LMP91051

SNAS581B – MARCH 2012 – REVISED MAY 2013

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ELECTRICAL CHARACTERISTICS

(1) (continued)

The following specifications apply for VDD = 3.3V, VIO = 3.3V, VCM = 1.15V, Bold values for TA = -40°C to +85°C unless

otherwise specified. All other limits apply to TA = TJ = +25°C.

PARAMETER

TEST CONDITIONS

MIN(2)

TYP(3)

MAX(2)

UNIT

Combined Amplifier Chain Specification

Combination of both current and voltage

en

Input-Referred Noise Density

noise, with a 86k

Ω source impedance at

30

nV

√Hz

5Hz, Gain = 7986

Combination of both current and voltage

Input-Referred Integrated Noise

noise, with a 86k

Ω source impedance

0.1

0.12(4)

µVrms

0.1Hz to 10Hz, Gain = 7986

PGA1 GAIN = 42, PGA2 GAIN = 4

167

PGA1 GAIN = 42, PGA2 GAIN = 8

335

PGA1 GAIN = 42, PGA2 GAIN = 16

669

PGA1 GAIN = 42, PGA2 GAIN = 3

1335

G

Gain

V/V

2 PGA1 GAIN = 250, PGA2 GAIN = 4

1002

PGA1 GAIN = 250, PGA2 GAIN = 8

2004

PGA1 GAIN = 250, PGA2 GAIN = 16

4003

PGA1 GAIN = 250, PGA2 GAIN = 32

7986

GE

Gain Error

Any gain

5

%

Gain = 167 V/V, 335 V/V, 669 V/V, 1335

6

V/V

TCCGE

Gain Temp Coefficient(5)

ppm/°C

Gain = 1002 V/V, 2004 V/V, 4003 V/V,

20

7986V/V

PSRR

Power Supply Rejection Ratio

DC, 3.0V to 3.6V supply, gain = 1002V/V

90

110

dB

1mV input step signal, Gain = 1002,

PhDly

Phase Delay

9

µs

Vout measured at Vdd/2

Phase Delay variation with

1mV input step signal, Gain=1002, Vout

TCPhDly

300

ns

Temperature(6)

measured at Vdd/2

Gain = 167 V/V

70

Gain = 335 V/V

100

Gain = 669 V/V

160

Gain = 1335 V/V

290

Output Offset Voltage Temperature

TCVOS

µV/°C

Drift(5)

Gain = 1002 V/V

230

Gain = 2004 V/V

420

Gain = 4003 V/V

800

Gain = 7986V/V

1550

Common Mode Generator

VDD = 3.3V

1.15

V

VCM

Common Mode Voltage

VDD = 5V

2.59

VCM accuracy

2

%

CLOAD

CMOut Load Capacitance

10

nF

(4)

Guaranteed by design and characterization. Not tested on shipped production material.

(5)

TCCGE and TCVOS are calculated by taking the largest slope between –40°C and 25°C linear interpolation and 25°C and 85°C linear

interpolation.

(6)

TCPhDly is largest change in phase delay between –40°C and 25°C measurements and 25°C and 85°C measurements.

6

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