SA1203I datasheet(8/30 Pages) STMICROELECTRONICS

Part #	SA1203I

Description	Dual-channel 12-bit 40Msps 215mW A/D converter

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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Electrical characteristics

TSA1203

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7

Electrical characteristics

Electrical characteristics, unless otherwise specified, are measured at

AVCC =DVCC =VCCB = 2.5 V, FS = 40 Msps, Rpol =18kΩ, Fin = 2 MHz, Vin@ -1 dBFS,

VREFP=0.8 V, VREFM=0 V, and Tamb = 25° C.

Table 6.

Analog inputs

Symbol

Parameter

Test

conditions

Min

Typ

Max

Unit

VIN-VINB Full scale reference voltage

Differential

inputs

mandatory

1.1

2.0

2.8

Vpp

Cin

Input capacitance

7.0

pF

Req

Equivalent input resistor

10

k

Ω

BW

Analog input bandwidth

Vin@full scale,

Fs=40 Msps

1000

MHz

ERB

Effective resolution bandwidth

70

MHz

Table 7.

Digital inputs and outputs

Symbol

Parameter

Test

conditions

Min

Typ

Max

Unit

Clock and Select inputs

VIL

Logic "0" voltage

0

0.8

V

VIH

Logic "1" voltage

2.0

2.5

V

OEB input

VIL

Logic "0" voltage

0

0.25 x VCCBE

V

VIH

Logic "1" voltage

0.75 x VCCBE

VCCBE

V

Digital outputs

VOL

Logic "0" voltage

IOL=10 µA

0

0.1 x VCCBE

V

VOH

Logic "1" voltage

IOH=10 µA

0.9 x VCCBE

VCCBE

V

IOZ

High impedance

leakage current

OEB set to

VIH

-1.67

0

1.67

µA

CL

Output load

capacitance

15

pF

Table 8.

Reference voltage

Symbol

Parameter

Min

Typ

Max

Unit

VREFP I

VREFP Q

Top internal reference voltage

0.81

0.88

0.94

V

VINCM I

VINCM Q

Input common mode voltage

0.41

0.46

0.50

V

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