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參數(shù)資料
| 型號(hào)： | SMP04EPZ |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 3/15頁(yè) |
| 文件大小： | 0K |
| 描述： | IC AMP SAMPLE HOLD CMOS 16DIP |
| 標(biāo)準(zhǔn)包裝： | 25 |
| 放大器類型： | 采樣和保持 |
| 電路數(shù)： | 4 |
| 轉(zhuǎn)換速率： | 4 V/µs |
| 電流 - 輸入偏壓： | 500nA |
| 電壓 - 輸入偏移： | 2500µV |
| 電流 - 電源： | 4mA |
| 電流 - 輸出 / 通道： | 1.2mA |
| 電壓 - 電源，單路/雙路(±)： | 5 V ~ 12 V，±2.5 V ~ 6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 16-DIP（0.300"，7.62mm） |
| 供應(yīng)商設(shè)備封裝： | 16-PDIP |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁(yè)面： | 768 (CN2011-ZH PDF) |
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SMP04
–11–
REV. D
POSITIVE AND NEGATIVE PEAK DETECTOR WITH
HOLD CONTROL (Figure 21)
In this application the top amplifier (Amplifier A) is the positive
peak detector and the bottom amplifier (Amplifier B) is the
negative peak detector. Operation can be analyzed as follows:
Assume that the
S/H switch is closed. As a positive increasing
voltage is applied to VIN, D2 turns on, and D1 turns off, closing
the feedback loop around Amplifier A and the SMP04, causing
the output to track the input. Conversely, in the negative peak
detector circuit at the bottom, D4 turns off and D3 turns on,
holding the last most negative input voltage on the SMP04.
This voltage is buffered to the VO(NEG) output.
As VIN falls in voltage the above conditions reverse, causing the
most positive peak voltage to be held at VO(POS) output. This
voltage will be held until the input has a more positive voltage
than the previously held peak voltage, or a reset condition is
applied.
An optional HOLD control can be used by applying a logic HIGH
to the
PD/H inputs. This HOLD mode further reduces leakage
current through the reverse-biased diodes (D2 and D4) during
peak hold.
VOUT
NEGATIVE
VSS
DGND
VSS
–5V
+5V
1/2 OP221
–5V
+5V
VOUT
POSITIVE
AMPLIFIER A
AMPLIFIER B
R1
20k
D1
1N914
D2
VDD
1/2 SMP04
R2
100
D
S
Q1
SD214
VIN
( 3.5V)
RESET
PD/H
POSITIVE
PD/H
NEGATIVE
SD214
R3
20k
D3
1N914
R4
100
D
S
Q2
D4
G
Figure 21. Positive and Negative Peak Detector with Hold Control
GAIN OF 10 SAMPLE-AND-HOLD (Figure 22)
This application places the SMP04 in a feedback loop of an
amplifier. Because the SMP04 has no sign inversion and the
amplifier has very high open-loop gain, the gain of the circuit is set
by the ratio of the sum of the source and feedback resistances
+12V
VSS
1/4 OP490
+12V
VOUT
0V TO
10V
1/4 SMP04
1k
VIN
0V TO
1.0V
S/H
100k
1N914
8.66k
340
Figure 22. Gain of 10 Sample-and-Hold Amplifier
to the source resistance. When a logic LOW is applied to the
S/H control input, the loop is closed around the OP490,
yielding a gain of 10 (in the example shown) amplifier. When
the
S/H control goes HIGH, the loop opens and the SMP04
holds the last sampled voltage. The loop remains open and the
output is unaffected by the input until a logic LOW is reapplied
to the
S/H control. The pair of back-to-back diodes from the
output of the op amp to the output of the track-and-hold pre-
vents the op amp from saturating when the track-and-hold is in
the hold mode and the loop is open.
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參數(shù)描述 |
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| SMP04EPZ | 制造商:Analog Devices 功能描述:Audio Power Amplifier IC |
| SMP04EQ | 功能描述:IC AMP SAMPLE HOLD CMOS 16CDIP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:J-FET 電路數(shù):2 輸出類型:- 轉(zhuǎn)換速率:3.5 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:30pA 電壓 - 輸入偏移:2000µV 電流 - 電源:200µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-PDIP 包裝:管件 |
| SMP04ES | 功能描述:IC AMP SAMPLE HOLD CMOS 16SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:帶卷 (TR) |
| SMP04ES-REEL | 功能描述:IC AMP SAMPLE HOLD CMOS 16SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:帶卷 (TR) |
| SMP04ESZ | 功能描述:IC AMP SAMPLE HOLD CMOS 16SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源，單路/雙路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
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