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
S
Wide bandwidth: 5 MHz
Low Cost, Precision JFET
Input Operational Amplifiers
ADA4000-1/ADA4000-2/ADA4000-4
PIN CONFIGURATIONS
OUT
1
V–
2
+IN
3
ADA4000-1
TOP VIEW
(Not to Scale)
5
V+
4
–IN
Figure 1. 5-Lead TSOT (UJ-5)
NC
1
–IN
2
+IN
3
V–
4
8
NC
V+
OUT
05791-002
05791-030
ADA4000-1
TOP VIEW
(Not to Scale)
7
6
5
NC
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
NC = NO CONNECT
Figure 2. 8-Lead SOIC (R-8)
OUT A
1
–IN A
2
+IN A
3
–V
4
8
+V
OUT B
05791-027
ADA4000-2
TOP VIEW
(Not to Scale)
7
6
5
–IN B
+IN B
Figure 3. 8-Lead SOIC (R-8)
OUT A
1
–IN A
2
+IN A
3
–V
4
8
+V
OUT B
05791-028
05791-029
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.
ADA4000-2
TOP VIEW
(Not to Scale)
7
6
5
–IN B
+IN B
Figure 4. 8-Lead MSOP (RM-8)
OUT A
1
–IN A
2
+IN A
3
+V
4
+IN B
5
–IN B
6
OUT B
7
14
13
OUT D
–IN D
+IN D
–V
+IN C
–IN C
OUT C
ADA4000-4
TOP VIEW
(Not to Scale)
12
11
10
9
8
Figure 5. 14-Lead SOIC (R-14)
OUT A
1
–IN A
2
+IN A
3
+V
4
+IN B
5
–IN B
6
OUT B
7
14
OUT D
13
–IN D
ADA4000-4
TOP VIEW
(Not to Scale)
12
+IN D
11
–V
10
+IN C
9
8
–IN C
OUT C
Figure 6. 14-Lead TSSOP (RU-14)
Rev. B
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Trademarks and registered trademarks are the property of their respective owners.
05791-001
ADA4000-1/ADA4000-2/ADA4000-4
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
Data Sheet
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
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
Rev. B | Page 2 of 16
Data Sheet
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
V
S
= ±15.0 V, V
CM
= V
S
/2 V, T
A
= 25°C, unless otherwise specified.
Table 1.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Input Bias Current
Symbol
V
OS
−40°C ≤ T
A
≤ +125°C
I
B
−40°C ≤ T
A
≤ +85°C
−40°C ≤ T
A
≤ +125°C
Input Offset Current
I
OS
−40°C ≤ T
A
≤ +85°C
−40°C ≤ T
A
≤ +125°C
Input Voltage Range
Common-Mode Rejection Ratio
Open-Loop Gain
Offset Voltage Drift
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Current
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current/Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
Phase Margin
NOISE PERFORMANCE
Voltage Noise
Voltage Noise Density
Current Noise Density
INPUT IMPEDANCE
Differential Mode
Common Mode
IVR
CMRR
A
VO
ΔV
OS
/ΔT
V
OH
V
OL
I
SC
PSRR
I
SY
−11 V ≤ V
CM
≤ +15 V
−40°C ≤ T
A
≤ +125°C
R
L
= 2 kΩ, V
O
= ±10 V
−40°C ≤ T
A
≤ +125°C
R
L
= 2 kΩ to ground
−40°C ≤ T
A
≤ +125°C
R
L
= 2 kΩ to ground
−40°C ≤ T
A
≤ +125°C
ADA4000-1/ADA4000-2/ADA4000-4
Test Conditions/Comments
Min
Typ
0.2
5
Max
1.70
3.0
40
170
4.5
40
80
500
+15
Unit
mV
mV
pA
pA
nA
pA
pA
pA
V
dB
dB
dB
µV/°C
V
V
V
V
mA
dB
mA
mA
V/µs
MHz
Degrees
µV p-p
nV/√Hz
pA/√Hz
GΩ||pF
GΩ||pF
2
−11
80
100
100
100
110
2
13.90
−13.4
±28
−13.0
−12.80
13.60
13.40
V
S
= ±4.0 V to ±18.0 V
−40°C ≤ T
A
≤ +125°C
82
92
1.35
1.65
1.80
SR
GBP
Φ
M
e
n p-p
e
n
i
n
(R||C)
IN-DIFF
(R||C)
INCM
V
I
= 10 V, R
L
= 2 kΩ
20
5
60
1
16
0.01
10||4
10
3
||5.5
0.1 Hz to 10 Hz
f = 1 kHz
f = 1 kHz
Rev. B | Page 3 of 16
ADA4000-1/ADA4000-2/ADA4000-4
V
S
= ±5 V, V
CM
= V
S
/2 V, T
A
= 25°C, unless otherwise specified.
