參數(shù)資料
型號(hào): LTC1454
廠商: Linear Technology Corporation
英文描述: Dual 12-Bit Rail-to-Rail Micropower DACs(5V,雙路12位滿幅度微功耗電壓輸出數(shù)模轉(zhuǎn)換器)
中文描述: 雙12位軌至軌微數(shù)模轉(zhuǎn)換器(5V的,雙路12位滿幅度微功耗電壓輸出數(shù)模轉(zhuǎn)換器)
文件頁(yè)數(shù): 5/12頁(yè)
文件大小: 215K
代理商: LTC1454
5
LTC1454/LTC1454L
X1/X2 B, X1/X2 A (Pins 1, 7):
The Input Pin that Sets the
Gain for DAC A/B. When grounded the gain will be 2, i.e.,
output full scale will be
×
2 REFHI. When connected to
V
OUT
the gain will be 1, i.e., output full scale will be equal
to REFHI.
CLR (Pin 2):
The Clear Pin for the DAC. Clears both DACs
to zero scale when pulled low. This pin should be tied to
V
CC
for normal operation.
CLK (Pin 3):
The Serial Interface Clock Input.
D
IN
(Pin 4):
The Serial Data Input. Data on the D
IN
pin is
latched into the shift register on the rising edge of the serial
clock. Data is loaded as one 24-bit word. The first 12 bits
are for DAC A, MSB-first and the second 12 bits are for
DAC B, MSB-first.
CS/LD (Pin 5):
The Serial Interface Enable and Load
Control Input. When CS/LD is low the CLK signal is
enabled so the data can be clocked in. When CS/LD is
PI
FU
CTIO
N
S
U
U
pulled high, data is loaded from the shift register into the
DAC register, updating the DAC output.
D
OUT
(Pin 6):
The Output of the Shift Register which
Becomes Valid on the Rising Edge of the Serial Clock.
V
OUT A,
V
OUT B
(Pins 8, 16):
The Buffered DAC Outputs.
V
CC
(Pins 9, 15):
The Positive Supply Input. 4.5
V
CC
5.5V (LTC1454), 2.7V
V
CC
5.5V (LTC1454L). Re-
quires a bypass capacitor to ground.
REFOUT (Pin 10):
The Output of the Internal Reference.
REFHI A, REFHI B (Pins 11,14):
The Inputs to the DAC
Resistor Ladder for DAC A/B.
REFLO (Pin 12):
The Bottom of the DAC Resistor Ladder
for Both DACs. This can be used to offset zero-scale above
ground. REFLO should be connected to ground when no
offset is required.
GND (Pin 13):
Ground.
相關(guān)PDF資料
PDF描述
LTC1454L Dual 12-Bit Rail-to-Rail Micropower DACs(3V,雙路12位滿幅度微功耗電壓輸出數(shù)模轉(zhuǎn)換器)
LTC1456IN8 12-Bit Rail-to-Rail Micropower DAC with Clear Input
LTC1456 Low-Power LinCMOS(TM) Quad Comparator with Totem Pole Output 14-SOIC -55 to 125
LTC1456C 12-Bit Rail-to-Rail Micropower DAC with Clear Input
LTC1456CN8 Low-Power LinCMOS(TM) Quad Comparator with Totem Pole Output 14-SOIC -55 to 125
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