參數(shù)資料
型號: DC682A
廠商: Linear Technology
文件頁數(shù): 3/20頁
文件大?。?/td> 0K
描述: BOARD SAR ADC LTC1859
軟件下載: QuikEval System
設(shè)計(jì)資源: DC682A Design File
DC682A Schematic
標(biāo)準(zhǔn)包裝: 1
系列: QuikEval™, SoftSpan™
ADC 的數(shù)量: 1
位數(shù): 16
采樣率(每秒): 100k
數(shù)據(jù)接口: MICROWIRE?,串行,SPI?
工作溫度: 0°C ~ 70°C
已用 IC / 零件: LTC1859
已供物品:
相關(guān)產(chǎn)品: LTC1859CG#PBF-ND - IC ADC 8CH 16BIT 100KSPS 28-SSOP
LTC1859IG#PBF-ND - IC A/D CONV 8CH 16BIT 28-SSOP
LTC1859IG#TRPBF-ND - IC A/D CONV 8CH 16BIT 28-SSOP
LTC1859CG#TRPBF-ND - IC A/D CONV 8CH 16BIT 28-SSOP
LTC1857/LTC1858/LTC1859
11
185789fa
APPLICATIONS INFORMATION
LT1227: 140MHz video current feedback amplier. 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.
LT1677: Single, low noise op amp. Rail-to-rail input and
output. Up to ±15V supplies.
3000pF
1859 F02
AIN
+
AIN
CH0
CH1
MUXOUT+
MUXOUT
ADC+
ADC
Figure 2. Analog Input Filtering
Figure 1. LTC1857/LTC1858/LTC1859 Simplied Equivalent Circuit
LT1792: Single, low noise JFET input op amp, ±5V sup-
plies.
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 LTC1857/LTC1858/LTC1859 have an on-chip, tem-
perature compensated, curvature corrected, bandgap
reference, which is factory trimmed to 2.50V. The full-scale
range of the LTC1857/LTC1858/LTC1859 is equal to ±5V,
0V to 5V, ±10V or 0V 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
2.5V
REFERENCE
INTERNAL
CLOCK
1.6384X
4.096V
8k
AGND1
CONTROL
LOGIC
SERIAL I/O
INPUT MUX
AND
RANGE
SELECT
AGND3
AGND2
REFCOMP
VREF
ADC
MUXOUT+
MUXOUT
ADC+
DGND
AVDD
DVDD
MUX ADDRESS AND RANGE
DATA OUT
CONVST
SDI
SCK
OVDD
SDO
1859 BD
12-/14-/16-BIT
SAMPLING ADC
+
COM
CH7
CH1
CH0
BUSY
RD
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