LMP7312_14 datasheet(8/29 Pages) NSC

Part #	LMP7312

Description	Precision SPI-Programmable AFE with Differential/Single-Ended Input/Output

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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8 / 29 page

FREQUENCY (Hz)

100

10

1

10

100

1k

10k

100k

1M

1s/DIV

TCVOS (éV/°C)

15

12

9

6

3

0

-2.0 -1.5 -1.0 -0.5 0.0

0.5

1.0

1.5

2.0

Nulling Switch Mode

VOCM = 1V

LMP7312

SNOSB32B – MARCH 2010 – REVISED MARCH 2013

www.ti.com

Typical Performance Characteristics

Unless otherwise specified, TA = 25°C, V

+ = 5V, V

IO = 5V, V

− = 0V, V

CM_ATT=(+VIN+(-VIN))/2, VCM_AMP=(+IN+(-IN))/2. RL =

10k

Ω, CL =50pF, Differential output configuration.

Offset Voltage distribution (PMOS)

Offset Voltage distribution (NMOS)

Figure 2.

Figure 3.

TCVOS distribution (PMOS)

TCVOS distribution (NMOS)

Figure 4.

Figure 5.

Noise

vs.

Frequency (Core op-amp)

0.1Hz to 10Hz Noise (Core op-amp)

Figure 6.

Figure 7.

8

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