參數(shù)資料
型號: LTC1854CG#PBF
廠商: Linear Technology
文件頁數(shù): 6/24頁
文件大?。?/td> 0K
描述: IC ADC 12BIT 8CH 100KSPS 28SSOP
標(biāo)準(zhǔn)包裝: 47
位數(shù): 12
采樣率(每秒): 100k
數(shù)據(jù)接口: MICROWIRE?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 40mW
電壓電源: 模擬和數(shù)字
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 28-SSOP(0.209",5.30mm 寬)
供應(yīng)商設(shè)備封裝: 28-SSOP
包裝: 管件
輸入數(shù)目和類型: 8 個單端,雙極;4 個差分,雙極
14
LTC1854/LTC1855/LTC1856
185456fa
LT1227: 140MHz video current feedback amplifier. 10mA
supply current.
±5V to ±15V supplies. Low noise and low
distortion.
LT1468/LT1469: Single and dual 90MHz, 16-bit accurate
op amp. Good AC/DC specs.
±5V to ±15V supplies.
LT1677: Single, low noise op amp. Rail-to-rail input and
output. Up to
±15V supplies.
APPLICATIO S I FOR ATIO
WU
UU
3000pF
18545 F02
AIN
+
AIN
CH0
CH1
MUXOUT+
MUXOUT
ADC+
ADC
Figure 2. Analog Input Filtering
Figure 1. LTC1854/LTC1855/LTC1856 Simplified Equivalent Circuit
LT1792: Single, low noise JFET input op amp,
±5V
supplies.
LT1793: Single, low noise JFET input op amp, 10pA bias
current,
±5V supplies.
LT1881/LT1882: Dual and quad, 200pA bias current, rail-
to-rail output op amps. Up to
±15V supplies.
LT1844/LT1885: Dual and quad, 400pA bias current, rail-
to-rail output op amps. Up to
±15V supplies. Faster
response and settling time.
INTERNAL VOLTAGE REFERENCE
The LTC1854/LTC1855/LTC1856 have an on-chip, tem-
perature compensated, curvature corrected, bandgap ref-
erence, which is factory trimmed to 2.50V. The full-scale
range of the LTC1854/LTC1855/LTC1856 is equal to
±10V.
The output of the reference is connected to the input of a
gain of 1.6384x buffer through an 8k resistor (see Figure
3). The input to the buffer or the output of the reference is
2.5V
REFERENCE
INTERNAL
CLOCK
1.6384X
4.096V
8k
AGND1
CONTROL
LOGIC
SERIAL I/O
INPUT MUX
AGND3
AGND2
REFCOMP
VREF
ADC
MUXOUT+
MUXOUT
ADC+
DGND
AVDD
DVDD
MUX ADDRESS
DATA OUT
CONVST
SDI
BUSY
SCK
RD
OVDD
SDO
18545 F01
12-/14-/16-BIT
SAMPLING ADC
+
COM
CH7
CH1
CH0
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