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參數(shù)資料
| 型號： | TC7652 |
| 廠商： | TelCom Semiconductor, Inc. |
| 英文描述： | LOW NOISE, CHOPPER-STABILIZED OPERATIONAL AMPLIFIER |
| 中文描述： | 低噪聲，斬波穩(wěn)定運(yùn)算放大器 |
| 文件頁數(shù)： | 5/6頁 |
| 文件大?。?/td> | 90K |
| 代理商： | TC7652 |
3-285
TELCOM SEMICONDUCTOR, INC.
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Figure 4 shows the clamp circuit of a zero-offset com-
parator. Because the clamp circuit requires the inverting
input to follow the input signal, problems with a chopper-
stabilized op amp are avoided. The threshold input must
tolerate the output clamp current
≈
V
IN
/R without disrupting
other parts of the system.
Figure 5 shows how the TC7652 can offset-null high
slew-rate and wideband amplifiers.
Mixing the TC7652 with circuits operating at
±
15V
requires a lower supply voltage divider with the TC7660
voltage converter circuit operated "backwards." Figure 6
shows an approximate connection.
Figure 6. Splitting +15V With the 7660 at >95% Efficiency
Figure 1. Noninverting Amplifier With Optional Clamp
Figure 2. Inverting Amplifier With Optional Clamp
Figure 5. 1437 Offset-Nulled by TC7652
2
4
5
3
8
TC
7660
6
10 μF
1 M
10 μF
+15V
+7.5V
0V
TC7652
+
–
OUTPUT
CLAMP
INPUT
0.1 μF
R2
R1
R3
0.1 μF
+
–
OUTPUT
INPUT
R2
R1
CLAMP
0.1 μF
0.1 μF
TC7652
+
–
+
–
+15V
–15V
–7.5V
0.1
μF
IN
OUT
–7.5V
0.1
μF
10 k
TC7652
741
Some Applications
Figures 1 and 2 show basic inverting and noninverting
amplifier circuits using the output clamping circuit to enhance
overload recovery performance. The only limitations on
replacing other op amps with the TC7652 are supply voltage
(
±
8V maximum) and output drive capability (10k
load for
full swing). Overcome these limitations with a booster circuit
(Figure 3) to combine output capabilities of the LM741 (or
other standard device) with input capabilities of the TC7652.
These two form a composite device; therefore, when adding
the feedback network, monitor loop gain stability.
Figure 3. Using 741 to Boost Output Drive Capability
+
–
TC7652
OUT
IN
+
–
22 k
22 k
FAST
AMPLIFIER
Figure 4. Low Offset Comparator
TC7652
+
–
VOUT
CLAMP
VIN
0.1 μF
0.1 μF
200 k
to 2 M
VTH
LOW NOISE, CHOPPER-STABILIZED
OPERATIONAL AMPLIFIER
TC7652
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TC7652 | Low Noise, Chopper Stabilized Operational Amplifier |
| TC7652CPA | Low Noise, Chopper Stabilized Operational Amplifier |
| TC7652CPD | Low Noise, Chopper Stabilized Operational Amplifier |
| TC7652CPA | LOW NOISE, CHOPPER-STABILIZED OPERATIONAL AMPLIFIER |
| TC7652CPD | LOW NOISE, CHOPPER-STABILIZED OPERATIONAL AMPLIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC7652_13 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Low Noise, Chopper Stabilized Operational Amplifier |
| TC7652CPA | 功能描述:運(yùn)算放大器 - 運(yùn)放 Low Noise Op Amp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| TC7652CPD | 功能描述:運(yùn)算放大器 - 運(yùn)放 Low Noise RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| TC7652IJA | 功能描述:運(yùn)算放大器 - 運(yùn)放 Low Noise RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| TC7652IJD | 功能描述:運(yùn)算放大器 - 運(yùn)放 Low Noise RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
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