ANALOG DEVICES ADA4004-1 Service Manual
–
+
1.8 nV/√Hz, 36 V Precision Amplifiers
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 Tab le 1).
ADA4004-1/ADA4004-2/ADA4004-4
PIN CONFIGURATIONS
1
OUT
ADA4004-1
V– 2
TOP VIEW
(Not to Scale)
+IN 3
Figure 1. 5-Lead SOT
(RJ-5)
NC
1
ADA4004-1
IN
2
3
IN
TOP VIEW
(Not to Scale)
4
V–
NC = NO CONNECT
Figure 2. 8-Lead SOIC
(R-8)
OUT A
1
–IN A
+IN A
ADA4004-2
2
TOP VIEW
3
(Not to Scale)
4
V–
NC = NO CONNECT
Figure 3. 8-Lead MSOP (RM-8) and 8-Lead SOIC (R-8)
1
OUT A OUT D
2
–IN A –IN D
3
+IN A +IN D
V+ V–
+IN B +IN C
–IN B –IN C
OUT B OUT C
4
5
6
7
ADA4004-4
TOP VIEW
(Not to Scale)
Figure 4. 14-Lead SOIC
(R-14)
NC16OUT A15OUT D14NC
13
1
–IN A
ADA4004-4
2
+IN A
V+
+IN B
3
4
TOP VIEW
(Not to Scale)
V+5
–IN4
05577-001
NC
8
V+
7
6
OUT
5
NC
05577-002
V+
8
OUT B
7
6
–IN B
5
+IN B
5577-003
14
13
12
11
10
9
8
12
–IN D
11
+IN D
10
V–
9
+IN C
05577-091
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
NOTES
1. NC = NO CONNECT.
2. IT IS RECOMMENDED THAT THE EXPOSED PAD
BE CONNECTED TO V–.
5
7
8
–IN B
OUT B6OUT C
–IN C
Figure 5. 16-Lead LFCSP
05577-005
(CP-16-4)
Rev. G
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2006–2011 Analog Devices, Inc. All rights reserved.
ADA4004-1/ADA4004-2/ADA4004-4
TABLE OF CONTENTS
Features.............................................................................................. 1
Applications....................................................................................... 1
General Description......................................................................... 1
Pin Configurations........................................................................... 1
Revision History ...............................................................................2
Specifications..................................................................................... 3
REVISION HISTORY
4/11—Rev. F to Rev. G
Changes to Figure 1.......................................................................... 1
Updated Outline Dimensions....................................................... 12
6/10—Rev. E to Rev. F
Added Differential Input Current to Table 4................................ 5
Changes to Figure 14 and Figure 17............................................... 7
10/09—Rev. D to Rev. E
Changes to Product Title, General Description Section, and
Figure 5 .............................................................................................. 1
Updated Outline Dimensions (RM-8)......................................... 13
Changes to Ordering Guide.......................................................... 14
6/09—Rev. C to Rev. D
Changes to Figure 5.......................................................................... 1
10/08—Rev. B to Rev. C
Added ADA4004-1 and ADA4004-2...............................Universal
Added 5-Lead SOT, 8-Lead SOIC, and 8-Lead MSOP .......Universal
Changes to Features Section.................................................................... 1
Added Figure 1 to Figure 3; Renumbered Sequentially......................1
Changes to General Description Section ..............................................1
Added Table 1; Renumbered Sequentially............................................ 1
Change to Output Voltage Low Parameter, Table 2............................ 3
Changes to Supply Current per Amplifier Parameter, Table 2..........3
Added Phase Margin Parameter, Table 2 ..............................................3
Change to Output Voltage Low Parameter, Table 3............................ 3
Changes to Supply Current per Amplifier Parameter, Table 3..........4
Added Phase Margin Parameter, Table 3 ..............................................4
Changes to Table 4.....................................................................................5
Changes to Thermal Resistance Section................................................5
Changes to Table 5.....................................................................................5
Update Outline Dimensions..................................................................12
Changes to Ordering Guide...................................................................13
Absolute Maximum Ratings ............................................................5
Thermal Resistance.......................................................................5
ESD Caution...................................................................................5
Typical Performance Characteristics..............................................6
Outline Dimensions....................................................................... 12
Ordering Guide .......................................................................... 14
11/07—Rev. A to Rev. B
Changed V
Changes to General Description .....................................................1
Changes to Supply Current per Amplifier .....................................3
Changes to Open-Loop Gain...........................................................4
Changes to Supply Current per Amplifier .....................................4
Changes to Figure 10, Figure 11, Figure 13, and Figure 14..........7
Changes to Figure 26.........................................................................9
Updated Outline Dimensions....................................................... 12
Changes to Ordering Guide.......................................................... 12
7/06—Rev. 0 to Rev. A
Changes to Table 4.............................................................................5
Updated Outline Dimensions....................................................... 12
Changes to Ordering Guide.......................................................... 12
1/06—Revision 0: Initial Version
to VSY..............................................................Universal
S
Rev. G | Page 2 of 16
ADA4004-1/ADA4004-2/ADA4004-4
SPECIFICATIONS
VSY = ±5 V, VCM = 0 V, TA = 25°C, unless otherwise specified.
Table 2.
