Datasheet

3
®
INA145
INA145UA
PARAMETER CONDITION MIN TYP MAX UNITS
OFFSET VOLTAGE, V
O
RTI
(1, 2)
Input Offset Voltage V
OS
V
CM
= V
O
= 2.5V ±0.35 ±1mV
vs Temperature ∆V
OS
/∆T See Typical Curve
vs Power Supply Rejection Ratio PSRR V
S
= ±1.35V to ±18V ±20 ±60 µV/°C
vs Time ±0.3 µV/mo
Offset Voltage, V
01
RTI
(1, 2)
±0.55 mV
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
(3)
V
CM
V
IN
+ – V
IN
– = 0V, V
O
= 2.5V –2.5 5.5 V
Common-Mode Rejection Ratio CMRR V
CM
= –2.5V to +5.5V, R
S
= 0Ω 76 86 dB
Over Temperature 80 dB
INPUT BIAS CURRENT
(2)
Bias Current I
B
±50 nA
Offset Current I
OS
±5nA
INPUT IMPEDANCE
Differential (non-inverting input) 80 kΩ
Differential (inverting input) 27 kΩ
Common-Mode 40 kΩ
NOISE RTI
(1, 4)
Voltage Noise, f = 0.1Hz to 10Hz 2 µVp-p
Voltage Noise Density, f = 1kHz e
n
90 nV/√Hz
GAIN
G = 1 to 1000 V/V
Gain Equation G = 1 + R
G2
/R
G1
V/V
Initial
(1)
1V/V
Gain Error R
L
= 100kΩ, V
O
= 0.15V to 4V, G = 1 ±0.01 ±0.1 %
vs Temperature R
L
= 100kΩ, V
O
= 0.25V to 4V, G = 1 ±2 ±10 ppm /°C
R
L
= 10kΩ, V
O
= 0.3V to 3.75V, G = 1 ±0.01 ±0.1 %
vs Temperature R
L
= 10kΩ, V
O
= 0.5V to 3.75V, G = 1 ±2 ±10 ppm /°C
Nonlinearity R
L
= 10kΩ, V
O
= +0.3 to +3.75, G = 1 ±0.001 ±0.005 % of FS
FREQUENCY RESPONSE
Small Signal Bandwidth G = 0.1 500 kHz
G = 1 50 kHz
Slew Rate 0.45 V/µs
Settling Time, 0.1% G = 1, 10V Step 40 µs
0.01% G = 1, 10V Step 90 µs
Overload Recovery 50% Input Overload 40 µs
OUTPUT, V
O
Voltage Output R
L
= 100kΩ, G = 1 0.15 4 V
Over Temperature R
L
= 100kΩ, G = 1 0.25 4 V
R
L
= 10kΩ, G = 1 0.3 3.75 V
Over Temperature R
L
= 10kΩ, G = 1 0.5 3.75 V
Short-Circuit Current Continuous to Common ±15 mA
Capacitive Load Stable Operation 1000 pF
POWER SUPPLY
Specified Voltage Range, Single Supply +4.5 +36 V
Operating Voltage Range +2.7 +36 V
Quiescent Current V
IN
= 0, I
O
= 0 550 700 µA
Over Temperature 800 µA
TEMPERATURE RANGE
Specified Range –40 +85 °C
Operating Range –55 +125 °C
Storage Range –55 +125 °C
Thermal Resistance
θ
JA
150 °C/W
NOTES: (1) Referred to input pins (V
IN
+ and V
IN
–), Gain = 1V/V. Specified with 10kΩ in feedback of A2. (2) Input offset voltage specification includes effects of
amplifier’s input bias and offset currents. (3) Common-mode voltage range with single supply is 2(V+) – 2V – V
REF
to –V
REF
. (4) Includes effects of input current
noise and thermal noise contribution of resistor network.
SPECIFICATIONS: V
S
= +5V Single Supply
Boldface limits apply over the specified temperature range, T
A
= –40°C to +85°C
At T
A
= +25°C, G = 1, R
L
= 10kΩ connected to ground and ref pin connected to 2.5V unless otherwise noted.