High Speed Amplifiers (BW > 50 MHz)
FastFET Amplifiers
ADA4817–1/ADA4817–2: Low Noise, 1GHZ FastFET
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 Analog Devices 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.
Features
•ꢀHigh speed
6
G = 1
•ꢀ −3 dB bandwidth (G = 1, RL = 100 V): 1050 MHz
3
•ꢀ Slew rate: 870 V/ms
G = 2
•ꢀ 0.1% settling time: 9 ns
0
•ꢀLow input bias current: 2 pA
G = 5
•ꢀLow input capacitance
–3
–6
•ꢀ Common-mode capacitance: 1.3 pF
•ꢀ Differential-mode capacitance: 0.1 pF
•ꢀLow noise
–9
•ꢀ 4 nV/√Hz @ 100 kHz
–12
100k
•ꢀ 2.5 fA/√Hz @ 100 kHz
1M
10M
100M
1G
10G
FREQUENCY (Hz)
•ꢀLow distortion
•ꢀ −90 dBc @ 10 MHz (G = 1, RL = 1 kV)
•ꢀ 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
Wideband photodiode preamplifier.
Applications
•ꢀPhotodiode amplifiers
•ꢀData acquisition front ends
•ꢀInstrumentation
•ꢀFilters
•ꢀADC drivers
•ꢀCCD output buffers
FastFET Amplifiers
Distortion
Supply
Voltage
(V)
BW @ Slew
ACL Min Rate
(MHz) (V/ms)
Price
@ 1k
(OEM $US)
SFDR1 @ BW
Part
Number
No. of
Amps
ACL
Min
Noise
(nV/ z)
VOS Max
IB
IS/Amp
IOUT
Temp
Disable
Rail-to-Rail1
Packaging
√H
(mV) (µA Max) (mA Typ) (mA) Range2
(dBc) (MHz)
ADA4817-1
ADA4817-2
1
2
•
•
2.95
4.98
1
8
1
1050
54
870
500
180
–90
–95
–88
10
1
4
2
1
20 pA
5 pA
7 pA
19
6.6
6.4
40
30
35
H
I
SOIC/LFCSP
SOT-23
5, 65
AD8067
1
RRO
RRO
6.6
7
2.32
5, 65, 612
5, 65, 612
AD8065
AD8066
1
2
1.62
2.32
145
1
1.5
I5
SOT-23/MSOP
AD8033
AD8034
1
2
1.08
1.61
RRO
1
80
80
–823
1
11
2
11 pA
3.3
25
I
SC70/SOT-23
5, 65, 612
1 RRIO: rail-to-rail input/output, RRO: rail-to-rail output, SS: single supply (IVR includes –VSY).
2
Temp range: H = extended industrial (–40°C to +125°C), I = industrial (–40°C to +85°C).
THD: total harmonic distortion.
3
Operational Amplifier Selection Guide
40
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ADI [ ADI ]
