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參數(shù)資料
| 型號： | WM2638CD |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | Dual 12-Bit Serial Input Voltage Output DAC with Internal reference |
| 中文描述： | 雙路12位串行輸入電壓輸出DAC，帶有內(nèi)部參考 |
| 文件頁數(shù)： | 2/11頁 |
| 文件大?。?/td> | 360K |
| 代理商： | WM2638CD |
WM2638
Production Data
WOLFSON MICROELECTRONICS LTD
PD Rev 1.0 July 99
2
PIN CONFIGURATION
1
2
3
4
NCS
DIN
SCLK
AGND
REF
OUTB
VDD
OUTA
5
6
7
8
PIN DESCRIPTION
PIN NO
1
2
3
4
5
6
7
8
NAME
DIN
SCLK
NCS
OUTA
AGND
REF
OUTB
VDD
TYPE
Digital input
Digital input
Digital input
Analogue output
Supply
Analogue I/O
Analogue output
Supply
DESCRIPTION
Serial data input.
Serial clock input.
Chip select. This pin is active low.
DAC A analogue output.
Analogue ground.
Reference voltage input/output.
DAC B analogue output
Positive power supply.
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously operating at or
beyond these limits. Device functional operating limits and guaranteed performance specifications are given under Electrical
Characteristics at the test conditions specified
ESD Sensitive Device. This device is manufactured on a CMOS process. It is therefore generically susceptible to
damage from excessive static voltages. Proper ESD precautions must be taken during handling and storage of this
device.
CONDITION
MIN
MAX
Supply voltage, VDD to AGND
7V
Digital input voltage range to AGND
-0.3V
VDD + 0.3V
Reference input voltage range to AGND
-0.3V
VDD + 0.3V
Output voltage at OUT from external source
VDD + 0.3V
Operating temperature range, T
A
WM2638C
WM2638I
0
°
C
-40
°
C
-65
°
C
70
°
C
85
°
C
150
°
C
Storage temperature
Lead temperature 1.6mm (1/16 inch) soldering for 10 seconds
260
°
C
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Supply voltage
High-level digital input voltage
Low-level digital input voltage
Reference voltage to REF
Load resistance
Load capacitance
Serial clock rate
Operating free-air temperature
VDD
V
IH
V
IL
V
REF
R
L
C
L
F
SCLK
T
A
2.7
2
5.5
0.8
V
V
V
V
k
VDD - 1.5
2
100
20
70
85
WM2638C
WM2638I
0
°C
°C
-40
Note
: Reference voltages greater than VDD/2 will cause saturation for large DAC codes.
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