SX8722I070LF datasheet(8/108 Pages) SEMTECH

Part #	SX8722I070LF

Description	High gain acquisition for sensor interface

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Manufacturer	SEMTECH [Semtech Corporation]

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ACS - Revision 4.2

October 2008

www.semtech.com

Page 8

ADVANCED COMMUNICATIONS & SENSING

DATASHEET

SX8722

High gain acquisition for sensor interface

Table 1. ZoomingADC specifications

ADC STATIC PERFORMANCES

Resolution

n

(Note 7)

6

16

Bits

No Missing Codes

(Note 8)

Gain Error

(Note 9)

+/- 0.15

% of FS

Offset Error

n = 16 bits

(Note 10)

+/- 1

LSB

Integral Non-Linearity

INL

resolution n = 16 bits (Note 11)

+/- 1.0

LSB

Differential Non-Linearity

DNL

resolution n = 16 bits (Note 12)

+/- 0.5

LSB

Power Supply Rejection Ratio

PSRR

VBATT = 5V +/- 0.3V (Note 13)

78

dB

VBATT = 3V +/- 0.3V (Note 13)

72

dB

ADC DYNAMIC PERFORMANCES

Throughput Rate (Continuous Mode)

TCONV

n = 12 bits (Note 14)

3

133

cycles / fS

n = 16 bits (Note 14)

0

1027

cycles / fS

Throughput Rate (Continuous Mode)

1/TCONV n = 12 bits, fS

3.76

kS/s

n = 16 bits, fS

0.49

kS/s

Nbr of Initialization Cycles

NINIT

02

cycles

Nbr of End Conversion Cycles

NEND

0

5

cycles

PGA Stabilization Delay

(Note 15)

OSR

cycles

TIME BASE

Max ADC oversampling frequency

fSmax

@ 25°C, with a 32k XTAL

270

300

330

kHz

Min ADC oversampling frequency

fSmin

@ 25°C, with a 32KXTAL

33

37.5

42

kHz

DIGITAL OUTPUT

ADC Output Data Coding

See Table 55 and Table 56

Binary Two’s Complement

TEMPERATURE

Specified Range

-40

+85

°C

Operating Range

-40

+125

°C

PARAMETER

COMMENTS/CONDITIONS

VALUE

UNITS

MIN

TYP

MAX

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