ADA4857-1_17 Datasheet, PDF (1/21 Pages) Analog Devices – Ultralow Distortion, Low Power, Low Noise, High Speed Op Amp

Data Sheet
FEATURES
High speed
850 MHz, −3 dB bandwidth (G = +1, RL = 1 kΩ, LFCSP)
750 MHz, −3 dB bandwidth (G = +1, RL = 1 kΩ, SOIC)
2800 V/μs slew rate
Low distortion: −88 dBc at 10 MHz (G = +1, RL = 1 kΩ)
Low power: 5 mA/amplifier at 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
NOTES
1. NC = NO CONNECT. DO NOT CONNECT
TO THIS PIN.
2. THE EXPOSED PAD MAY BE CONNECTED
TO GND OR VS.
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 at 10 MHz, the
ADA4857 is an ideal solution for 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.
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
Rev. D
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NOTES
1. NC = NO CONNECT. DO NOT CONNECT
TO THIS PIN.
2. THE EXPOSED PAD MAY BE CONNECTED
TO GND OR VS.
Figure 3. 16-Lead LFCSP (CP)
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 LFCSP. The LFCSP features an exposed
paddle that provides a low thermal resistance path to the printed
circuit board (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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