Datasheet

Low Cost, Precision JFET
Input Operational Amplifiers
Data Sheet
ADA4000-1/ADA4000-2/ADA4000-4
Rev. B Document Feedback
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FEATURES
High slew rate: 20 V/μs
Fast settling time
Low offset voltage: 1.70 mV maximum
Bias current: 40 pA maximum
±4 V to ±18 V operation
Low voltage noise: 16 nV/Hz
Unity gain stable
Common-mode voltage includes +V
S
Wide bandwidth: 5 MHz
APPLICATIONS
Reference gain/buffers
Level shift/driving
Active filters
Power line monitoring/control
Current/voltage sense or monitoring
Data acquisition
Sample-and-hold circuits
Integrators
GENERAL DESCRIPTION
The ADA4000-1/ADA4000-2/ADA4000-4 are junction field
effect transistor (JFET) input operational amplifiers featuring
precision, very low bias current, and low power. Combining
high input impedance, low input bias current, wide bandwidth,
fast slew rate, and fast settling time, the ADA4000-1/ADA4000-
2/ADA4000-4 are ideal amplifiers for driving analog-to-digital
inputs and buffering digital-to-analog converter outputs. The
input common-mode voltage includes the positive power supply,
which makes the device an excellent choice for high-side signal
conditioning.
Additional applications for the ADA4000-1/ADA4000-2/
ADA4000-4 include electronic instruments, automated test
equipment (ATE) amplification, buffering, integrator circuits,
instrumentation-quality photodiode amplification, and fast
precision filters (including phase-locked loop filters). The devices
also include utility functions, such as reference buffering, level
shifting, control input/output interface, power supply control,
and monitoring functions.
PIN CONFIGURATIONS
O
UT 1
V– 2
+IN 3
V+ 5
–IN 4
ADA4000-1
TOP VIEW
(Not to Scale)
05791-001
Fig
ure 1. 5-Lead TSOT (UJ-5)
NC 1
–IN 2
+IN 3
V–
4
NC 8
V+ 7
OUT 6
NC
5
NC = NO CONNECT
ADA4000-1
TOP VIEW
(Not to Scale)
05791-002
Fig
ure 2. 8-Lead SOIC (R-8)
OUT A 1
–IN A 2
+IN A 3
–V 4
+V 8
OUT B 7
–IN B 6
+IN B 5
ADA4000-2
TOP VIEW
(Not to Scale)
05791-027
Fig
ure 3. 8-Lead SOIC (R-8)
OUT A 1
–IN A 2
+IN A
3
–V
4
+V 8
OUT B 7
–IN B
6
+IN B
5
ADA4000-2
TOP VIEW
(Not to Scale)
05791-028
Fig
ure 4. 8-Lead MSOP (RM-8)
OUT A 1
–IN A
2
+IN A 3
+V
4
OUT D 14
–IN D
13
+IN D 12
–V
11
+IN B 5 +IN C 10
–IN B 6 –IN C 9
OUT B 7 OUT C 8
ADA4000-4
TOP VIEW
(Not to Scale)
05791-029
Figure 5.
14-Lead SOIC (R-14)
ADA4000-4
1
2
3
4
5
6
7
–IN A
+IN A
+V
OUT B
–IN B
+IN B
OUT A
14
13
12
11
10
9
8
–IN D
+IN D
–V
OUT C
–IN C
+IN C
OUT D
TOP VIEW
(Not to Scale)
05791-030
Figure 6.
14-Lead TSSOP (RU-14)