TLV2548-EP

SLAS668 – OCTOBER 2009

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OPERATING CHARACTERISTICS

over operating free-air temperature range, VCC = VREFP = 3 V to 5.5 V, VREFM = 0 V, SCLK frequency = 20 MHz at 5 V,

15 MHz at 3 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP (1) MAX UNIT

EL

Integral linearity error (INL)(2)

±1.2

LSB

ED

Differential linearity error (DNL)

See (3)

±1.2

LSB

TA = 25°C and

–4

6

125°C

EO

Offset error (4)

See (3)

LSB

TA = –55°C

–4

6.2

TA = 25°C and

–4

6

125°C

EFS

Full scale error (4)

See (3)

LSB

TA = –55°C

–4

7.6

800h

SDI = B000h

(2048D)

Self–test output code (5)

SDI = C000h

000h (0D)

FFFh

SDI = D000h

(4095D)

Internal OSC

3.2

4.5

t(conv)

Conversion time

μs

(14 x DIV) /

External SCLK

fSCLK

With a maximum of 1-kW input source

t(sample)

Sampling time

600

ns

impedance

(1)

All typical values are at TA = 25°C.

(2)

Linear error is the maximum deviation from the best straight line through the A/D transfer characteristics.

(3)

Analog input voltages greater than that applied to REFP convert as all ones (111111111111), while input voltages less than that applied

to REFM convert as all zeros (000000000000).

(4)

Zero error is the difference between 000000000000 and the converted output for zero input voltage: full-scale error is the difference

between 111111111111 and the converted output for full-scale input voltage.

(5)

Both the input data and the output codes are expressed in positive logic.

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