AD AD8671ARM Precision very low noise low input bias current operational amplifier Datasheet

PRELIMINARY TECHNICAL DATA
Precision Very Low Noise
Low Input Bias Current
Operational Amplifiers
Preliminary Technical Data
AD8671/AD8672/AD8674
FEATURES
Low Noise: 3nV/√Hz
Wide Bandwidth: 10MHz
Low Input Bias Current: 10nA max.
Low Offset Voltage: 75 µV max.
High open loop gain: 135dB
Low Supply Current: 3 mA/Amp
Dual supply operation: ±5V to ±15V
Unity Gain Stable
No Phase Reversal
APPLICATIONS
PLL filters
Instrumentation
Sensors and Controls
Professional quality audio
GENERAL DESCRIPTION
The AD8671, AD8672 and AD8674 are precision
single, dual and quad amplifiers featuring very low
noise, very low offset voltage and drift, low input bias
current, 10Mhz bandwidth and low power
consumption. Outputs are stable with capacitive loads
of over 100pF. Supply current is less than 3 mA per
amplifier at 30V.
Applications for these amplifiers include high quality
PLL filters, instrumentation--thermocouple, RTD,
strain-bridge and other sensor signal conditioning-precision filters and professional quality audio.
The AD8671, AD8672 and AD8674 are specified
over the extended industrial (-40° to +125°C)
temperature range. The AD8671, single, is available
in the 8-lead MSOP and 8-lead SOIC packages.
The AD8672, dual, is available in the 8-lead MSOP
and 8-lead SOIC packages. The AD8674, quad, is
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
AD8671/AD8672/AD8674
available in 14-lead TSSOP and narrow 14-lead SO
packages. Surface mount devices in TSSOP and
MSOP packages are available in tape and reel only.
PIN CONFIGURATIONS
8-Lead MSOP
(RM-8)
8-Lead SO
(R-8)
AD8672
AD8671
8-Lead SO
(R-8)
14-Lead TSSOP
(RU-14)
AD8671
AD8674
8-Lead MSOP
(RM-8)
14-Lead SO
(R-14)
AD8672
AD8674
One Technology Way, PO Box 9106, Norwood, MA 02062-9106,
USA
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1997
Rev 0.2
2/21/02
PRELIMINARY TECHNICAL DATA
Preliminary Technical Data
AD8671/AD8672/AD8674
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
INPUT CHARACTERISTICS
Offset Voltage
VOS
(@ VS= ±5.0V, VCM = 0V, T A =+25°C unless noted
Conditions
Min
Typ
-40°< T A < +125°C
Max
Units
75
µV
175
µV
Input Bias Current
IB
-10
10
nA
Input Offset Current
IOS
-10
10
nA
Input Voltage Range
Common-Mode Rejection Ratio
VCM = -2V to 2V
-2.5
100
2.5
CMRR
130
V
dB
Large Signal Voltage Gain
AVO
RL = 2 kΩ , Vo= -3V to 3V
1000
6000
Offset Voltage Drift
∆VOS/∆T
-40°< T A < +125°C
OUTPUT CHARACTERISTICS
Output Voltage High
VOH
IL = 1 mA, -40°C to +125°C
Output Voltage Low
VOL
IL = 1 mA, -40°C to +125°C
Output Current
IOUT
POWER SUPPLY
Power Supply Rejection Ratio
PSRR
VS = ±2.5 V to ±15 V
Supply Current/Amplifier
ISY
VO = 0V
0.3
3
SR
Gain Bandwidth Product
GBP
NOISE PERFORMANCE
Voltage Noise
en p-p
0.1 Hz to 10 Hz
Voltage Noise Density
en
Current Noise Density
in
AD8671/AD8672/AD8674
RL =2 kΩ
V
-3
V
