參數(shù)資料
型號(hào)： TC7129CLW
元件分類(lèi)： ADC
英文描述： 1-CH DUAL-SLOPE ADC, ACCESS, PQCC44
封裝： PLASTIC, LCC-44
文件頁(yè)數(shù)： 3/17頁(yè)
文件大?。?/td> 185K
代理商： TC7129CLW
11
TC7129
4-1/2 DIGIT ANALOG-TO-DIGITAL
CONVERTER WITH ON-CHIP LCD DRIVERS
INTEGRATE
DEINTEGRATE
TIME
CLOCK PULSES
OVERSHOOT DUE TO ZERO CROSSING
BETWEEN CLOCK PULSES
INTEGRATOR RESIDUE VOLTAGE
OVERSHOOT CAUSED BY
COMPARATOR DELAY OF
1 CLOCK PULSE
Figure 10.
Accuracy Errors in Dual-Slope Conversion
Figure 11. Integrator Waveform
INT1
INTEGRATE
DE1
DEINTEGRATE
REST X10
ZERO
INTEGRATE
AND LATCH
DE2 REST X10
DE3
ZERO INTEGRATE
INTEGRATOR
RESIDUAL VOLTAGE
TC7129
NOTE: Shaded area greatly expanded
in time and amplitude.
Inside the TC7129
Figure 12 shows a simplified block diagram of the
TC7129.
Integrator Section
The integrator section includes the integrator, compara-
tor, input buffer amplifier, and analog switches used to
change the circuit configuration during the separate mea-
surement phases described earlier.
Digital Auto-Zeroing
To eliminate the effect of amplifier offset errors, the
TC7129 uses a digital auto-zeroing technique. After the
input voltage is measured as described above, the mea-
surement is repeated with the inputs shorted internally. The
reading with inputs shorted is a measurement of the internal
errors and is subtracted from the previous reading to obtain
a corrected measurement. Digital auto-zeroing eliminates
the need for an external auto-zeroing capacitor used in other
ADCs.
相關(guān)PDF資料
PDF描述
TC7129CKW 1-CH DUAL-SLOPE ADC, ACCESS, PQFP44
TC7131CLW 1-CH DUAL-SLOPE ADC, ACCESS
TC7131CPL 1-CH DUAL-SLOPE ADC, ACCESS, PDIP40
TC7135C/PI 1-CH 4-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PDIP28
TC7135C/LI 1-CH 4-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PQCC28
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TC7129CLW713 功能描述:LCD 驅(qū)動(dòng)器 w/LCD Driver RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TC7129CPL 功能描述:LCD 驅(qū)動(dòng)器 w/LCD Driver RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TC7129CPL713 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers
TC7129IJL713 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers
TC7129IKW713 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers
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