LMP8278

SNAS575A – FEBRUARY 2012 – REVISED MARCH 2013

www.ti.com

5.0V Electrical Characteristics

(1)

PARAMETER

TEST CONDITIONS

UNIT

Overall Performance (From –IN (pin 1) and +IN (pin 8) to OUT (pin 5) with pins A1 (pin 3) and A2 (pin 4) connected)

Supply Current

0.3

0.4

0.55

mA

Total Gain

13.93

14

14.07

V/V

13.86

14

14.14

Gain Drift

±2

±25

ppm/°C

SR

Slew Rate

0.7

V/

μs

BW

Bandwidth

90

kHz

Input Offset Voltage

±0.25

±2

mV

±2.5

±15

μV/°C

Input Referred Voltage Noise

0.1 Hz

− 10 Hz, 6–Sigma

11

Spectral Density, 1 kHz

285

nV/

√Hz

PSRR

Power Supply Rejection Ratio

DC,4.5V

70

80

dB

Preamplifier (From input pins –IN (pin 1) and +IN (pin 8) to A1 (pin 3))

Input Impedance Common Mode

100

125

k

Ω

60

85

k

Ω

Input Offset Voltage

±0.25

±2

mV

±2.5

±15

μV/°C

DC CMRR

DC Common Mode Rejection Ratio

80

90

dB

AC CMRR

AC Common Mode Rejection Ratio

f = 1 kHz

90

dB

f = 10 kHz

85

CMVR

Input Common Mode Voltage Range

for 80 dB CMRR

−2

40

V

Gain

6.93

7.0

7.07

V/V

Output Impedance Filter Resistor

97

100

103

k

Ω

Output Impedance Filter Resistor Drift

20

±100

ppm/°C

Preamplifier Output Voltage Swing

4

10

mV

4.80

4.95

V

Output Buffer (From A2 (pin 4) to OUT (pin 5))

Input Offset Voltage

0V

±0.25

±2

mV

Gain

1.98

2

2.02

V/V

±20

pA

±20

nA

7

20

mV

4.80

4.99

V

15

30

mV

4.75

4.95

V

(1)

The Electrical Characteristics table lists ensured specifications under the listed Recommended Operating Conditions except as

otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and

are not ensured.

(2)

Datasheet min/max specification limits are ensured by test, unless otherwise noted.

(3)

product characterization and are not ensured.

(4)

(5)

Specification is ensured by design and is not tested in production.

(6)

Positive current corresponds to current flowing into the device.

(7)

For this test input is driven from A1 stage.

(8)

4

Submit Documentation Feedback

Copyright © 2012–2013, Texas Instruments Incorporated

Product Folder Links: LMP8278