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PDF MD3810 Data sheet ( Hoja de datos )
| Número de pieza | MD3810 | |
| Descripción | F/V Converters | |
| Fabricantes | micro networks corporation | |
| Logotipo |  |
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MD3802/3805/3810
2/5/10MHz V/F, F/V Converters
Models MD3802/3805/3810 are high-
performance, precision 2/5/10MHz full-
scale voltage-to-frequency converters,
intended for those applications that
require maximum performance at the
most economical cost. These converters
feature >126/134/142-dB dynamic range,
±0.01/0.02/0.05% linearity, and ±5%
overrange capability.
All models accept a -100µV to -10V full-
scale analog input signal that is converted
to an output signal whose frequency is
proportional to the full-scale frequency
within ±0.01/0.02/0.05% linearity, using
the long-proven charge-balance tech-
nique. The devices offer buffered compli-
mentary TTL-compatible frequency
outputs that will drive capacitive loads
as high as 50 pF.
Features:
s Guaranteed Minimum/
Maximum Specifications
s Wide Dynamic Range
>2,000,000/5,000,000/
10,000,000:1
>126/134/142 dB
s Excellent Linearity
±0.01/0.02/0.05% FSR
±0.01/0.02/0.05% of Input
s Excellent Stability
10 µV/°C Offset
75 ppm/°C Gain
s Voltage or Current Inputs
Models MD3802/3805/3810, in addition
to functioning as V/F converters, can also
be used as F/V converters. In this configu-
ration, the converters will accept frequen-
cies from dc to 2/5/10MHz and will
produce proportional single-ended
output voltages from 0V to -10V.
In applications where overall system
throughput must be maintained at a
specific rate, or where fixed offset or
different scale voltages would be more
convenient, custom frequencies and/or
custom trimming can be easily accommo-
dated. By increasing the full-scale output
frequency by 10 to 20%, for example,
additional time would be available for
the system microprocessor to access the
results of each conversion. Please contact
the factory to discuss your specific timing
requirements.
All models are packaged in a 1.31"
x 0.80" x 0.15" 24-pin ceramic DIL
package. Power dissipation is lower
than 0.75/0.85/1.0 watts, and operation
to specified accuracy is guaranteed over
the 0°C to +70°C temperature range.
s Offset and Gain Error
Trimmable to Zero
s Complementary Frequency
Outputs-TTL/CMOS
Compatible
s Small 24-Pin DIP
s Low Power <0.75/0.85/1.0W
Applications:
s Precision Integration
s Digital Data Transmission
s Frequency Synthesis
s Analytical Instrumentation
s Medical Instrumentation
s Telemetry
s Data Recording
s Weighing Systems
s Tachometers
s Accelerometers
s Flow Meters
s Robotics
For additional information
regarding Custom Microelectronic
Products and Services, please contact
Micro Networks at:
324 Clark St., Worcester, MA 01606
Tel. (508) 852-5400 • FAX (508) 853-8296
E-Mail – [email protected]
Web Site – http://www.mnc.com
1 page  
MD3802/3805/3810
2/5/10MHz V/F, F/V Converters
tional filtering of the output voltage by the use of
a 2-pole active filter will reduce the output ripple
as shown in Table 1. A representative 2-pole active
filter circuit is shown in figure 4. Suitable compo-
nent values are listed in Table 1. It is recom-
mended that a high input impedance, low noise
op amp be used, and that offset nulling be done
in order to obtain accurate dc performance.
FCUTOFF
20 kHz
25 kHz
30 kHz
50 kHz
100 kHz
C1(pF)
180
150
150
68
33
C2(pF) R1(kΩ) R2(kΩ) Output Ripple (mV)
MD3802 MD3805 MD3810
470 16.2 46.2 70
35
5
330 21.0 39.2 60
20
5
330 17.4 27.4 60
40
5
180 16.9 48.7 50
20
5
100 14.3 53.6 80
20
5
Table 1. Ripple Reduction By Active Filter.
FIN
+15V
6.8µF
AGND
6.8µF
-15V
+5V
6.8µF
DGND
18 +15V
8 20KΩ
10-Turn
-15V
OFFSET
Adjust
1
2, 3, 4
GAIN
5 Adjust
V9 OUT
20
200Ω
10-Turn
22 11 ≤100ppm
Figure 3. F/V Converter Configuration.
FIN
F/V
MD38XX
VOUT
R1 + R2
-
R2 R1
+
C1
C2
VOUT
F? =
1
2∏ R1 R2 C1 C2
Figure 4. Typical 2-Pole Active Filter
V/F/V ANALOG DATA INK – Figure 5 depicts
the MD38XX used as both the V/F and F/V in an
analog data link. Low-level analog data may be
transmitted over considerable distances with no
degradation due to noise using this system, and
with total system linearity of 0.02/0.04/0.10%.
324 Clark St., Worcester, MA 01606
Tel. (508) 852-5400 • FAX (508) 853-8296
E-Mail – [email protected]
Web Site – http://www.mnc.com
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet MD3810.PDF ] | |
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