Datasheet

1.8 nV/√Hz, 36 V Precision Amplifiers
ADA4004-1/ADA4004-2/ADA4004-4
Rev. G
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FEATURES
Very low voltage noise: 1.8 nV/√Hz
Low input bias current: 90 nA maximum
Offset voltage: 125 μV maximum
High gain: 120 dB
Wide bandwidth: 12 MHz
±5 V to ±15 V operation
APPLICATIONS
Precision instrumentation
Filter blocks
Microphone preamplifiers
Industrial control
Thermocouples and RTDs
Reference buffers
GENERAL DESCRIPTION
The ADA4004-1/ADA4004-2/ADA4004-4 are 1.8 nV/√Hz
precision amplifiers featuring 40 μV offset, 0.7 μV/°C drift, 12
MHz bandwidth, and low 1.7 mA per amplifier supply current.
The ADA4004-1/ADA4004-2/ADA4004-4 are designed on the
high performance iPolar™ process, enabling improvements such
as reduced noise and power consumption, increased speed and
stability, and smaller footprint size. Novel design techniques enable
the ADA4004-1/ADA4004-2/ADA4004-4 to achieve 1.8 nV/√Hz
voltage noise density and a low 6 Hz 1/f noise corner frequency
while consuming just 1.7 mA per amplifier. The small package
saves board space, reduces cost, and improves layout flexibility.
Applications for these amplifiers include high precision controls,
PLL filters, high performance precision filters, medical and
analytical instrumentation, precision power supply controls,
ATE, and data acquisition systems. Operation is fully specified
from ±5 V to ±15 V from −40°C to +125°C.
The ADA4004-1, ADA4004-2, and ADA4004-4 are members
of a growing series of low noise op amps offered by Analog
Devices, Inc. (see Table 1).
Table 1. Voltage Noise
Pkg. 0.9 nV 1.1 nV 1.8 nV 2.8 nV 3.8 nV
Single AD797 AD8597 ADA4004-1 AD8675 AD8671
Dual AD8599 ADA4004-2 AD8676 AD8672
Quad ADA4004-4 AD8674
PIN CONFIGURATIONS
OUT
1
+IN 3
V– 2
V+5
–IN4
ADA4004-1
TOP VIEW
(Not to Scale)
05577-001
Figure 1. 5-Lead SOT
(RJ-5)
NC 1
–
IN 2
+
IN
3
V–
4
NC 8
V+ 7
OUT
6
NC
5
NC = NO CONNECT
ADA4004-1
TOP VIEW
(Not to Scale)
05577-002
Figure 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
NC = NO CONNECT
ADA4004-2
TOP VIEW
(Not to Scale)
0
5577-003
Figure 3. 8-Lead MSOP (RM-8) and 8-Lead SOIC (R-8)
05577-091
1
OUT A OUT D
14
2
–IN A –IN D
13
3
+IN A +IN D
12
4
V+ V–
11
5
+IN B +IN C
10
6
–IN B –IN C
9
7
OUT B OUT C
8
ADA4004-4
TOP VIEW
(Not to Scale)
Figure 4. 14-Lead SOIC
(R-14)
TOP VIEW
(Not to Scale)
ADA4004-4
–IN A
1
+IN A
2
V+
3
+IN B
4
–IN D
12
+IN D
11
V–
10
+IN C
9
–IN B
5
OUT B
6
OUT C
7
–IN C
8
NC
16
OUT A
15
OUT D
14
NC
13
NOTES
1. NC = NO CONNECT.
2. IT IS RECOMMENDED THAT THE EXPOSED PAD
BE CONNECTED TO V–.
05577-005
Figure 5. 16-Lead LFCSP
(CP-16-4)