Low Cost, 80 MHz
FastFET Op Amps
AD8033/AD8034
CONNECTION DIAGRAMS
FEATURES
FET input amplifier
1 pA typical input bias current
Very low cost
High speed
80 MHz, −3 dB bandwidth (G = +1)
80 V/μs slew rate (G = +2)
NC
–IN
+IN
1
2
3
4
8
7
6
5
NC
AD8033
AD8033
V
1
2
3
5
+V
S
OUT
+V
V
S
–V
S
OUT
–V
S
NC
+IN
4
–IN
NC = NO CONNECT
Figure 1. 8-Lead SOIC (R)
Figure 2. 5-Lead SC70 (KS)
Low noise
11 nV/√Hz (f = 100 kHz)
0.7 fA/√Hz (f = 100 kHz)
V
1
2
3
4
8
7
6
5
+V
OUT1
–IN1
S
V
OUT2
+IN1
–IN2
+IN2
Wide supply voltage range: 5 V to 24 V
Low offset voltage: 1 mV typical
Single-supply and rail-to-rail output
High common-mode rejection ratio: −100 dB
Low power: 3.3 mA/amplifier typical supply current
No phase reversal
–V
S
AD8034
Figure 3. 8-Lead SOIC (R) and 8-Lead SOT-23 (RJ)
24
21
18
15
12
9
V
= 200mV p-p
OUT
G = +10
G = +5
Small packaging: 8-lead SOIC, 8-lead SOT-23, and 5-lead SC70
APPLICATIONS
Instrumentation
Filters
G = +2
6
Level shifting
Buffering
3
G = +1
0
–3
–6
–9
G = –1
GENERAL DESCRIPTION
The AD8033/AD8034 FastFET™ amplifiers are voltage feedback
amplifiers with FET inputs, offering ease of use and excellent
performance. The AD8033 is a single amplifier and the AD8034
is a dual amplifier. The AD8033/AD8034 FastFET op amps in
Analog Devices, Inc., proprietary XFCB process offer significant
performance improvements over other low cost FET amps, such
as low noise (11 nV/√Hz and 0.7 fA/√Hz) and high speed (80 MHz
bandwidth and 80 V/μs slew rate).
0.1
1
10
FREQUENCY (MHz)
100
1000
Figure 4. Small Signal Frequency Response
The AD8033/AD8034 amplifiers only draw 3.3 mA/amplifier of
quiescent current while having the capability of delivering up to
40 mA of load current.
The AD8033 is available in a small package 8-lead SOIC and a
small package 5-lead SC70. The AD8034 is also available in a
small package 8-lead SOIC and a small package 8-lead SOT-23.
They are rated to work over the industrial temperature range of
−40°C to +85°C without a premium over commercial grade
products.
With a wide supply voltage range from 5 V to 24 V and fully
operational on a single supply, the AD8033/AD8034 amplifiers
work in more applications than similarly priced FET input
amplifiers. In addition, the AD8033/AD8034 have rail-to-rail
outputs for added versatility.
Despite their low cost, the amplifiers provide excellent overall
performance. They offer a high common-mode rejection of
−100 dB, low input offset voltage of 2 mV maximum, and low
noise of 11 nV/√Hz.
Rev. D
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rights of third parties that may result from its use. Specifications subject to change without notice. No
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