参数资料
| 型号： | SMP04ESZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 3/15页 |
| 文件大小： | 0K |
| 描述： | IC AMP SAMPLE HOLD CMOS 16SOIC |
| 标准包装： | 48 |
| 放大器类型： | 采样和保持 |
| 电路数： | 4 |
| 转换速率： | 4 V/µs |
| 电流 - 输入偏压： | 500nA |
| 电压 - 输入偏移： | 2500µV |
| 电流 - 电源： | 4mA |
| 电流 - 输出 / 通道： | 1.2mA |
| 电压 - 电源，单路/双路(±)： | 5 V ~ 12 V，±2.5 V ~ 6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 管件 |
| 产品目录页面： | 768 (CN2011-ZH PDF) |
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| SMP04ESZ | 制造商:Analog Devices 功能描述:Sample & Hold Amplifier |
| SMP04ESZ-REEL | 功能描述:IC AMP SAMPLE HOLD CMOS 16SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:150 系列:- 放大器类型:音频 电路数:2 输出类型:- 转换速率:5 V/µs 增益带宽积:12MHz -3db带宽:- 电流 - 输入偏压:100nA 电压 - 输入偏移:500µV 电流 - 电源:6mA 电流 - 输出 / 通道:50mA 电压 - 电源，单路/双路(±):4 V ~ 32 V，±2 V ~ 16 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:8-TSSOP 包装:管件 |
| SMP04GBC | 制造商:AD 制造商全称:Analog Devices 功能描述:CMOS Quad Sample-and-Hold Amplifier |
| SMP-04V-BC | 制造商:JST Manufacturing 功能描述:4 1 Housing vO 10.5mm 250VDC / 250VAC 3A 85 -25 22-28AWG 11.7mm 7.4mm 制造商:JST Manufacturing 功能描述:4 Position 2.5 mm Pitch Disconnectable Housing Plug 制造商:JST 功能描述:Connector 制造商:JST Manufacturing 功能描述:Connector,Plastic Hsng Lance,Multipole |
| SMP-04V-NC | 制造商:JST Manufacturing 功能描述:Conn Housing PL 4 POS Crimp ST Bag 制造商:JST Manufacturing 功能描述:CONNECTOR HOUSING PLUG 4 WAY PLASTIC 制造商:JST Manufacturing 功能描述:CONNECTOR HOUSING, PLUG, 4 WAY, PLASTIC 制造商:JST Manufacturing 功能描述:2.5mm Wire to Wire connector, Natural colour Plug Housing 制造商:JST Manufacturing 功能描述:Connector 制造商:JST Manufacturing 功能描述:CONNECTOR, HOUSING, PLUG, 4POS, 1ROW, Product Range:JST - SM Series, Contact Termination:-, Gender:Plug, No. of Contacts:4, No. of Rows:1, Pitch Spacing:2.5mm, Contact Plating:-, Contact Material:-, Connector Type:Wire to Board , RoHS Compliant: Yes 制造商:JST Manufacturing 功能描述:CONNECTOR HOUSING, PLUG, 4 WAY, PLASTIC, Series:SM, No. of Positions:4, Pitch Sp |
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