Precision Amplifiers (VOS < 1 mV, Bandwidth < 50 MHz)
Low Noise (Vn ≤ 10 nV/√Hz) Amplifiers
ADA4075-2: Ultralow Noise Amplifier at Lower Power
The ADA4075-2 is a dual, high performance, low noise operational amplifier combining excellent dc and ac characteristics on ADI’s iPolar® process.
ADI’s proprietary iPolar process is an advanced bipolar technology implementing vertical junction isolation with lateral trench isolation, allowing for low
noise performance amplifiers in smaller die size at faster speed and lower power.
Features
C5
•ꢀUltralow noise: 2.8 nV/√Hz at 1 kHz typical
IN
50pF
•ꢀUltralow distortion: 0.0002% typical
C1
R4
R5
10ꢀF
•ꢀLow supply current: 1.8 mA per amplifier typical
•ꢀOffset voltage: 1 mV maximum
•ꢀBandwidth: 6.5 MHz typical
•ꢀSlew rate: 12 V/ms typical
A1
1/2
4.7kꢁ
4.7kꢁ
A2
R1
R13
10kꢁ
OUT+
1/2
100ꢁ
ADA4075-2
ADA4075-2
R18
4.7kꢁ
R7
•ꢀUnity-gain stable
250ꢁ
R6
R8
R9
R2
4.7kꢁ
4.7kꢁ
100ꢁ 4.7kꢁ
FEEDBACK
TRIM
Applications
C4
•ꢀPrecision instrumentation
•ꢀProfessional audio
•ꢀActive filters
50pF
R3
SYMMETRY
TRIM
TEST
C3
10ꢀF
C2
10ꢀF
R10
R12
4.7kꢁ
C6
4.7kꢁ
4.7kꢁ
R11
250ꢁ
A3
1/2
50pF
A4
R14
ADA4075-2
OUT–
1/2
R15
100ꢁ
4.7kꢁ
ADA4075-2
R16
R17
4.7kꢁ
100ꢁ
NOTES
1. ALL RESISTORS SHOULD HAVE 1% TOLERANCE.
2. A1/A2 IN SAME PACKAGE; A3/A4 IN SAME PACKAGE.
Balanced line driver design.
ADA4004-1/ADA4004-2/ADA4004-4: Ultraprecision, 1.8 nV/√Hz, 36 V Amplifiers
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.
Features
250
•ꢀVery low voltage noise: 1.8 nV/√Hz
•ꢀLow input bias current: 90 nA maximum
•ꢀOffset voltage: 125 mV maximum
•ꢀHigh gain: 120 dB
ADA4004-4
V
= ꢁ15V
SY
200
150
100
50
•ꢀWide bandwidth: 12 MHz
•ꢀ65 V to 615 V operation
Applications
•ꢀPrecision instrumentation
•ꢀFilter blocks
•ꢀMicrophone preamplifiers
•ꢀIndustrial control
0
•ꢀThermocouples and RTDs
–55
–35
–15
5
25
45
(ꢀV)
65
85
105
V
OS
Number of amplifiers vs. input offset voltage.
www.analog.com/opamps
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