WM2627CDT Ver la hoja de datos (PDF) - Wolfson Microelectronics plc
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WM2627CDT Datasheet PDF : 11 Pages
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WM2627
Production Data
ELECTRICAL CHARACTERISTICS
Test Conditions:
RL = 10kΩ, CL = 100pF. AVDD = DVDD = 5V ± 10%, VREF = 2.048V and AVDD = DVDD = 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
8
bits
Integral non-linearity
INL
See Note 1
±0.3
±0.5
LSB
Differential non-linearity
DNL
See Note 2
±0.03
±0.5
LSB
Zero code error
ZCE
See Note 3
±10
mV
Gain error
GE
See Note 4
±0.6
% FSR
Power supply rejection ratio
PSRR
See Note 5
-68
dB
Zero code error temperature coefficient
See Note 6
10
ppm/°C
Gain error temperature coefficient
See Note 6
10
ppm/°C
DAC Output Specifications
Output voltage range
Output load regulation
RL = 10kΩ
2kΩ to 10kΩ load
See Note 7
0
AVDD-0.1
V
0.1
0.25 % of FS
voltage
Power Supplies
Active supply current
IDD
No load, VIH = DVDD, VIL = 0V
mA
AVDD = 5V,
VREF = 2.048V Slow
1.4
2.2
AVDD = 5V,
VREF = 2.048V Fast
3.5
5.5
AVDD = 3V,
VREF = 1.024V Slow
1.0
1.5
AVDD = 3V,
VREF = 1.024V Fast
See Note 8
3.0
4.5
Power down supply current
No load, all digital inputs
1
µA
0V or DVDD
Dynamic DAC Specifications
Slew rate
Fast
1.0
V/µs
Slow
5.0
V/µs
See Note 9
Settling time
To ±0.1LSB
Slow
8.5
µs
Fast
2.5
µs
See Note 10
Glitch energy
Code 127 to 128
10
nV-s
Signal to noise ratio
SNR
fs = 400ksps, fOUT = 1kHz,
57
dB
BW = 20kHz
See Note 11
Signal to noise and distortion ratio
SINAD
fs = 400ksps, fOUT = 1kHz,
49
dB
BW = 20kHz
See Note 11
Total harmonic distortion
THD
fs = 400ksps, fOUT = 1kHz,
-50
dB
BW = 20kHz
See Note 11
Spurious free dynamic range
SFDR
fs = 400ksps, fOUT = 1kHz,
60
dB
BW = 20kHz
See Note 11
WOLFSON MICROELECTRONICS LTD
PD Rev 1.0 April 2001
4
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