test equipment. Unlike many competitive amplifiers, the AD8510/ AD8512/AD8513 maintain their fast settling performance even with substantial capacitive loads. Unlike many older JFET amplifiers, the AD8510/AD8512/AD8513 do not suffer from output phase reversal when input voltages exceed the maximum common-mode voltage range. Fast slew rate and great stability with capacitive loads make the AD8510/AD8512/AD8513 a perfect fit for high performance filters. Low input bias currents, low offset, and low noise result in a wide dynamic range of photodiode amplifier circuits. Low noise and distortion, high output current, and excellent speed make the AD8510/AD8512/AD8513 great choices for audio applications.

The AD8510/AD8512 are both available in 8-lead narrow SOIC_N and 8-lead MSOP packages. MSOP-packaged parts are only available in tape and reel. The AD8513 is available in 14-lead SOIC_N and TSSOP packages.

The AD8510/AD8512/AD8513 are specified over the −40°C to +125°C extended industrial temperature range.

Applications

Instrumentation
Multipole filters
Precision current measurement
Photodiode amplifiers
Sensors
Audio

Features and Benefits

Fast settling time: 500 ns to 0.1%

Low offset voltage: 400 μV maximum

Low TCVOS: 1 μV/°C typical

Low input bias current: 25 pA typical at VS = ±15 V

Low noise: 8 nV/√Hz typical at f = 1 kHz

Low distortion: 0.0005%

No phase reversal

Unity gain stable

Amplifiers

SPICE Models

AD8512 SPICE Macro-Model .CIR

Data Sheets

Document	note
AD8510/AD8512/AD8513: Precision, Very Low Noise, Low Input Bias Current, Wide Bandwidth JFET Operational Amplifiers Data Sheet (Rev. I)	PDF 459 kB

Application Notes

Document	note
AN-649: Using the Analog Devices Active Filter Design Tool (Rev. 0)	PDF 5.3 M

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
AD8512ARMZ Production	8 ld MSOP	OTH 50	-40 to 125C	1.75	1.49	Y
AD8512ARMZ-REEL Production	8 ld MSOP	REEL 3000	-40 to 125C	0	1.49	Y
AD8512ARZ Production	8 ld SOIC	OTH 98	-40 to 125C	1.75	1.49	Y
AD8512ARZ-REEL Production	8 ld SOIC	REEL 2500	-40 to 125C	0	1.49	Y
AD8512ARZ-REEL7 Production	8 ld SOIC	REEL 1000	-40 to 125C	0	1.49	Y
AD8512BR Last Time Buy	8 ld SOIC	OTH 98	-40 to 125C	6.13	5.76	N
AD8512BR-REEL7 Last Time Buy	8 ld SOIC	REEL 1000	-40 to 125C	0	5.76	N
AD8512BRZ Production	8 ld SOIC	OTH 98	-40 to 125C	5.05	4.76	Y
AD8512BRZ-REEL Production	8 ld SOIC	REEL 2500	-40 to 125C	0	4.76	Y
AD8512BRZ-REEL7 Production	8 ld SOIC	REEL 1000	-40 to 125C	0	4.76	Y

Evaluation Boards

Part Number	Description	Price	RoHS
EVAL-PRAOPAMP-2CPZ	Dual CP-8 lead LFCSP Evaluation Board	20.19	Y
EVAL-PRAOPAMP-2RMZ	Dual RM-8 lead MSOP Evaluation Board	20.19	Y
EVAL-PRAOPAMP-2RZ	Dual R-8 lead SOIC Evaluation Board	20.19	Y