Parameter Symbol Conditions Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage VOS 40 140 μV
−40°C ≤ T
≤ +125°C
A
Input Bias Current IB 40 85 nA
−40°C ≤ T
≤ +125°C
A
Input Offset Current IOS 40 85 nA
−40°C ≤ T
≤ +125°C
A
Input Voltage Range IVR −3.5 +3.5 V
Common-Mode Rejection Ratio CMRR VCM = −3.0 V to +3.0 V 105 111 dB
Open-Loop Gain AVO R
Offset Voltage Drift ∆VOS/∆T
−40°C ≤ T
= 2 kΩ, V
L
−40°C ≤ T
−40°C ≤ T
≤ +125°C
A
= −2.5 V to +2.5 V 250 400 V/mV
OUT
≤ +125°C
A
≤ +125°C
A
OUTPUT CHARACTERISTICS
Output Voltage High VOH R
Output Voltage Low VOL R
= 2 kΩ to ground 3.7 3.9 V
L
−40°C ≤ T
= 2 kΩ to ground −3.6 −3.55 V
L
−40°C ≤ T
≤ +125°C
A
≤ +125°C
A
Short-Circuit Limit ISC 25 mA
Output Current IO V
−40°C ≤ T
OUT
≤ +125°C
A
= ±3.6 V ±10 mA
POWER SUPPLY
Power Supply Rejection Ratio PSRR
= ±5 V to ±15 V
V
SY
−40°C ≤ T
≤ +125°C
A
Supply Current per Amplifier ISY 2.0 mA
−40°C ≤ T
≤ +125°C
A
DYNAMIC PERFORMANCE
Slew Rate SR RL = 2 kΩ to ground 2.7 V/μs
Gain Bandwidth Product GBP 12 MHz
Phase Margin ΦM 48 Degrees
NOISE PERFORMANCE
Voltage Noise e
f = 0.1 Hz to 10 Hz 0.1 μV p-p
n p-p
Voltage Noise Density en f = 1 kHz 1.8 nV/√Hz
Current Noise Density in f = 10 Hz 3.5 pA/√Hz
Current Noise Density in f = 200 Hz 1.2 pA/√Hz
300 μV
165 nA
100 nA
95 110 dB
170 V/mV
0.7 1 μV/°C
3.4 3.6 V
−3.6 −3.4 V
mA
110 118 dB
110 dB
2.2 mA
Rev. G | Page 3 of 16
ADA4004-1/ADA4004-2/ADA4004-4
VSY = ±15 V, VCM = 0 V, TA = 25°C, unless otherwise specified.
Table 3.
Parameter Symbol Conditions Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage VOS 40 125 μV
−40°C ≤ T
≤ +125°C
A
Input Bias Current IB 40 90 nA
−40°C ≤ T
≤ +125°C
A
Input Offset Current IOS 60 nA
−40°C ≤ T
≤ +125°C
A
Input Voltage Range IVR −12.5 +12.5 V
Common-Mode Rejection Ratio CMRR VCM = −12.5 V to +12.5 V 110 113 dB
Open-Loop Gain AVO R
Offset Voltage Drift ∆VOS/∆T
−40°C ≤ T
= 2 kΩ, V
L
−40°C ≤ T
−40°C ≤ T
≤ +125°C
A
= −12.0 V to +12.0 V 500 1200 V/mV
OUT
≤ +125°C
A
≤ +125°C
A
OUTPUT CHARACTERISTICS
Output Voltage High VOH R
Output Voltage Low VOL R
= 2 kΩ to ground 13.4 13.6 V
L
−40°C ≤ T
= 2 kΩ to ground −13.3 −13.2 V
L
−40°C ≤ T
≤ +125°C
A
≤ +125°C
A
Short-Circuit Limit ISC 25 mA
Output Current IO V
= ±13.6 V ±10 mA
OUT
POWER SUPPLY
Power Supply Rejection Ratio PSRR
= ±5 V to ±15 V
V
SY
−40°C ≤ T
≤ +125°C
A
Supply Current per Amplifier ISY 2.2 mA
−40°C ≤ T
≤ +125°C
A
DYNAMIC PERFORMANCE
Slew Rate SR RL = 2 kΩ to ground 2.7 V/μs
Gain Bandwidth Product GBP 12 MHz
Phase Margin ΦM 48 Degrees
NOISE PERFORMANCE
Voltage Noise e
f = 0.1 Hz to 10 Hz 0.15 μV p-p
n p-p
Voltage Noise Density en f = 1 kHz 1.8 nV/√Hz
Current Noise Density in f = 10 Hz 3.5 pA/√Hz
Current Noise Density in f = 200 Hz 1.2 pA/√Hz
270 μV
165 nA
100 nA
100 104 dB
250 500 V/mV
0.7 1 μV/°C
13.1 13.3 V
−13.25 −13.15 V
110 118 dB
110 dB
2.4 mA
Rev. G | Page 4 of 16
ADA4004-1/ADA4004-2/ADA4004-4
ABSOLUTE MAXIMUM RATINGS
Table 4.
Parameter Rating
Supply Voltage ±18 V or +36 V
Input Voltage V− < VIN < V+
Differential Input Voltage ±V supply
Differential Input Current ±5 mA
Output Short-Circuit Duration to GND Indefinite
Storage Temperature Range −65°C to +150°C
Operating Temperature Range −40°C to +125°C
Junction Temperature Range −65°C to +150°C
Lead Temperature (Soldering 60 sec) 300°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL RESISTANCE
θJA is specified with the device soldered on a circuit board with
its exposed paddle soldered to a pad (if applicable) on a 4-layer
JEDEC standard printed circuit board with zero airflow.
Table 5.
Package Type θJA θ
5-Lead SOT (RJ-5) 230 92 °C/W
8-Lead SOIC (R-8), ADA4004-1 177 53 °C/W
8-Lead SOIC (R-8), ADA4004-2 155 45 °C/W
8-Lead MSOP (RM-8) 186 52 °C/W
14-Lead SOIC_N (R-14) 115 36 °C/W
16-Lead LFCSP_VQ (CP-16-4) 44 31.5 °C/W
Unit
JC
ESD CAUTION
Rev. G | Page 5 of 16
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