Burr Brown INA148UA, INA148UA-2K5 Datasheet
®
INA148
©1999 Burr-Brown Corporation PDS-1579A Printed in U.S.A.December, 1999
FEATURES
● HIGH COMMON-MODE VOLTAGE:
+75V at VS = +5V
±200V at VS = ±15V
● FIXED DIFFERENTIAL GAIN = 1V/V
● LOW QUIESCENT CURRENT: 260µA
● WIDE SUPPLY RANGE:
Single Supply: 2.7V to 36V
Dual Supplies: ±1.35V to ±18V
● LOW GAIN ERROR: 0.075% max
● LOW NONLINEARITY: 0.002% max
● HIGH CMR: 86dB
● SO-8 PACKAGE
±200V Common-Mode Voltage
DIFFERENCE AMPLIFIER
DESCRIPTION
The INA148 is a precision, low-power, unity-gain
difference amplifier with a high common-mode input
voltage range. It consists of a monolithic precision
bipolar op amp with a thin-film resistor network.
The on-chip resistors are laser trimmed for an accurate 1V/V differential gain and high common-mode
rejection. Excellent temperature tracking of the resistor network maintains high gain accuracy and common-mode rejection over temperature. The INA148
will operate on single or dual supplies.
The INA148 is available in a small SO-8 surfacemount package and it is specified for the –40°C to
+85°C extended industrial temperature range.
APPLICATIONS
● CURRENT SHUNT MEASUREMENTS
● DIFFERENTIAL SENSOR AMPLIFIERS
● LINE RECEIVERS
● BATTERY POWERED SYSTEMS
● AUTOMOTIVE INSTRUMENTATION
● STACKED CELL MONITORS
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
For most current data sheet and other product
information, visit www.burr-brown.com
INA148
1MΩ 50kΩ
52.6316kΩ
50kΩ
2.7778kΩ
1MΩ
V+
V
IN
7
3
2
6
41
A1
INA148
V– Ref
V
O
+
V
IN
–
2
®
INA148
SPECIFICATIONS: VS = ±5V to ±15V Dual Supplies
At TA = +25°C, RL = 10kΩ connected to ground and Ref pin connected to ground, unless otherwise noted.
INA148UA
PARAMETER CONDITIONS MIN TYP MAX UNITS
OFFSET VOLTAGE (V
O
) RTI
(1)(2)
Input Offset Voltage V
OS
VS = ±15V, V
CM
= 0V ±1 ±5mV
VS = ±5V, V
CM
= 0V ±1 ±5mV
Drift ∆V
OS
/∆T At TA = –40°C to +85°C ±10 µV°C
vs Power Supply PSRR V
S
= ±1.35V to ±18V, V
CM
= 0V ±50 ±400 µV/V
INPUT VOLTAGE RANGE
Common-Mode Voltage Range V
CM
VS = ±15V, (V
IN
+
) – (V
IN
–
) = 0V –200 +200 V
VS = ±5V, (V
IN
+
) – (V
IN
–
) = 0V –100 +80 V
Common-Mode Rejection CMRR
VS = ±15V, V
CM
= –200V to +200V, RS = 0Ω
70 86 dB
VS = ±5V, V
CM
= –100V to +80V, RS = 0Ω
70 86 dB
INPUT IMPEDANCE
Differential 2MΩ
Common Mode 1MΩ
NOISE RTI
(1)(3)
Voltage Noise, f = 0.1Hz to 10Hz e
n
17 µVp-p
Voltage Noise Density, f = 1kHz 880 nV/√Hz
GAIN
Initial
(1)
1 V/V
Gain Error V
O
= (V–) + 0.5 to (V+) – 1.5 ±0.01 ±0.075 %
vs Temperature ±3 ±10 ppm/°C
Nonlinearity
VS = ±15V, VO = (V–) + 0.5 to (V+) – 1.5
±0.001 ±0.002 % of FSR
VS = ±5V, VO = (V–) + 0.5 to (V+) – 1.5
±0.001 % of FSR
FREQUENCY RESPONSE
Small Signal Bandwidth 100 kHz
Slew Rate 1V/µs
Settling Time: 0.1% V
S
= ±15V, 10V Step 21 µs
0.01% V
S
= ±15V, 10V Step 25 µs
0.1% V
S
= ±5V, 6V Step 21 µs
0.01% VS = ±5V, 6V Step 25 µs
Overload Recovery 50% Input Overload 24 µs
OUTPUT (V
O
)
Voltage Output R
L
= 100kΩ (V–) + 0.25 (V+) – 1 V
R
L
= 10kΩ (V–) + 0.5 (V+) – 1.5 V
Output Current I
O
Short-Circiuit Current Continuous to Common ±13 mA
Capacitive Load Stable Operation 10 nF
POWER SUPPLY
Operating Range, Dual Supplies ±1.35 ±18 V
Quiescent Current V
IN
= 0, IO = 0 ±260 ±300 µA
TEMPERATURE RANGE
Specified –40 85 °C
Operating –55 125 °C
Storage –55 125 °C
Thermal Resistance
θ
JA
SO-8 Surface Mount 150 °C/W
NOTES: (1) Overall difference amplifier configuration. Referred to input pins (V
IN
+
and V
IN
–
), gain = 1V/V (2) Input offset voltage specification includes effects of
amplifier's input bias and offset currents. (3) Includes effects of input current noise and thermal noise contribution of resistor network.