Table 2.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Input Bias Current
Symbol
V
OS
−40°C ≤ T
A
≤ +125°C
I
B
−40°C ≤ T
A
≤ +85°C
−40°C ≤ T
A
≤ +125°C
Input Offset Current
I
OS
−40°C ≤ T
A
≤ +85°C
−40°C ≤ T
A
≤ +125°C
Input Voltage Range
Common-Mode Rejection Ratio
Open-Loop Gain
Offset Voltage Drift
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Current
POWER SUPPLY
Supply Current/Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
Phase Margin
NOISE PERFORMANCE
Voltage Noise
Voltage Noise Density
Current Noise Density
INPUT IMPEDANCE
Differential Mode
Common Mode
IVR
CMRR
A
VO
ΔV
OS
/ΔT
V
OH
V
OL
I
SC
I
SY
−40°C ≤ T
A
≤ +125°C
SR
GBP
Φ
M
e
n p-p
e
n
i
n
(R||C)
IN-DIFF
(R||C)
INCM
V
I
= 10 V, R
L
= 2 kΩ
20
5
55
1
16
0.01
10||4
10
3
||5.5
−1.0 V ≤ V
CM
≤ +5.0 V
−40°C ≤ T
A
≤ +125°C
R
L
= 2 kΩ, V
O
= ±2.5 V
−40°C ≤ T
A
≤ +125°C
R
L
= 2 kΩ to ground
−40°C ≤ T
A
≤ +125°C
R
L
= 2 kΩ to ground
−40°C ≤ T
A
≤ +125°C
−1.0
72
106
80
80
114
2
4.20
−3.45
±28
1.25
1.65
1.80
−3.20
−3.00
2
5
Test Conditions/Comments
Min
Typ
0.20
Max
1.70
3.0
40
170
3
40
80
500
+5.0
Data Sheet
Unit
mV
mV
pA
pA
nA
pA
pA
pA
V
dB
dB
dB
µV/°C
V
V
V
V
mA
mA
mA
V/µs
MHz
Degrees
µV p-p
nV/√Hz
pA/√Hz
GΩ||pF
GΩ||pF
4.0
3.80
0.1 Hz to 10 Hz
f = 1 kHz
f = 1 kHz
Rev. B | Page 4 of 16
Data Sheet
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
Supply Voltage
Input Voltage
Differential Input Voltage
Output Short-Circuit Duration to GND
Storage Temperature Range
Operating Temperature Range
Junction Temperature Range
Lead Temperature (Soldering, 10 sec)
Rating
±18 V
±V supply
±V supply
Indefinite
−65°C to +150°C
−40°C to +125°C
−65°C to +150°C
300°C
ADA4000-1/ADA4000-2/ADA4000-4
THERMAL RESISTANCE
θ
JA
is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
Table 4. Thermal Resistance
Package Type
5-Lead TSOT (UJ-5)
8-Lead SOIC (R-8)
8-Lead MSOP (RM-8)
14-Lead SOIC (R-14)
14-Lead TSSOP (RU-14)
θ
JA
172.92
112.38
141.9
88.2
114
θ
JC
61.76
61.6
43.7
56.3
23.3
Unit
°C/W
°C/W
°C/W
°C/W
°C/W
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.
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
