ANALOG DEVICES ADA 4000-4 ARZ Datasheet
Low Cost, Precision JFET
O
Input Operational Amplifiers
Data Sheet
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
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.
S
ADA4000-1/ADA4000-2/ADA4000-4
PIN CONFIGURATIONS
UT
1
ADA4000-1
TOP VIEW
V–
2
(Not to S cale)
+IN
3
Fig
ure 1. 5-Lead TSOT (UJ-5)
NC
1
–IN
2
ADA4000-1
+IN
OUT A
–IN A
+IN A
OUT A
–IN A
+IN A
OUT A
–IN A
+IN A
+IN B
–IN B
OUT B
OUT A
–IN A
+IN A
+IN B
–IN B
OUT B
Figure 6.
TOP VIEW
3
(Not to Scale)
4
V–
NC = NO CONN E CT
ure 2. 8-Lead SOIC (R-8)
Fig
1
2
ADA4000-2
TOP VIEW
3
(Not to S cale)
–V
4
Fig
ure 3. 8-Lead SOIC (R-8)
1
2
ADA4000-2
TOP VIEW
3
(Not to Scale)
4
–V
Fig
ure 4. 8-Lead MSOP (RM-8)
1
2
3
ADA4000-4
4
+V
TOP VIEW
(Not to Scale)
5
6
7
Figure 5.
14-Lead SOIC (R-14)
1
2
3
ADA4000-4
TOP VIEW
4
+V
(Not to Scale)
5
6
7
14-Lead TSSOP (RU-14)
8
7
6
5
5
4
8
7
6
5
8
7
6
5
14
13
12
11
10
14
13
12
11
10
9
8
9
8
V+
–IN
NC
V+
OUT
NC
+V
OUT B
–IN B
+IN B
+V
OUT B
–IN B
+IN B
OUT D
–IN D
+IN D
–V
+IN C
–IN C
OUT C
OUT D
–IN D
+IN D
–V
+IN C
–IN C
OUT C
05791-001
05791-002
05791-027
05791-028
05791-029
05791-030
Rev. B Document Feedback
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Technical Support www.analog.com
ADA4000-1/ADA4000-2/ADA4000-4 Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Pin Configurations ........................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Electrical Characteristics ............................................................. 3
Absolute Maximum Ratings ............................................................ 5
Thermal Resistance ...................................................................... 5
REVISION HISTORY
3/16—Rev. A to Rev. B
Change to Figure 12 Caption .......................................................... 6
Changes to Output Phase Reversal and Input Noise Section
and Capacitive Load Drive Section .............................................. 10
Updated Outline Dimensions ....................................................... 13
3/09—Rev. 0 to Rev. A
Changes to Input Voltage Range Parameter ................................. 4
Changes to Common-Mode Rejection Ration Parameter .......... 4
Updated Outline Dimensions ....................................................... 12
Changes to Ordering Guide .......................................................... 14
5/07—Revision 0: Initial Version
Power Sequencing .........................................................................5
ESD Caution...................................................................................5
Typical Performance Characteristics ..............................................6
Applications Information .............................................................. 10
Output Phase Reversal and Input Noise ................................. 10
Capacitive Load Drive ............................................................... 10
Settling Time ............................................................................... 11
Outline Dimensions ....................................................................... 12
Ordering Guide .......................................................................... 14
Rev. B | Page 2 of 16
Data Sheet ADA4000-1/ADA4000-2/ADA4000-4
Parameter
Symbol
Test Conditions/Comments
Min
Typ
Max
Unit
−40°C ≤ TA ≤ +125°C
500
pA
Offset Voltage Drift
ΔVOS/ΔT
−40°C ≤ TA ≤ +125°C
2
µV/°C
Current Noise Density
in
f = 1 kHz
0.01 pA/√Hz
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
VS = ±15.0 V, VCM = VS/ 2 V, TA = 25°C, unless otherwise specified.
Table 1.
