WM2638 データシートの表示（PDF） - Wolfson Microelectronics plc
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コンポーネント説明
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WM2638
Wolfson Microelectronics plc
WM2638 Datasheet PDF : 11 Pages
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WM2638
Production Data
ELECTRICAL CHARACTERISTICS
Test Conditions:
RL = 10kΩ, 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
Static DAC Specifications
SYMBO
L
TEST CONDITIONS
MIN TYP
MAX
UNIT
Resolution
Integral non-linearity
Differential non-linearity
Zero code error
Gain error
D.c. power supply rejection ratio
INL
DNL
ZCE
GE
DC PSRR
See Note 1
See Note 2
See Note 3
See Note 4
See Note 5
12
bits
±2.0
±4.0
LSB
±0.4
±1
LSB
±24
mV
±0.6
% FSR
0.5
mV/V
Zero code error temperature coefficient
Gain error temperature coefficient
DAC Output Specifications
See Note 6
See Note 6
10
ppm/°C
10
ppm/°C
Output voltage range
0
VDD - 0.4
V
Output load regulation
Power Supplies
2kΩ to 10kΩ load
See Note 7
±0.1 ±0.25
%
Active supply current
Power down supply current
Dynamic DAC Specifications
IDD
No load, VIH = VDD, VIL = 0V
VDD = 5V, VREF = 2.048V, Internal
Slow
Fast
VDD = 5V, VREF = 2.048V, External
Slow
Fast
VDD = 3V, VREF = 1.024V, Internal
Slow
Fast
VDD = 3V, VREF = 1.024V, External
Slow
Fast
See Note 8
No load,
all digital inputs 0V or VDD,
See Note 9
2.2
2.7
mA
4.3
5.2
mA
1.8
2.2
mA
3.9
4.8
mA
1.8
2.3
mA
3.8
4.7
mA
1.5
1.9
mA
3.5
4.3
mA
0.01
10
µA
Slew rate
Settling time
Glitch energy
DAC code 32 to 4095, 10%-90%
Slow
1.5
Fast
8.0
See Note 10
DAC code 32 to 4095
Slow
3.5
Fast
1.0
See Note 11
Code 2047 to 2048
10
V/µs
V/µs
µs
µs
nV-s
Signal to noise ratio
SNR
fs = 400ksps, fOUT = 1kHz,
69
74
dB
BW = 20kHz
See Note 12
Signal to noise and distortion ratio
SNRD
fs = 400ksps, fOUT = 1kHz,
58
67
dB
BW = 20kHz
See Note 12
WOLFSON MICROELECTRONICS LTD
PD Rev 1.0 July 99
3
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