165Cedar Hill Street,Marlborough,MA01752 Tel:508.485.6350 Fax: 508.485.5168

FU N C TION AL D IAG RAM

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11

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GA IN A DJ

BIT 8 (LSB)

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1 (M SB)

M SB

STA TUS

STA RT

CLOCK IN

SERIA L OUT

DIG GND

DA C

SUCCESSIV E

A PPROXIM A TION

REGISTER

REF

CLOCK

PIN OUTS

n - A DC541

(n)-A DC542

COM P

+15V

A NA GND

SUM M ING JUNCT

10V INPUT

20V INPUT

BIPOLA R OFFSET

-15V

CLOCK OUT

+5V

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4

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15

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5k

5k

6.2k

K EY

LINES

A LL UNITS

A D541 ONLY

A D542 ONLY

FEATURES

• 2.5µS conversion time

• Low Power: 650mW

• W ide temperature range models: -55ºC to +125ºC operation

• M IL-STD-883 or commercial/industrial processing

• Plug-in replacements for A DC82

DESCRIPTIO N

The A DC541/542 Series are fast, low power, hybrid IC

analog-to-digital converters (A CDs). The series

features 8-bit resolution and accuracy with 2.5µS

typical conversion time. The lower power drain of

650 mW is from standard ±15 V DC and +5V DC power

supplies. A ll models are hermetically seated in 24-pin

DIP style packages and are complete with precision

thin-film DA C, clock, comparator reference and

successive approximation register.

The A DC541C-8 and A DC542C-8 are processed to

commercial/industrial standards and operate –25ºC to

+85ºC. A DC541B-8 and A DC542B-8 are processed to

M IL-STD-883 Rev.C, Level B requirements, and

operate –55ºC to +125ºC. In addition, the A DC542

versions are plug-in replacements for the A DC82.

A ll models can be externally pin-connected for 3

unipolar and 3 bipolar input ranges. Output coding

in the bipolar mode is user selectable as either offset

binary or 2’s complement. A DC541/ 542 feature an

overall temperature coefficient of ± 45 ppm/ºC and

long-term stability if 0.1% /year.

A DC541/542 models provide systems designers with

greater flexibiity savings in space and weight and the

ultimate in reliability. Their compact size, 8-bit

resolution, accuracy an extensive self-contained

features are particularly well suited to

microprocessor applicat ions.

8-Bit, W ide Temperature

2.5µS AD Cs

AD C541/542

Data Converter Line

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