±10
mA
130
dB
3000
-40°<TA < +125°C
DYNAMIC PERFORMANCE
Slew Rate
µV/°C
3.8
-3.9
110
V/mV
1
3500
µA
4000
µA
4
V/µs
10
MHz
0.08
µV p-p
f = 1 kHz
3
nV/√Hz
f = 1 kHz
0.2
pA/√Hz
Rev0.2 2/21/02
PRELIMINARY TECHNICAL DATA
Preliminary Technical Data
AD8671/AD8672/AD8674
ELECTRICAL CHARACTERISTICS
(@ VS= ±15V, VCM = 0V, T A =+25°C unless noted)
Parameter
Symbol
Conditions
Min
Typ
Max
Units
INPUT CHARACTERISTICS
Offset Voltage
VOS
75
µV
Input Bias Current
IB
-10
175
µV
10
nA
Input Offset Current
IOS
-10
10
nA
Input Voltage Range
Common-Mode Rejection Ratio
CMRR
VCM = -12V to 12V
-12.5
110
12.5
140
V
dB
Large Signal Voltage Gain
AVO
RL = 2 kΩ , Vo = -10V to 10V
1000
6000
V/mV
Offset Voltage Drift
∆VOS/∆T
-40°< T A < +125°C
OUTPUT CHARACTERISTICS
Output Voltage High
VOH
IL = 10 mA, -40°C to +125°C
Output Voltage Low
VOL
IL = 10 mA, -40°C to +125°C
Output Current
IOUT
±20
mA
Short Circuit Current
ISC
±30
mA
POWER SUPPLY
Power Supply Rejection Ratio
PSRR
VS = ±2.5 V to ±15 V
130
dB
Supply Current/Amplifier
ISY
VO = 0V
-40°< T A < +125°C
0.3
-10
13.5
-13.5
110
3000
-40°<TA < +125°C
DYNAMIC PERFORMANCE
Slew Rate
SR
Gain Bandwidth Product
GBP
NOISE PERFORMANCE
Voltage Noise
en p-p
0.1 Hz to 10 Hz
Voltage Noise Density
en
Current Noise Density
in
AD8671/AD8672/AD8674
RL =2 kΩ
µV/°C
1
V
10
V
3500
µA
4000
µA
4
V/µs
10
MHz
0.08
µV p-p
f = 1 kHz
3
nV/√Hz
f = 1 kHz
0.2
pA/√Hz
Rev0.2 2/21/02
PRELIMINARY TECHNICAL DATA
Preliminary Technical Data
AD8671/AD8672/AD8674
ABSOLUTE MAXIMUM RATINGS 1
Package Type
θJA
θJC
Units
Supply voltage ............................................................................36V
Input Voltage....................................................................Vs- to Vs+
Differential Input Voltage ......................................................... TBD
Output Short-Circuit Duration .......................................... Indefinite
Storage Temperature Range
RM, R, RU Package .......................................-65°C to +150°C
Operating Temperature Range
AD8671/AD8672/AD8674............................-40°C to +125°C
Junction Temperature Range
RM, R, RU Package .......................................-65°C to +150°C
Lead Temperature Range (Soldering, 60 Sec)........................+300°C
8-pin MSOP (RM)
8-Pin SOIC (R)
14-Pin TSSOP (RU)
14-Pin SOIC (R)
190
158
180
120
44
43
35
36
°C/W
°C/W
°C/W
°C/W
NOTES
1 Absolute maximum ratings apply at 25°C, unless otherwise noted.
2 θ is specified for the worst case conditions, i.e., θ is specified for device soldered
JA
JA
in circuit board for surface mount packages.
ORDERING GUIDE
Model
AD8671ARM
AD8671AR
AD8672ARM
AD8672AR
AD8674ARU
AD8674AR
Temperature Range
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
AD8671/AD8672/AD8674
Package Description
8-Pin MSOP
8-Pin SOIC
8-Pin MSOP
8-Pin SOIC
14-Pin TSSOP
14-Pin SOIC
Package Option
RM-8
R-8
RM-8
R-8
RU-14
R-14
Rev0.2 2/21/02
Similar pages