LMP91050

IN

CMOUT

A0

A1

GND

VDD

SDIO

OUT

CSB

SCLK

LMP91050

www.ti.com

SNAS517E – NOVEMBER 2011 – REVISED SEPTEMBER 2015

5 Description (continued)

The offset cancellation circuitry compensates for the dark signal by adding an equal and opposite offset to the

input of the second stage, thus removing the original offset from the output signal. This offset cancellation

circuitry allows optimized usage of the ADC full scale and relaxes ADC resolution requirements.

The LMP91050 allows extra signal filtering (high-pass, lowpass or bandpass) through dedicated pins A0 and A1,

in order to remove out of band noise. The user can program through the on board SPI interface. Available in a

small form factor 10-pin package, the LMP91050 operates from –40 to 105°C.

6 Pin Configuration and Functions

DGS Package

10-Pin VSSOP

Top View

Pin Functions

PIN

TYPE

DESCRIPTION

NO.

NAME

1

IN

Analog Input

Signal Input

2

CMOUT

Analog Output

Common-Mode Voltage Output

3

A0

Analog Output

First Stage Output

4

A1

Analog Input

Second Stage Input

5

GND

Power

Ground

6

OUT

Analog Output

Signal Output, reference to the same potential as CMOUT

7

CSB

Digital Input

Chip Select, active low

8

SCLK

Digital Input

Interface Clock

9

SDIO

Digital Input / Output Serial Data Input / Output

10

VDD

Power

Positive Supply

7 Specifications

7.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)

(1) (2) (3)

MIN

MAX

UNIT

Supply Voltage (VDD)

–0.3

6

V

Voltage at Any Pin

–0.3

VDD + 0.3

V

Input Current at Any Pin

5

mA

150

°C

–65

150

°C

(1)

Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings

only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended

Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2)

If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and

specifications.

(3)

For soldering specifications:

see product folder at www.ti.com and SNOA549.

(4)

The maximum power dissipation is a function of TJ(MAX),

θJA, and the ambient temperature, TA. The maximum allowable power

dissipation at any ambient temperature is PDMAX = (TJ(MAX) - TA)/

θJA All numbers apply for packages soldered directly onto a PC

board.

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