ADA4857-1 Datasheet, PDF (1/20 Pages) Analog Devices – Ultralow Distortion, Low Power, Low Noise, High Speed Op Amp

FEATURES
High speed
850 MHz, −3 dB bandwidth (G = +1, RL = 1 kΩ, LFSCP)
750 MHz, −3 dB bandwidth (G = +1, RL = 1 kΩ, SOIC)
2800 V/μs slew rate
Low distortion: −88 dBc @ 10 MHz (G = +1, RL = 1 kΩ)
Low power: 5 mA/amplifier @ 10 V
Low noise: 4.4 nV/√Hz
Wide supply voltage range: 5 V to 10 V
Power-down feature
Available in 3 mm × 3 mm 8-lead LFCSP (single), 8-lead SOIC
(single), and 4 mm × 4 mm 16-lead LFCSP (dual)
APPLICATIONS
Instrumentation
IF and baseband amplifiers
Active filters
ADC drivers
DAC buffers
Ultralow Distortion, Low Power,
Low Noise, High Speed Op Amp
ADA4857-1/ADA4857-2
CONNECTION DIAGRAMS
ADA4857-1
TOP VIEW
(Not to Scale)
PD 1
FB 2
–IN 3
+IN 4
8 +V_S
7 OUT
6 NC
5 –V_S
NC = NO CONNECT
Figure 1. 8-Lead LFCSP (CP)
ADA4857-1
TOP VIEW
(Not to Scale)
FB 1
–IN 2
+IN 3
–V_S 4
8 PD
7 +V_S
6 OUT
5 NC
NC = NO CONNECT
Figure 2. 8-Lead SOIC (R)
ADA4857-2
TOP VIEW
(Not to Scale)
–IN1 1
+IN1 2
NC 3
–V_S2 4
12 –V_S1
11 NC
10 +IN2
9 –IN2
GENERAL DESCRIPTION
The ADA4857 is a unity gain stable, high speed, voltage feedback
amplifier with low distortion, low noise, and high slew rate. With a
spurious-free dynamic range (SFDR) of −88 dBc @ 10 MHz,
the ADA4857 is an ideal solution in a variety of applications
including ultrasounds, ATE, active filters, and ADC drivers.
The Analog Devices, Inc., proprietary next-generation XFCB
process and innovative architecture enables such high performance
amplifiers.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
NC = NO CONNECT
Figure 3. 16-Lead LFCSP (CP)
The ADA4857 has 850 MHz bandwidth, 2800 V/μs slew rate, and
settles to 0.1% in 15 ns. With a wide supply voltage range (5 V to
10 V), the ADA4857 is an ideal candidate for systems that require
high dynamic range, precision, and speed.
The ADA4857-1 amplifier is available in a 3 mm × 3 mm, 8-lead
LFCSP and a standard 8-lead SOIC. The ADA4857-2 is available in
a 4 mm × 4 mm, 16-lead LFSCP. The LFCSP features an exposed
paddle that provides a low thermal resistance path to the PCB. This
path enables more efficient heat transfer and increases reliability.
The ADA4857 works over the extended industrial temperature
range (−40°C to +125°C).
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