參數(shù)資料
型號(hào): LTC1655CS8
廠(chǎng)商: LINEAR TECHNOLOGY CORP
元件分類(lèi): DAC
英文描述: 16-Bit Rail-to-Rail Micropower DAC in SO-8 Package
中文描述: SERIAL INPUT LOADING, 20 us SETTLING TIME, 16-BIT DAC, PDSO8
封裝: 0.150 INCH, PLASTIC, SO-8
文件頁(yè)數(shù): 5/12頁(yè)
文件大小: 92K
代理商: LTC1655CS8
5
LTC1655
PI
FU
CTIO
N
S
U
U
CLK (Pin 1):
The TTL Level Input for the Serial Interface
Clock.
D
IN
(Pin 2):
The TTL Level Input for the Serial Interface
Data. Data on the D
IN
pin is latched into the shift register
on the rising edge of the serial clock and is loaded MSB
first. The LTC1655 requires a 16-bit word.
CS/LD (Pin 3):
The TTL Level Input for the Serial Inter-
face Enable and Load Control. When CS/LD is low the
CLK signal is enabled, so the data can be clocked in.
When CS/LD is pulled high, data is loaded from the shift
register into the DAC register, updating the DAC output.
D
OUT
(Pin 4):
Output of the Shift Register. Becomes valid
on the rising edge of the serial clock and swings from GND
to V
CC
.
GND (Pin 5):
Ground.
REF (Pin 6):
Reference. Output of the internal reference is
2.048V. There is a gain of two from this pin to the output.
The reference can be overdriven from 2.2V to V
CC
/2. When
tied to V
CC
/2, the output will swing from GND to V
CC
. The
output can only swing to within its offset specification of
V
CC
(see Applications Information).
V
OUT
(Pin 7):
Deglitched Rail-to-Rail Voltage Output. V
OUT
clears to 0V on power-up.
V
CC
(Pin 8):
Positive Supply Input. 4.5V
V
CC
5.5V.
Requires a bypass capacitor to ground.
TW U
W
D15
MSB
D14
D13
D1
t
1
t
6
D0
LSB
t
2
t
4
t
3
t
8
CLK
D
IN
D
OUT
CS/LD
t
5
1655 TD
D15
PREVIOUS WORD
D14
PREVIOUS WORD
D0
PREVIOUS WORD
D15
CURRENT WORD
D13
PREVIOUS WORD
t
9
t
7
1
2
3
15
16
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