3
®
INA148
SPECIFICATIONS: VS = +5V Single Supply
At TA = +25°C, RL = 10kΩ connected to VS/2 and Ref pin connected to VS/2, unless otherwise noted.
INA148UA
PARAMETER CONDITIONS MIN TYP MAX UNITS
OFFSET VOLTAGE (V
O
) RTI
(1)(2)
Input Offset Voltage V
OS
V
CM
= VS/2 ±1 ±5mV
Drift ∆VOS/∆T At TA = –40°C to +85°C ±10 µV°C
vs Power Supply PSRR V
S
= +2.7V to +36V, V
CM
= VS/2 ±50 ±400 µV/V
INPUT VOLTAGE RANGE
Common-Mode Voltage Range V
CM
(V
IN
+
) – (V
IN
–
) = 0V, V
REF
= 0.25V –4 +75 V
(V
IN
+
) – (V
IN
–
) = 0V, V
REF
= VS/2 –47.5 +32.5 V
Common-Mode Rejection CMRR V
CM
= –47.5V to +32.5V, RS = 0Ω 70 86 dB
INPUT IMPEDANCE
Differential 2MΩ
Common Mode 1MΩ
NOISE RTI
(1)(3)
Voltage Noise, f = 0.1Hz to 10Hz e
n
17 µVp-p
Voltage Noise Density, f = 1kHz 880 nV/√Hz
GAIN
Initial
(1)
1 V/V
Gain Error V
O
= +0.5V to +3.5V ±0.01 ±0.075 %
vs Temperature ±3 ±10 ppm/°C
Nonlinearity V
O
= +0.5V to +3.5V ±0.001 % of FSR
FREQUENCY RESPONSE
Small Signal Bandwidth 100 kHz
Slew Rate 1V/µs
Settling Time: 0.1% V
S
= +5V, 3V Step 21 µs
0.01% V
S
= +5V, 3V Step 25 µs
Overload Recovery 50% Input Overload 13 µs
OUTPUT (V
O
)
Voltage Output R
L
= 100kΩ (V–) + 0.25 (V+) – 1 V
RL = 10kΩ (V–) + 0.5 (V+) – 1.5 V
Output Current I
O
Short-Circiuit Current Continuous to Common ±8mA
Capacitive Load Stable Operation 10 nF
POWER SUPPLY
Operating Range, Single Supply +2.7 +36 V
Quiescent Current V
IN
= 0, IO = 0 260 300 µA
TEMPERATURE RANGE
Specified –40 85 °C
Operating –55 125 °C
Storage –55 125 °C
Thermal Resistance
θ
JA
SO-8 Surface Mount 150 °C/W
NOTES: (1) Overall difference amplifier configuration. Referred to input pins (V
IN
+
and V
IN
–
), gain = 1V/V (2) Input offset voltage specification includes effects of
amplifier's input bias and offset currents. (3) Includes effects of input current noise and thermal noise contribution of resistor network.
4
®
INA148
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
Supply Voltage, V+ to V– .................................................................... 36V
Signal Input Terminals, Continuous ................................................±200V
Peak (0.1s) ............................................... ±500V
Output Short Circuit to GND Duration .................................... Continuous
Operating Temperature .................................................. –55°C to +125°C
Storage Temperature .....................................................–55°C to +125°C
Junction Temperature .................................................................... +150°C
Lead Temperature (soldering, 10s) ............................................... +300°C
NOTE: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability. These are stress ratings only, and functional operation of the
device at these or any other conditions beyond those specified is not implied.
ABSOLUTE MAXIMUM RATINGS
(1)
PACKAGE SPECIFIED
DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT
PRODUCT PACKAGE NUMBER RANGE MARKING NUMBER
(1)
MEDIA
INA148UA SO-8 182 –40°C to +85°C INA148UA INA148UA Rails
"""""INA148UA/2K5 Tape and Reel
NOTE: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces
of “INA148UA/2K5” will get a single 2500-piece Tape and Reel.
PACKAGE/ORDERING INFORMATION
PIN CONFIGURATION
TOP VIEW SO-8
Ref
–In
+In
V–
NC
V+
Out
NC
1
2
3
4
8
7
6
5
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