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参数资料
| 型号： | MX536AJ/D-T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 模拟专用变换器 |
| 英文描述： | RMS TO DC CONVERTER, 0.09 MHz, CDIP14 |
| 文件页数： | 3/13页 |
| 文件大小： | 601K |
| 代理商： | MX536AJ/D-T |
MX536A/MX636
Frequency Response
The MX536A/MX636 utilizes a logarithmic circuit in per-
forming the RMS computation of the input signal. The
bandwidth of the RMS converters is proportional to sig-
nal level. Figures 11 and 12 represent the frequency
response of the converters from 10mV to 7VRMS for the
MX536A and 1mV to 1V for the MX636, respectively.
The dashed lines indicate the upper frequency limits for
1%, 10%, and ±3dB of reading additional error.
Caution must be used when designing RMS measuring
systems so that overload does not occur. The input
clipping level for the MX636 is ±12V, and for the
MX536A it is ±20V. A 7VRMS signal with a crest factor
of 3 has a peak input of 21V.
Application in a Low-Cost DVM
A low-cost digital voltmeter (DVM) using just two inte-
grated circuits plus supporting circuitry and LCD dis-
play is shown in Figure 13. The MAX130 is a 3 1/2 digit
integrating A/D converter with precision bandgap refer-
ence. The 10M
input attenuator is AC coupled to pin
6 of the MX636 buffer amplifier. The output from the
MX636 is connected to the MAX130 to give a direct
reading to the LCD display.
True RMS-to-DC Converters
10
______________________________________________________________________________________
14
13
12
11
10
9
8
1
2
3
4
5
6
7
ABSOLUTE
VALUE
SQUARER
DIVIDER
CURRENT
MIRROR
BUF
VIN
-VS
+VS
VRMS OUT
CAV
IOUT
RL
COMMON
N.C.
dB
N.C.
C2
MX536A
MX636
Figure 7. MX536A/MX636 with a One-Pole Output Filter
14
13
12
11
10
9
8
1
2
3
4
5
6
7
ABSOLUTE
VALUE
SQUARER
DIVIDER
CURRENT
MIRROR
BUF
VIN
-VS
+VS
VRMS OUT
CAV
C3
C2
RX*
* MX536A = 25k
MX636 = 10k
MX536A
MX636
Figure 8. MX536A/MX636 with a Two-Pole Output Filter
0.1
10
1k
10k
1
10
FREQUENCY (Hz)
EDC
ERROR
OR
RIPPLE
(%
OF
READING)
100
PK-PK RIPPLE
RX = 0
PK-PK RIPPLE
(ONE POLE)
C2 = 4.7
F
PK-PK RIPPLE
(TWO POLE)
C2 = C3 = 4.7
F
DC ERROR
(ALL FILTERS)
MX536A
2.2
F
1
F
2.2
F
2.2
F
1
F
MX636
4.7
F
1
F
4.7
F
4.7
F
1
F
ONE-POLE FILTER
C2
CAV
TWO-POLE FILTER
C2
C3
CAF
Figure 9. Performance Features of Various Filter Types for
MX536A/MX636
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MX536AJED | 制造商:未知厂家 制造商全称:未知厂家 功能描述:RMS-to-DC Converter |
| MX536AJEDD | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MX536AJEJD | 制造商:未知厂家 制造商全称:未知厂家 功能描述:RMS-to-DC Converter |
| MX536AJEPD | 制造商:未知厂家 制造商全称:未知厂家 功能描述:RMS-to-DC Converter |
| MX536AJETW | 制造商:未知厂家 制造商全称:未知厂家 功能描述:RMS-to-DC Converter |
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