WM2637
Production Data
Note: Reference voltages greater than VDD/2 will cause saturation for large DAC codes.
ELECTRICAL CHARACTERISTICS
Test Conditions:
RL = 10kW, CL = 100pF. VDD = 5V ± 10%, VREF = 2.048V and VDD = 3V ± 10%, VREF = 1.024V over recommended operating free-air
temperature range (unless noted otherwise)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Static DAC Specifications
Resolution
10
bits
LSB
Integral non-linearity
INL
DNL
See Note 1
See Note 2
See Note 3
See Note 4
See Note 5
See Note 6
See Note 6
±0.4
±0.1
±1.0
±0.5
±24
Differential non-linearity
Zero code error
LSB
ZCE
mV
Gain error
GE
% FSR
mV/V
ppm/°C
ppm/°C
±0.6
D.c. power supply rejection ratio
Zero code error temperature coefficient
Gain error temperature coefficient
DAC Output Specifications
Output voltage range
DC PSRR
0.5
10
10
0
VDD - 0.1
V
Output load regulation
2kW to 10kW load
%
±0.1
±0.25
See Note 7
Power Supplies
Active supply current
IDD
No load, VIH = VDD, VIL = 0V
VDD = 5V, VREF = 2.048V, Internal
Slow
2.0
4.2
2.5
5.0
mA
mA
Fast
VDD = 5V, VREF = 2.048V, External
Slow
1.7
3.8
2.1
4.6
mA
mA
Fast
VDD = 3V, VREF = 1.024V, Internal
Slow
1.7
3.7
2.2
4.6
mA
mA
Fast
VDD = 3V, VREF = 1.024V, External
Slow
Fast
1.4
3.4
1.8
4.2
mA
mA
See Note 8
Power down supply current
No load,
all digital inputs 0V or VDD
See Note 9
0.01
10
mA
Dynamic DAC Specifications
Slew rate
DAC code 32 to 1023, 10%-90%
Slow
Fast
1.5
8.0
V/ms
V/ms
See Note 10
DAC code 32 to 1023
Slow
Settling time
3.5
1.0
ms
ms
Fast
See Note 11
Code 511 to 512
Glitch energy
10
56
nV-s
dB
Signal to noise ratio
SNR
fs = 400ksps, fOUT = 1kHz,
BW = 20kHz
53
50
See Note 12
Signal to noise and distortion ratio
SNRD
fs = 400ksps, fOUT = 1kHz,
BW = 20kHz
54
dB
WOLFSON MICROELECTRONICS LTD
PD Rev 1.0 July 99
3
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
