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参数资料
| 型号： | AD536AJDZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 10/17页 |
| 文件大小： | 552K |
| 描述： | IC TRUE RMS/DC CONV 14-CDIP |
| 产品培训模块： | Introduction to Analog RMS-to-DC Technology: Converters and Applications |
| 标准包装： | 25 |
| 电流 - 电源： | 1.2mA |
| 电源电压： | 5.0V ~ 36V，±3.0V ~ 18V |
| 安装类型： | 通孔 |
| 封装/外壳： | 14-CDIP（0.300"，7.62mm） |
| 供应商设备封装： | 14-CDIP |
| 包装： | 管件 |
| 产品目录页面： | 786 (CN2011-ZH PDF) |
Data Sheet
AD536A
Rev. E | Page 9 of 16
14
13
12
11
10
9
8
1
2
3
4
5
6
7
AD536A
25k&
ABSOLUTE
VALUE
SQUARER/
DIVIDER
CURRENT
MIRROR
BUF
V
IN
NC
V
S
C1, C
AV
C
AV
C2
+V
S
NC
NC
NC
dB
COM
R
L
I
OUT
+V
S
4.6V TO 18V
E
OUT
E
+E
2.5V
OP77
AD580J
R1
500k&
0dB
REF
ADJUST
dB SCALE
FACTOR ADJUST
TEMPERATURE
COMPENSATED
dB OUTPUT
+100mV/dB
V
S
+V
S
V
S
+V
S
dB OUT
3mV/dB
SPECIAL TC COMPENSATION RESISTOR, +3300ppm/癈,
PRECISION RESISTOR COMPANY PART NUMBER AT 35 OR PART NUMBER ST35.
LINEAR
rms
OUTPUT
R6
24.9k&
R3
60.4&
R2
1
1k&
R4
33.2k&
R5
5k&
BUF OUT
BUF IN
0.1礔
7
4
3
6
2
Figure 7. dB Connection
FREQUENCY RESPONSE
The AD536A utilizes a logarithmic circuit in performing the
implicit rms computation. As with any log circuit, bandwidth
is proportional to signal level. The solid lines in the graph of
Figure 8 represent the frequency response of the AD536A at
input levels from 10 mV rms to 7 V rms. The dashed lines indicate
the upper frequency limits for 1%, 10%, and ? dB of reading
additional error. For example, note that a 1 V rms signal produces
less than 1% of reading additional error up to 120 kHz. A 10 mV
signal can be measured with 1% of reading additional error
(100 礦) up to only 5 kHz.
100k
1M
10M
1k
10k
10
1
0.1
0.01
1%
10%
?dB
FREQUENCY Hz
7Vrms INPUT
1Vrms INPUT
100mVrms INPUT
10mVrms INPUT
Figure 8. High Frequency Response
AC MEASUREMENT ACCURACY AND CREST
FACTOR
Crest factor is often overlooked when determining the accuracy
of an ac measurement. The definition of crest factor is the ratio
of the peak signal amplitude to the rms value of the signal
(CF = V
P
/V rms). Most common waveforms, such as sine and
triangle waves, have relatively low crest factors (<2). Waveforms
that resemble low duty cycle pulse trains, such as those occurring
in switching power supplies and SCR circuits, have high crest
factors. For example, a rectangular pulse train with a 1% duty
cycle has a crest factor of 10 (CF = 1n).
Figure 9 illustrates a curve of reading error for the AD536A for
a 1 V rms input signal with crest factors from 1 to 11. A rectan-
gular pulse train (pulse width = 100 祍) was used for this test
because it is the worst-case waveform for rms measurement (all
of the energy is contained in the peaks). The duty cycle and
peak amplitude were varied to produce crest factors from 1 to
11 while maintaining a constant 1 V rms input amplitude.
?= DUTY CYCLE =
CF = 1/?/DIV>
?/DIV>
IN
(rms) = 1 V rms
100祍
T
?/DIV>
O
V
P
0
100祍
T
1
0
1
2
3
4
1 2 3 4 5 6 7 8 9 10 11
CREST FACTOR
Figure 9. Error vs. Crest Factor
1祍 10祍 100祍 1000祍
PULSEWIDTH(祍)
10
1
0.1
1VrmsCF=3
1VrmsCF=10
Figure 10. Error vs. Pulse Width Rectangular Pulse
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD536AJDZ | 制造商:Analog Devices 功能描述:IC, RMS-DC CONV, 0.5%, 450KHZ, DIP-14 |
| AD536AJH | 功能描述:直流/直流开关转换器 RMS/DC CONVERTER IC RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| AD536AJH | 制造商:Analog Devices 功能描述:SEMICONDUCTORSLINEAR |
| AD536AJH/+ | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD536AJHZ | 功能描述:IC CONV TRUE RMS/DC TO-100-10 RoHS:是 类别:集成电路 (IC) >> PMIC - RMS 至 DC 转换器 系列:- 标准包装:46 系列:- 电流 - 电源:1.2mA 电源电压:±18 V，36 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:管件 |
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