參數(shù)資料
型號: TC850ILW
廠商: Microchip Technology
文件頁數(shù): 26/26頁
文件大小: 0K
描述: IC ADC 15BIT FAST 44PLCC
標(biāo)準(zhǔn)包裝: 27
位數(shù): 15
采樣率(每秒): 40
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
電壓電源: 雙 ±
工作溫度: -25°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 44-LCC(J 形引線)
供應(yīng)商設(shè)備封裝: 44-PLCC
包裝: 管件
輸入數(shù)目和類型: 1 個差分,單極
2006 Microchip Technology Inc.
DS21479C-page 9
TC850
4.0
ANALOG SECTION
DESCRIPTION
The TC850 analog section consists of an input buffer
amplifier, integrator amplifier, comparator and analog
switches. A simplified block diagram is shown in
4.1
Conversion Timing
Each conversion consists of three phases:
1.
Zero Integrator
2.
Signal Integrate
3.
Reference Integrate (or De-integrate)
Each conversion cycle requires 1280 internal clock
FIGURE 4-1:
Analog Section Simplified Schematic
FIGURE 4-2:
Conversion Timing
RINT
INTIN
INTOUT
CINT
INT
Buffer*
BUFF
Integrator*
Comparator*
To Digital
Section
DE1
(+)
DE
Z1
DE
DE1
(+)
DE1
(-)
DE1
(-)
DE2
(+)
DE2
(-)
DE1
(+)
DE1
(-)
REF2+
+
-
+
+
TC850
CREF1+
CREF2-
CREF2
CREF1-
CREF2-
REF1+
REF1-
CREF1
IN+
IN-
ANALOG
COMMON
*Auto Zeroed Amplifiers
Conversion
Phase
Internal
Clock
Signal Integrate
Zero Integrator
Reference Integrate
1280 Clock Cyles
246
256
778
. . . . . . .
. . . . . . . . . . . .
. .
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