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參數資料
| 型號： | AD8037AN |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | Low Distortion, Wide Bandwidth Voltage Feedback Clamp Amps |
| 中文描述： | OP-AMP, 10000 uV OFFSET-MAX, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數： | 17/23頁 |
| 文件大小： | 387K |
| 代理商： | AD8037AN |
AD8036/AD8037
REV. A
–17–
closed-loop gain at the output. For instance, to set an output
limit of
±
1 V for an AD8037 operating at a gain of 3.0, V
H
and
V
L
would need to be set to +0.333 V and –0.333 V, respectively.
The only restriction on using the AD8036’s and AD8037’s
+V
IN
, V
L
, V
H
pins as inputs is that the maximum voltage differ-
ence between +V
IN
and V
H
or V
L
should not exceed 6.3 V, and
all three voltages be within the supply voltage range. For ex-
ample, if V
L
is set at –3 V, then V
IN
should not exceed +3.3 V.
0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
INPUT VOLTAGE – +V
IN
1.6
0.6
1.2
0.8
1.0
1.4
O
O
AD8036
OUTPUT CLAMP AMP
CLAMP ERROR – 25mV
AD8036
CLAMP ERROR – >200mV
OUTPUT CLAMP
Figure 73. Output Clamp Error vs. Input Clamp Error
AD8036/AD8037 APPLICATIONS
The AD8036 and AD8037 use a unique input clamping circuit
to perform the clamping function. As a result, they provide the
clamping function better than traditional output clamping de-
vices and provide additional flexibility to perform other unique
applications.
There are, however, some restrictions on circuit configurations;
and some calculations need to be performed in order to figure
the clamping level, as a result of clamping being performed at
the input stage.
The major restriction on the clamping feature of the AD8036/
AD8037 is that clamping occurs only when using the amplifiers
in the noninverting mode. To clamp in an inverting circuit, an
additional inverting gain stage is required. Another restriction is
that V
H
be greater than V
L
, and that each be within the output
voltage range of the amplifier (
±
3.9 V). V
H
can go below ground
and V
L
can go above ground as long as V
H
is kept higher than V
L
.
Unity Gain Clamping
The simplest circuit for calculating the clamp levels is a unity
gain follower as shown in Figure 74. In this case, the AD8036
should be used since it is compensated for noninverting unity
gain.
This circuit will clamp at an upper voltage set by V
H
(the voltage
applied to Pin 8) and a lower voltage set by V
L
(the voltage ap-
plied to Pin 5).
Clamping with Gain
Figure 75 shows an AD8037 configured for a noninverting gain
of two. The AD8037 is used in this circuit since it is compen-
sated for gains of two or greater and provides greater band-
width. In this case, the high clamping level at the output will
+5V
R
F
140
V
–5V
130
V
V
H
V
L
V
IN
V
OUT
0.1
m
F
10
m
F
0.1
m
F
AD8036
0.1
m
F
10
m
F
V
H
0.1
m
F
V
L
Figure 74. Unity Gain Noninverting Clamp
occur at 2
×
V
H
and the low clamping level at the output will be
2
×
V
L
. The equations governing the output clamp levels in cir-
cuits configured for noninverting gain are:
V
CH
=
G
×
V
H
V
CL
=
G
×
V
L
where:
V
CH
is the high
output
clamping level
V
CL
is the low
output
clamping level
G is the gain of the amplifier configuration
V
H
is the high input clamping level (Pin 8)
V
L
is the low input clamping level (Pin 5)
*Amplifier offset is assumed to be zero.
+5V
R
F
274
V
–5V
100
V
V
H
V
L
V
IN
V
OUT
0.1
m
F
10
m
F
0.1
m
F
AD8037
0.1
m
F
10
m
F
V
H
0.1
m
F
V
L
R
G
274
V
49.9
V
Figure 75. Gain of Two Noninverting Clamp
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD8037ANZ | 功能描述:IC OPAMP VF ULDIST LN 70MA 8DIP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:CLAMPIN™ 標準包裝:1 系列:- 放大器類型:通用 電路數:4 輸出類型:滿擺幅 轉換速率:0.028 V/µs 增益帶寬積:105kHz -3db帶寬:- 電流 - 輸入偏壓:3nA 電壓 - 輸入偏移:100µV 電流 - 電源:3.3µA 電流 - 輸出 / 通道:12mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:14-TSSOP 包裝:剪切帶 (CT) 其它名稱:OP481GRUZ-REELCT |
| AD8037AR | 功能描述:IC OPAMP VF ULDIST LN 70MA 8SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:CLAMPIN™ 標準包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數:1 輸出類型:- 轉換速率: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） 供應商設備封裝:8-SOIC 包裝:帶卷 (TR) |
| AD8037AR-REEL | 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk ±6V 8-Pin SOIC N T/R 制造商:Rochester Electronics LLC 功能描述:VLTG-FDBK, G= 2 CLAMP AMP - Tape and Reel |
| AD8037AR-REEL7 | 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk ±6V 8-Pin SOIC N T/R 制造商:Rochester Electronics LLC 功能描述:VLTG-FDBK, G= 2 CLAMP AMP - Tape and Reel |
| AD8037ARZ | 功能描述:IC OPAMP VF ULDIST LN 70MA 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:CLAMPIN™ 標準包裝:2,500 系列:- 放大器類型:通用 電路數:4 輸出類型:- 轉換速率: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） 供應商設備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
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