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參數(shù)資料
| 型號： | TC3403VQRRT |
| 元件分類： | ADC |
| 英文描述： | 4-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO16 |
| 封裝： | QSOP-16 |
| 文件頁數(shù)： | 10/13頁 |
| 文件大?。?/td> | 90K |
| 代理商： | TC3403VQRRT |
6
TC3403
TC3403-1 3/30/00
+1.8V, Low Power, Quad-Input, 16-Bit
∑ –
A/D Converter with a Power Fault Monitor
and Microprocessor Reset Circuit
2001 Microchip Technology Inc.
DS21412A
FUNCTIONAL BLOCK DIAGRAM
Power Fail Detector
The power fail detector is a comparator in which the
inverting input is connected to the internal voltage reference,
the non-inverting input is the PFI pin of the TC3403 and the
PFO pin is the active low, open collector output. This
comparator is suitable as an early warning fail or low battery
indicator. In a typical application, where a voltage regulator
is being used to supply power to a system, the power fail
comparator would monitor the input voltage to the regulator
while the VDD monitor would measure the output voltage of
the regulator. Both PFO and RESET would drive interrupt
pins of a microcontroller.
The Power Fail detector, may be used as a Wake-up or
Watch-dog Timer. The Typical Application Circuit on Page
1 shows an RC network on PFI with the capacitor tied to a
tri-stated
C I/O pin. If R4 is 1 M and C2 is 10F, the time
constant is roughly ten seconds. The
C resets the RC
network by driving the I/O tied to PFI low and then tri-stating
it. The RC network will ramp to 1.23V in roughly 9 seconds,
assuming a VBATT of 3.0V. With PFO tied to a C input or
interrupt, the
C will see a low-to-high transition on PFO
when voltage on PFI exceeds 1.23V. The PFO output is
guaranteed to be valid for VDD = 1.3 to 5.5V.
A0
IN2+
IN3+
SDAT
REFIN
REFOUT
SCLK
CLOCK
GENERATOR
AND CONTROL
CIRCUITRY
DATA
SHIFT
REG
∑ –
Modulator
1 of 4
AMux
+
–
+
–
x2
CONV
done
CONVCLK
DQ
SET
CLR
1.193V
VDD
CLK
OUT
Start
Conv.
DQ
SET
CLR
A1
IN1+
+
–
IN4+
+
–
PFO
PFI
+
–
1.205V
RESET DELAY
TIMER
+
–
RESET
VTH
1.205V
GND
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| TC3403VQRTR | 4-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO16 |
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| TC3403VPE | 4-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDIP16 |
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相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC3403VQRTR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 1.8V Lw Pwr Quad RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| TC3404 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:+1.8V Low Power, Quad Input, 16-Bit Sigma-Delta A/D Converter with a Power Fault Monitor |
| TC3404_05 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:+1.8V Low Power, Quad Input, 16-Bit Sigma-Delta A/D Converter with a Power Fault Monitor |
| TC3404VPE | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 1.8V Lw Pwr Quad RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| TC3404VQR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 1.8V Lw Pwr Quad RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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