Datasheet

Parameter Symbol Conditions DAC8248 Units
V
DD
= +5 V V
DD
= +15 V
Switching Characteristics +258C –408C to +858C –558C to +1258C All Temps
(Notes 2, 8) (Note 9) (Note 10)
LSB/MSB Select to
Write Set-Up Time t
CBS
130 170 180 80 ns min
LSB/MSB Select to
Write Hold Time t
CBH
0 0 0 0 ns min
DAC Select to
Write Set-Up Time t
AS
180 210 220 80 ns min
DAC Select to
Write Hold Time t
AH
0 0 0 0 ns min
LDAC to
Write Set-Up Time t
LS
120 150 160 80 ns min
LDAC to
Write Hold Time t
LH
0 0 0 0 ns min
Data Valid to
Write Set-Up Time t
DS
160 210 220 70 ns min
Data Valid to
Write Hold Time t
DH
0 0 0 10 ns min
Write Pulse Width t
WR
130 150 170 90 ns min
LDAC Pulse Width t
LWD
100 110 130 60 ns min
Reset Pulse Width t
RWD
80 90 90 60 ns min
NOTES
11
Measured using internal R
FB A
and R
FB B
. Both DAC digital inputs = 1111 1111 1111.
12
Guaranteed and not tested.
13
Gain TC is measured from +25°C to T
MIN
or from +25°C to T
MAX
.
14
Absolute Temperature Coefficient is approximately +50 ppm/°C.
15
From 50% of digital input to 90% of final analog output current. V
REF A
= V
REF B
= +10 V; OUT A, OUT B load = 100 Ω, C
EXT
= 13 pF.
16
WR, LDAC = 0 V; DB0–DB7 = 0 V to V
DD
or V
DD
to 0 V.
17
Settling time is measured from 50% of the digital input change to where the output settles within 1/2 LSB of full scale.
18
See Timing Diagram.
19
These limits apply for the commercial and industrial grade products.
10
These 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