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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

ADS8508

SLAS433 – SEPTEMBER 2005

MINIMUM

NO

MINIMUM

SPECIFICATION

RELATIVE

PACKAGE

PACKAGE

ORDERING

TRANSPORT

PRODUCT

MISSING

SINAD

TEMPERATURE

ACCURACY

LEAD

DESIGNATOR

NUMBER

MEDIA, QTY

CODE

(dB)

RANGE

(LSB)

ADS8508IBDW

Tube, 25

ADS8508IB

±0.45

12

72

-40°C to 85°C

SO-20

DW

ADS8508IBDWR

Tape and Reel, 2000

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

website at www.ti.com.

ADS8508

±25 V

±25 V

Analog inputs

±25 V

CAP

REF

DGND, AGND2

±0.3 V

6 V

Ground voltage differences

0.3 V

6 V

Digital inputs

Maximum junction temperature

165°C

Storage temperature range

–65°C to 150°C

Internal power dissipation

700 mW

Lead temperature (soldering, 10s)

260°C

(1)

All voltage values are with respect to network ground terminal.

At T

Figure 29) (unless otherwise specified)

ADS8508IB

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

Resolution

12

Bits

ANALOG INPUT

Capacitance

50

pF

THROUGHPUT SPEED

Conversion cycle

Acquire and convert

4

µs

Throughput rate

250

kHz

DC ACCURACY

INL

Integral linearity error

-0.45

0.45

DNL

Differential linearity error

-0.45

0.45

LSB

No missing codes

12

Bits

0.1

LSB

(1)

±10 V, 0 V to 5 V, etc. (see Table 3)

(2)

LSB means least significant bit. For the ±10-V input range, one LSB is 4.88 mV.

(3)

Typical rms noise at worst case transitions and temperatures.

2