INPUT CHARACTERISTICS
Offset Voltage VOS 0.2 1.70 mV
−40°C ≤ TA ≤ +125°C 3.0 mV
Input Bias Current IB 5 40 pA
−40°C ≤ TA ≤ +85°C 170 pA
−40°C ≤ TA ≤ +125°C 4.5 nA
Input Offset Current IOS 2 40 pA
−40°C ≤ TA ≤ +85°C 80 pA
Input Voltage Range IVR −11 +15 V
Common-Mode Rejection Ratio CMRR −11 V ≤ VCM ≤ +15 V 80 100 dB
−40°C ≤ TA ≤ +125°C 100 dB
Open-Loop Gain AVO RL = 2 kΩ, VO = ±10 V 100 110 dB
OUTPUT CHARACTERISTICS
Output Voltage High VOH RL = 2 kΩ to ground 13.60 13.90 V
−40°C ≤ TA ≤ +125°C 13.40 V
Output Voltage Low VOL RL = 2 kΩ to ground −13.4 −13.0 V
−40°C ≤ TA ≤ +125°C −12.80 V
Short-Circuit Current ISC ±28 mA
POWER SUPPLY
Power Supply Rejection Ratio PSRR VS = ±4.0 V to ±18.0 V 82 92 dB
Supply Current/Amplifier ISY 1.35 1.65 mA
−40°C ≤ TA ≤ +125°C 1.80 mA
DYNAMIC PERFORMANCE
Slew Rate SR VI = 10 V, RL = 2 kΩ 20 V/µs
Gain Bandwidth Product GBP 5 MHz
Phase Margin ΦM 60 Degrees
NOISE PERFORMANCE
Voltage Noise e
Voltage Noise Density en f = 1 kHz 16 nV/√Hz
0.1 Hz to 10 Hz 1 µV p-p
n p-p
INPUT IMPEDANCE
Differential Mode (R||C)
Common Mode (R||C)
IN-DIFF
INCM
10||4 GΩ||pF
103||5.5 GΩ||pF
Rev. B | Page 3 of 16
ADA4000-1/ADA4000-2/ADA4000-4 Data Sheet
Input Bias Current
IB 5 40
pA
−40°C ≤ TA ≤ +125°C
500
pA
Output Voltage Low
VOL
RL = 2 kΩ to ground
−3.45
−3.20
V
Differential Mode
(R||C)
10||4
GΩ||pF
VS = ±5 V, VCM = VS/ 2 V, TA = 25°C, unless otherwise specified.
Table 2.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage VOS 0.20 1.70 mV
−40°C ≤ TA ≤ +125°C 3.0 mV
−40°C ≤ TA ≤ +85°C 170 pA
−40°C ≤ TA ≤ +125°C 3 nA
Input Offset Current IOS 2 40 pA
−40°C ≤ TA ≤ +85°C 80 pA
Input Voltage Range IVR −1.0 +5.0 V
Common-Mode Rejection Ratio CMRR −1.0 V ≤ VCM ≤ +5.0 V 72 80 dB
−40°C ≤ TA ≤ +125°C 80 dB
Open-Loop Gain AVO RL = 2 kΩ, VO = ±2.5 V 106 114 dB
Offset Voltage Drift ΔVOS/ΔT −40°C ≤ TA ≤ +125°C 2 µV/°C
OUTPUT CHARACTERISTICS
Output Voltage High VOH RL = 2 kΩ to ground 4.0 4.20 V
−40°C ≤ TA ≤ +125°C 3.80 V
−40°C ≤ TA ≤ +125°C −3.00 V
Short-Circuit Current ISC ±28 mA
POWER SUPPLY
Supply Current/Amplifier ISY 1.25 1.65 mA
−40°C ≤ TA ≤ +125°C 1.80 mA
DYNAMIC PERFORMANCE
Slew Rate SR VI = 10 V, RL = 2 kΩ 20 V/µs
Gain Bandwidth Product GBP 5 MHz
Phase Margin ΦM 55 Degrees
NOISE PERFORMANCE
Voltage Noise e
Voltage Noise Density en f = 1 kHz 16
Current Noise Density in f = 1 kHz 0.01
0.1 Hz to 10 Hz 1 µV p-p
n p-p
nV/√Hz
pA/√Hz
INPUT IMPEDANCE
IN-DIFF
Common Mode (R||C)
INCM
103||5.5 GΩ||pF
Rev. B | Page 4 of 16
Data Sheet ADA4000-1/ADA4000-2/ADA4000-4
Input Voltage
±V supply
8-Lead SOIC (R-8)
112.38
61.6
°C/W
8-Lead MSOP (RM-8)
141.9
43.7
°C/W
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter Rating
Supply Voltage ±18 V
THERMAL RESISTANCE
θJA is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
Differential Input Voltage ±V supply
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, 10 sec) 300°C
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
Table 4. Thermal Resistance
Package Type θJA θJC Unit
5-Lead TSOT (UJ-5) 172.92 61.76 °C/W
14-Lead SOIC (R-14) 88.2 56.3 °C/W
14-Lead TSSOP (RU-14) 114 23.3 °C/W
POWER SEQUENCING
The operational amplifier supply voltages must be established
simultaneously with, or before, any input signals are applied. If
this is not possible, the input current must be limited to 10 mA.
ESD CAUTION
Rev. B | Page 5 of 16
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