Ultralow Distortion, Low Power,
Low Noise, High Speed Op Amp
ADA4857-1/ADA4857-2
FEATURES
CONNECTION DIAGRAMS
ADA4857-1
High speed
TOP VIEW
(Not to Scale)
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
PD
FB
1
2
3
4
8
7
6
5
+V
S
OUT
NC
–IN
+IN
–V
S
NC = NO CONNECT
Wide supply voltage range: 5 V to 10 V
Power-down feature
Figure 1. 8-Lead LFCSP (CP)
Available in 3 mm × 3 mm 8-lead LFCSP (single), 8-lead SOIC
(single), and 4 mm × 4 mm 16-lead LFCSP (dual)
ADA4857-1
TOP VIEW
(Not to Scale)
FB
1
2
3
4
8
7
6
5
PD
+V
APPLICATIONS
–IN
+IN
S
Instrumentation
IF and baseband amplifiers
Active filters
OUT
NC
–V
S
NC = NO CONNECT
ADC drivers
Figure 2. 8-Lead SOIC (R)
DAC buffers
ADA4857-2
TOP VIEW
(Not to Scale)
12 –V
–IN1 1
+IN1 2
NC 3
S1
11 NC
10 +IN2
–V
4
9 –IN2
S2
NC = NO CONNECT
Figure 3. 16-Lead LFCSP (CP)
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.
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).
Rev. 0
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