ADA4817-2 Dual, Low Noise, 1 GHz FastFET Operational Amplifier

The ADA4817-1 (single) and ADA4817-2 (dual) FastFET™ amplifiers are unity-gain stable, ultrahigh speed, voltage feedback amplifiers with FET inputs. These amplifiers were developed with the Analog Devices, Inc., proprietary eXtra fast complementary bipolar (XFCB) process, which allows the amplifiers to achieve ultralow noise (4 nV/√Hz; 2.5 fA/√Hz) as well as very high input impedances.

With 1.3 pF of input capacitance, low noise (4 nV/√Hz), low offset voltage (2 mV maximum), and 1050 MHz −3 dB bandwidth, the ADA4817-1/ADA4817-2 are ideal for data acquisition front ends as well as wideband transimpedance applications, such as photodiode preamps.

With a wide supply voltage range from 5 V to 10 V and the ability to operate on either single or dual supplies, the ADA4817-1/ADA4817-2 are designed to work in a variety of applications including active filtering and ADC driving.

The ADA4817-1 is available in a 3 mm × 3 mm, 8-lead LFCSP and 8-lead SOIC, and the ADA4817-2 is available in a 4 mm × 4 mm, 16-lead LFCSP. These packages feature a low distortion pinout that improves second harmonic distortion and simplifies circuit board layout. They also feature an exposed paddle that provides a low thermal resistance path to the printed circuit board (PCB). This enables more efficient heat transfer and increases reliability. These products are rated to work over the extended industrial temperature range (−40°C to +105°C).

Applications

Features and Benefits

High speed

−3 dB bandwidth (G = 1, RL = 100 Ω): 1050 MHz
Slew rate: 870 V/μs
0.1% settling time: 9 ns

−3 dB bandwidth (G = 1, RL = 100 Ω): 1050 MHz

Slew rate: 870 V/μs

0.1% settling time: 9 ns

Low input bias current: 2 pA

Low input capacitance

Common-mode capacitance: 1.3 pF
Differential-mode capacitance: 0.1 pF

Common-mode capacitance: 1.3 pF

Differential-mode capacitance: 0.1 pF

Low noise

4 nV/√Hz at 100 kHz
2.5 fA/√Hz at 100 kHz

4 nV/√Hz at 100 kHz

2.5 fA/√Hz at 100 kHz

Low distortion: −90 dBc at 10 MHz (G = 1, RL = 1 kΩ)

Offset voltage: 2 mV maximum

High output current: 40 mA

Supply current per amplifier: 19 mA

Power-down supply current per amplifier: 1.5 mA

Amplifiers

Instrumentation and Measurement

Electronic Test & Measurement

SPICE Models

ADA4817 SPICE Macro Model .CIR

Reference Designs

CN0273 Design & Integration Files .ZIP

Data Sheets

Document	note
ADA4817-1/ADA4817-2: Low Noise, 1 GHz FastFET Op Amps Data Sheet (Rev. C)	PDF 616.85 K

Application Notes

Document	note
AN-0993: Active Filter Evaluation Board for Analog Devices, Inc., - Low Distortion Pinout Op Amps (Rev. 0)	PDF 107 kB
AN-402: Replacing Output Clamping Op Amps with Input Clamping Amps	PDF 55 kB
AN-581: Biasing and Decoupling Op Amps in Single Supply Applications (Rev. 0)	PDF 166 kB
AN-417: Fast Rail-to-Rail Operational Amplifiers Ease Design Constraints in Low Voltage High Speed Systems	PDF 228 kB

User Guides

Document	note
UG-082: Evaluation Board User Guide for Dual High Speed Operational Amplifiers(16-Lead, 4 mm × 4 mm LFCSP with Dedicated Feedback Pin)	PDF 253 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADA4817-2ACPZ-R2 Production	16 ld LFCSP (4x4x.85mm, 2.10mm exposed pad)	REEL 250	-40 to 105C	6.92	6.92	Y
ADA4817-2ACPZ-R7 Production	16 ld LFCSP (4x4x.85mm, 2.10mm exposed pad)	REEL 1500	-40 to 105C	0	4.98	Y
ADA4817-2ACPZ-RL Production	16 ld LFCSP (4x4x.85mm, 2.10mm exposed pad)	REEL 5000	-40 to 105C	0	4.98	Y