Datasheet

56F8037/56F8027 Data Sheet, Rev. 8
164 Freescale Semiconductor
10.18 Digital-to-Analog Converter (DAC) Parameters
Table 10-22 DAC Parameters
Parameter Conditions/Comments Symbol Min Typ Max Unit
DC Specifications
Resolution 12 12 bits
Conversion time TBD — 2 µS
Conversion rate TBD — 500.000 conv/sec
Power-up time Time from release of PWRDWN
signal until DACOUT signal is
valid
t
DAPU
— — 11 µS
Accuracy
Integral non-linearity
1
1. No guaranteed specification within 5% of V
DDA
or V
SSA
Range of input digital words:
410 to 3891 ($19A - $F33)
5% to 95% of full range
INL — +/- 3 +/- 8.0
LSB
2
2. LSB = 0.806mV
Differential non-linearity
1
Range of input digital words:
410 to 3891 ($19A - $F33)
5% to 95% of full range
DNL — +/- .8 < - 1
LSB
2
Monotonicity > 6 sigma monotonicity,
< 3.4 ppm non-monotonicity
guaranteed —
Offset error
1
Range of input digital words:
410 to 3891 ($19A - $F33)
5% to 95% of full range
V
OFFSET
— +/- 25 +/- 40 mV
Gain error
1
Range of input digital words:
410 to 3891 ($19A - $F33)
5% to 95% of full range
E
GAIN
— +/- .5 +/- 1.5 %
DAC Output
Output voltage range Within 40mV of either V
REFLX
or
V
REFHX
V
OUT
V
REFLX
+.04V
—V
REFHX
- .04V
V
Short circuit current DACOUT shorted to ground with
input digital word = $FFF
DACOUT shorted to V
DDA
with
input digital word = $000
I
SC
I
SC
—
—
70
50
100
75
mA
AC Specifications
Signal-to-noise ratio SNR — TBD — dB
Spurious free dynamic
range
SFDR — TBD — dB
Effective number of bits ENOB 9 — — bits