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參數資料
| 型號： | TC3404VQR |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | +1.8V Low Power, Quad Input, 16-Bit Sigma-Delta A/D Converter with a Power Fault Monitor |
| 中文描述： | 1.8V的低功耗，四路輸入，16位Σ-ΔA / D轉換的電源故障監(jiān)控器 |
| 文件頁數： | 10/16頁 |
| 文件大?。?/td> | 451K |
| 代理商： | TC3404VQR |
TC3404
DS21413B-page 10
2002 Microchip Technology Inc.
3.3
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
TC3404 and the PFO pin is the active low, open drain
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 V
DD
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
Watchdog Timer. The Typical Application circuit shows
an RC network on PFI with the capacitor tied to a
tristated
μ
C I/O pin. If R4 is 1 M
and C2 is 10
μ
F, the
time constant is roughly ten seconds. The
μ
C resets
the RC network by driving the I/O tied to PFI low and
then tristating it. The RC network will ramp to 1.23V in
roughly 9 seconds, assuming a V
BATT
of 3.0V. With
PFO tied to a
μ
C input or interrupt, the
μ
C will see a low
to high transition on PFO when the voltage on PFI
exceeds 1.23V. The PFO output is specified to be valid
for V
DD
= 1.3 to 5.5V.
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| TC3404VPE | +1.8V Low Power, Quad Input, 16-Bit Sigma-Delta A/D Converter with a Power Fault Monitor |
| TC3404 | +1.8V Low Power, Quad Input, 16-Bit Sigma-Delta A/D Converter with a Power Fault Monitor |
| TC3405A | Standalone Linear Li-lon Battery Charger with Thermistor Input |
| TC3405VQR | 16-Bit, Low Cost, Low Power Sigma-Delta A/D Converter |
| TC3405VPE | 16-Bit, Low Cost, Low Power Sigma-Delta A/D Converter |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TC3404VQRTR | 功能描述:模數轉換器 - ADC 1.8V Lw Pwr Quad RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 |
| TC3405 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:16-Bit, Low Cost, Low Power Sigma-Delta A/D Converter |
| TC3405A | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Standalone Linear Li-lon Battery Charger with Thermistor Input |
| TC3405VPE | 功能描述:模數轉換器 - ADC 16-Bit Sigma-Delta RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 |
| TC3405VQR | 功能描述:模數轉換器 - ADC 16-Bit Sigma-Delta RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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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