DAC8248FPZ datasheet(3/16 Pages) AD

Part #	DAC8248FPZ

Description	Dual 12-Bit (8-Bit Byte) Double-Buffered CMOS D/A Converter

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Parameter

Symbol

Conditions

DAC8248

Units

VDD = +5 V

VDD = +15 V

Switching Characteristics

+25 C

–40 C to +85 C

–55 C to +125 C

All Temps

(Notes 2, 8)

(Note 9)

(Note 10)

LSB

/MSB Select to

Write Set-Up Time

tCBS

130

170

180

80

ns min

LSB

/MSB Select to

Write Hold Time

tCBH

0

ns min

DAC Select to

Write Set-Up Time

tAS

180

210

220

80

ns min

DAC Select to

Write Hold Time

tAH

0

ns min

LDAC to

Write Set-Up Time

tLS

120

150

160

80

ns min

LDAC to

Write Hold Time

tLH

0

ns min

Data Valid to

Write Set-Up Time

tDS

160

210

220

70

ns min

Data Valid to

Write Hold Time

tDH

0

10

ns min

Write Pulse Width

tWR

130

150

170

90

ns min

LDAC Pulse Width

tLWD

100

110

130

60

ns min

Reset Pulse Width

tRWD

80

90

60

ns min

NOTES

11Measured using internal R

FB A and RFB B. Both DAC digital inputs = 1111 1111 1111.

12Guaranteed and not tested.

13Gain TC is measured from +25

°C to T

MIN or from +25°C to TMAX.

14Absolute Temperature Coefficient is approximately +50 ppm/

°C.

15From 50% of digital input to 90% of final analog output current. V

REF A = VREF B = +10 V; OUT A, OUT B load = 100 Ω, CEXT = 13 pF.

16WR, LDAC = 0 V; DB0–DB7 = 0 V to V

DD or VDD to 0 V.

17Settling time is measured from 50% of the digital input change to where the output settles within 1/2 LSB of full scale.

18See Timing Diagram.

19These limits apply for the commercial and industrial grade products.

10These limits also apply as typical values for V

DD = +12 V with +5 V CMOS logic levels and T A = +25°C.

Specifications subject to change without notice.

Burn-In Circuit

DAC8248

–3–

REV. B

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