TLC1550I, TLC1550M, TLC1551I

10BIT ANALOGTODIGITAL CONVERTERS

WITH PARALLEL OUTPUTS

SLAS043G − MAY 1991 − REVISED NOVEMBER 2003

6

POST OFFICE BOX 655303

operating characteristics over recommended operating free-air temperature range with internal

clock and minimum sampling time of 4

noted)

PARAMETER

TEST CONDITIONS

TA†

MIN

TYP‡

MAX

UNIT

TLC1550I

Full range

±0.5

EL

Linearity error

TLC1551I

See Note 3

Full range

±1

LSB

EL

Linearity error

TLC1550M

See Note 3

25

°C

±0.5

LSB

TLC1550M

Full range

±1

TLC1550I

Full range

±0.5

EZS

Zero-scale error

TLC1551I

See Notes 2 and 4

Full range

±1

LSB

EZS

Zero-scale error

TLC1550M

See Notes 2 and 4

25

°C

±0.5

LSB

TLC1550M

Full range

±1

TLC1550I

Full range

±0.5

EFS

Full-scale error

TLC1551I

See Notes 2 and 4

Full range

±1

LSB

EFS

Full-scale error

TLC1550M

See Notes 2 and 4

25

°C

±0.5

LSB

TLC1550M

Full range

±1

TLC1550I

Full range

±0.5

Total unadjusted error

TLC1551I

See Note 5

Full range

±1

LSB

Total unadjusted error

TLC1550M

See Note 5

25

°C

±1

LSB

tc

Conversion time

fclock(external) = 4.2 MHz or

internal clock

6

µs

ta(D)

Data access time after RD goes low

35

ns

tv(D)

Data valid time after RD goes high

5

ns

tdis(D)

Disable time, delay time from RD high to high

impedance

See Figure 3

30

ns

td(EOC) Delay time, RD low to EOC high

0

15

ns

† Full range is − 40°C to 85°C for the TL155xI devices and −55°C to 125°C for the TLC1550M.

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

NOTES:

2. Analog input voltages greater than that applied to REF+ convert to all 1s (1111111111), while input voltages less than that applied

to REF − convert to all 0s (0000000000). The total unadjusted error may increase as this differential voltage falls below 4.75 V.

3. Linearity error is the difference between the actual analog value at the transition between any two adjacent steps and its ideal value

after zero-scale error and full-scale error have been removed.

4. Zero-scale error is the difference between the actual mid-step value and the nominal mid-step value at specified zero scale.

Full-scale error is the difference between the actual mid-step value and the nominal mid-step value at specified full scale.

5. Total unadjusted error is the difference between the actual analog value at the transition between any two adjacent steps and its

ideal value. It includes contributions from zero-scale error, full-scale error, and linearity error.