ADA4817-1_16 Datasheet, PDF (1/25 Pages) Analog Devices – Low Noise, 1 GHz FastFET Op Amps

Data Sheet
FEATURES
High speed
−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
Low noise
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
APPLICATIONS
Photodiode amplifiers
Data acquisition front ends
Instrumentation
Filters
ADC drivers
CCD output buffers
Low Noise, 1 GHz
FastFET Op Amps
ADA4817-1/ADA4817-2
CONNECTION DIAGRAMS
ADA4817-1
TOP VIEW
(Not to Scale)
PD 1
FB 2
8 +V_S
7 OUT
–IN 3
+IN 4
6 NIC
5 –V_S
NOTES
1. NIC = NO INTERNAL CONNECTION.
Figure 1. 8-Lead LFCSP (CP-8-13)
ADA4817-1
TOP VIEW
(Not to Scale)
FB 1
–IN 2
+IN 3
–V_S 4
8 PD
7 +V_S
6 OUT
5 NIC
NOTES
1. NIC = NO INTERNAL CONNECTION.
Figure 2. 8-Lead SOIC (RD-8-1)
ADA4817-2
TOP VIEW
(Not to Scale)
–IN1 1
+IN1 2
NIC 3
–V_S2 4
12 –V_S1
11 NC
10 +IN2
9 –IN2
GENERAL DESCRIPTION
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 band-
width, the ADA4817-1/ADA4817-2 are ideal for data acquisition
front ends as well as wideband transimpedance applications,
such as photodiode preamps.
Rev. C
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NOTES
1. NIC = NO INTERNAL CONNECTION.
Figure 3. 16-Lead LFCSP (CP-16-20)
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).
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