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
TBD
TBD
—
12
2
bits
µS
Conversion time
Conversion rate
Power-up time
—
—
—
500.000
11
conv/sec
µS
Time from release of PWRDWN
signal until DACOUT signal is
valid
tDAPU
Accuracy
Integral non-linearity1
LSB2
LSB2
Range of input digital words:
410 to 3891 ($19A - $F33)
5% to 95% of full range
INL
—
—
+/- 3
+/- 8.0
< - 1
Differential non-linearity1
Range of input digital words:
410 to 3891 ($19A - $F33)
5% to 95% of full range
DNL
+/- .8
Monotonicity
Offset error1
> 6 sigma monotonicity,
< 3.4 ppm non-monotonicity
guaranteed
+/- 25
—
Range of input digital words:
410 to 3891 ($19A - $F33)
5% to 95% of full range
VOFFSET
—
—
+/- 40
mV
Gain error1
Range of input digital words:
410 to 3891 ($19A - $F33)
5% to 95% of full range
EGAIN
+/- .5
+/- 1.5
%
DAC Output
Output voltage range
Within 40mV of either VREFLX or
VREFHX
VOUT
VREFLX
+.04V
—
VREFHX
- .04V
V
Short circuit current
DACOUT shorted to ground with
input digital word = $FFF
DACOUT shorted to VDDA with
ISC
ISC
—
—
70
50
100
75
mA
input digital word = $000
AC Specifications
Signal-to-noise ratio
SNR
—
—
TBD
TBD
—
—
dB
dB
Spurious free dynamic
range
SFDR
Effective number of bits
ENOB
9
—
—
bits
1. No guaranteed specification within 5% of V
2. LSB = 0.806mV
or V
SSA
DDA
56F8037/56F8027 Data Sheet, Rev. 6
164
FreescaleSemiconductor
FREESCALE [ Freescale ]
