TLV2556MPWREP datasheet(7/37 Pages) TI

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OPERATING CHARACTERISTICS

TLV2556-EP

www.ti.com ................................................................................................................................................... SLAS598A – NOVEMBER 2008 – REVISED JULY 2009

over recommended operating free-air temperature range, VREF+ = 5 V,

SCLK frequency = 15 MHz when VCC = 5 V, VREF+ = 2.5 V,

SCLK frequency = 10 MHz when VCC = 2.7 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN TYP(1)

MAX

UNIT

INL

Integral nonlinearity error(2)

–1

LSB

DNL

Differential nonlinearity error

–1

LSB

Offset error(3)(4)

–2

Gain error(3)(4)

–3

Total unadjusted error(5)

±1.5

LSB

Address data input = 1011

2048

Self-test output code(6) (see Table 2)

Address data input = 1100

Address data input = 1101

4095

(1)

All typical values are at VCC = 5 V, TA = 25°C.

(2)

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

(3)

Analog input voltages greater than the voltage applied to REF+ convert as all ones (111111111111), while input voltages less than the

voltage applied to REF– convert as all zeros (000000000000).

(4)

Gain error is the difference between the actual mid-step value and the nominal mid-step value in the transfer diagram at the specified

gain point after the offset error has been adjusted to zero. Offset error is the difference between the actual mid-step value and the

nominal mid-step value at the offset point.

(5)

Total unadjusted error comprises linearity, zero-scale, and full-scale errors.

(6)

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

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