8-Bit, High Speed, Multiplying

D/A Converter

Data Sheet

DAC08

Rev. D

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FEATURES

Fast settling output current: 85 ns

Full-scale current prematched to ±1 LSB

Direct interface to TTL, CMOS, ECL, HTL, PMOS

Nonlinearity to 0.1% maximum over temperature range

High output impedance and compliance: −10 V to +18 V

Complementary current outputs

Wide range multiplying capability: 1 MHz bandwidth

Low FS current drift: ±10 ppm/°C

Wide power supply range: ±4.5 V to ±18 V

Low power consumption: 33 mW at ±5 V

Low cost

GENERAL DESCRIPTION

The DAC08 series of 8-bit monolithic digital-to-analog convert-

ers provide very high speed performance coupled with low cost

and outstanding applications flexibility.

Advanced circuit design achieves 85 ns settling times with very

low glitch energy and at low power consumption. Monotonic

multiplying performance is attained over a wide 20 to 1 reference

current range. Matching to within 1 LSB between reference and

full-scale currents eliminates the need for full-scale trimming in

most applications.

Direct interface to all popular logic families with full noise

immunity is provided by the high swing, adjustable threshold

logic input.

High voltage compliance complementary current outputs are

provided, increasing versatility and enabling differential operation

to effectively double the peak-to-peak output swing. In many

applications, the outputs can be directly converted to voltage

without the need for an external op amp. All DAC08 series models

guarantee full 8-bit monotonicity, and nonlinearities as tight as

±0.1% over the entire operating temperature range are available.

Device performance is essentially unchanged over the ±4.5 V to

±18 V power supply range, with 33 mW power consumption

attainable at ±5 V supplies.

The compact size and low power consumption make the DAC08

attractive for portable and military/aerospace applications;

devices processed to MIL-STD-883, Level B are available.

DAC08 applications include 8-bit, 1 µs A/D converters, servo

motor and pen drivers, waveform generators, audio encoders

and attenuators, analog meter drivers, programmable power

supplies, LCD display drivers, high speed modems, and other

applications where low cost, high speed, and complete

input/output versatility are required.

FUNCTIONAL BLOCK DIAGRAM

14

15

V+

(MSB)

B1

B2

B3

B4

B5

B6

B7

(LSB)

B8

13

1

5

6

7

8

9

10

11

12

V–

COMP

3

16

4

2

BIAS

NETWORK

CURRENT

SWITCHES

REFERENCE

AMPLIFIER

DAC08

Figure 1.