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WM2638 Datasheet(PDF) 3 Page - Wolfson Microelectronics plc

Part No. WM2638
Description  Dual 12-Bit Serial Input Voltage Output DAC with Internal reference
Download  11 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM2638 Datasheet(HTML) 3 Page - Wolfson Microelectronics plc

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WM2638
Production Data
WOLFSON MICROELECTRONICS LTD
PD Rev 1.0 July 99
3
ELECTRICAL CHARACTERISTICS
Test Conditions:
RL = 10k
Ω, C
L = 100pF. VDD = 5V
± 10%, V
REF = 2.048V and VDD = 3V
± 10%, V
REF = 1.024V over recommended operating free-air
temperature range (unless noted otherwise)
PARAMETER
SYMBO
L
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Static DAC Specifications
Resolution
12
bits
Integral non-linearity
INL
See Note 1
±2.0
±4.0
LSB
Differential non-linearity
DNL
See Note 2
±0.4
±1
LSB
Zero code error
ZCE
See Note 3
±24
mV
Gain error
GE
See Note 4
±0.6
% FSR
D.c. power supply rejection ratio
DC PSRR
See Note 5
0.5
mV/V
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
0
VDD - 0.4
V
Output load regulation
2k
Ω to 10kΩ load
See Note 7
±0.1
±0.25
%
Power Supplies
Active supply current
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
2.2
4.3
1.8
3.9
1.8
3.8
1.5
3.5
2.7
5.2
2.2
4.8
2.3
4.7
1.9
4.3
mA
mA
mA
mA
mA
mA
mA
mA
Power down supply current
No load,
all digital inputs 0V or VDD,
See Note 9
0.01
10
µA
Dynamic DAC Specifications
Slew rate
DAC code 32 to 4095, 10%-90%
Slow
Fast
See Note 10
1.5
8.0
V/
µs
V/
µs
Settling time
DAC code 32 to 4095
Slow
Fast
See Note 11
3.5
1.0
µs
µs
Glitch energy
Code 2047 to 2048
10
nV-s
Signal to noise ratio
SNR
fs = 400ksps, fOUT = 1kHz,
BW = 20kHz
See Note 12
69
74
dB
Signal to noise and distortion ratio
SNRD
fs = 400ksps, fOUT = 1kHz,
BW = 20kHz
See Note 12
58
67
dB


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