AD779 datasheet(4/12 Pages) AD

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AD779

–4–

REV. B

TIMING SPECIFICATIONS

(All device types TMIN to TMAX, VCC = +12 V

5%, VEE = –12 V

5%, VDD = +5 V

10%)

Parameter

Symbol

Min

Max

Units

Conversion Rate

tCR

7.8

µs

Convert Pulse Width

tCP

0.097

3.0

µs

Aperture Delay

tAD

520

Conversion Time

6.3

µs

Status Delay

tSD

400

Access Time

2, 3

tBA

100

Float Delay

tFD

Output Delay

tOD

0ns

Delay

tOE

Read Pulse Width

tRP

100

Conversion Delay

tCD

400

NOTES

1Includes Acquisition Time.

2Measured from the falling edge of OE/EOCEN (0.8 V) to the time at which the

data lines/EOC cross 2.0 V or 0.8 V. See Figure 4.

OUT = 100 pF.

OUT = 50 pF.

5Measured from the rising edge of OE/EOCEN (2.0 V) to the time at which the

output voltage changes by 0.5 V. See Figure 4; COUT = 10 pF.

Specifications subject to change without notice.

Figure 1. Conversion Timing

Figure 2. Output Timing

Figure 3. EOC Timing

Figure 4. Load Circuit for Bus Timing Specifications

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