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參數(shù)資料
| 型號： | TC1027CEOR |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 15/18頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC COMPARATOR 1.8V QUAD 16SOIC |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 類型： | 帶電壓基準(zhǔn) |
| 元件數(shù)： | 4 |
| 輸出類型： | 滿擺幅 |
| 電壓 - 電源，單路/雙路(±)： | 1.8 V ~ 5.5 V |
| 電壓 - 輸入偏移（最小值）： | 5mV @ 3V |
| 電流 - 輸入偏壓（最小值）： | 100pA @ 5.5V |
| 電流 - 輸出（標(biāo)準(zhǔn)）： | 2mA @ 5.5V |
| 電流 - 靜態(tài)（最大值）： | 26µA |
| CMRR, PSRR（標(biāo)準(zhǔn)）： | 66dB CMRR，60dB PSRR |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 安裝類型： | 表面貼裝 |
| 包裝： | 管件 |
TC1027
DS21284B-page 6
2002 Microchip Technology Inc.
Capacitor C1 will charge up through R4. When the
voltage at the comparator’s inverting input is equal to
VH, the comparator output will switch. With the output
at ground potential, the value at the non-inverting input
terminal (VL) is reduced by the hysteresis network to a
value given by:
EQUATION 4-7:
Using the same resistors as before, capacitor C1 must
now discharge through R4 toward ground. The output
will return to a high state when the voltage across the
capacitor has discharged to a value equal to VL.The
period of oscillation will be twice the time it takes for the
RC circuit to charge up to one half its final value. The
period can be calculated from:
EQUATION 4-8:
The frequency stability of this circuit should only be a
function of the external component tolerances.
Figure 4-6 shows the circuit for a pulse width modulator
circuit. It is essentially the same as in Figure 4-4, but
with the addition of an input control voltage. When the
input control voltage is equal to one-half VDD, operation
is basically the same as described for the free-running
oscillator. If the input control voltage is moved above or
below one-half VDD, the duty cycle of the output square
wave will be altered. This is because the addition of the
control voltage at the input has now altered the trip
points. The equations for these trip points are shown in
Figure 4-6 (see VH and VL).
Pulse width sensitivity to the input voltage variations
can be increased by reducing the value of R6 from
10k
and conversely, sensitivity will be reduced by
increasing the value of R6. The values of R1 and C1
can be varied to produce the desired center frequency.
FIGURE 4-1:
COMPARATOR
EXTERNAL HYSTERESIS
CONFIGURATION
FIGURE 4-2:
PRECISION BATTERY MONITOR
V
L
V
DD
3
-----------
=
1
FREQ
-----------------
2 0.694
() R4
() C1
()
=
+
–
VDD
VOUT
VSRC
RA
RB
RC
1/4
TC1027
VDD
R2, 330k, 1%
TC1034
1/4
R4, 470k, 1%
R5, 7.5M
1/4
R6, 7.5M
R3, 470k, 1%
R1, 270k, 1%
VR
To System DC/DC
Converter
3V
Alkaline
TC1027
BATTFAIL
BATTLOW
CMPTR1
+
–
CMPTR2
+
–
AMP1
+
–
+
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC1027CEORTR | 功能描述:校驗器 IC Quad Low-Pwr & VR RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| TC1027CEPE | 功能描述:校驗器 IC Quad Low-Pwr & VR RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| TC1027CEPR | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Linear Building Block - Quad Low Power Comparator and Voltage Reference |
| TC1027CEQR | 功能描述:校驗器 IC Quad Low-Pwr & VR RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| TC1027CEQRTR | 功能描述:校驗器 IC Quad Low-Pwr & VR RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
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