TC9400CPD Microchip Technology, TC9400CPD Datasheet - Page 14

• Manufacturer Part Number: TC9400CPD
• Description: IC V-FREQ/FREQ-V CONV 14DIP
• Manufacturer: Microchip Technology
• Type: Volt to Freq & Freq to Voltr

Specifications of TC9400CPD

• Package / Case: 14-DIP (0.300", 7.62mm)
• Frequency - Max: 100kHz
• Full Scale: ±40ppm/°C
• Linearity: ±0.05%
• Mounting Type: Through Hole
• Supply Voltage (max): 15 V
• Supply Voltage (min): 8 V
• Maximum Operating Temperature: 70 C
• Minimum Operating Temperature: 0 C
• Dual Supply Voltage: +/- 5 V
• Full Scale Frequency: 100 KHz
• Linearity Error: +/- 0.25 % FSR
• Maximum Dual Supply Voltage: +/- 7.5 V
• Minimum Dual Supply Voltage: +/- 4 V
• Mounting Style: Through Hole
• Operating Supply Voltage: 9 V or 12 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 158-1140; 158-1140

TC9400/9401/9402
FIGURE 7-4:
7.4
The output of the TC9400 has a sawtooth ripple super-
imposed on a DC level. The ripple will be rejected if the
TC9400 output is converted to a digital value by an inte-
grating analog-to-digital converter, such as the TC7107
or TC7109. The ripple can also be reduced by increas-
ing the value of the integrating capacitor, although this
will reduce the response time of the F/V converter.
The sawtooth ripple on the output of an F/V can be
eliminated without affecting the F/V's response time by
using the circuit in Figure 7-5. The circuit is a capaci-
tance multiplier, where the output coupling capacitor is
multiplied by the AC gain of the Op Amp. A moderately
fast Op Amp, such as the TL071, should be used.
DS21483B-page 14
-5V
F
IN
2kΩ
Output Filtering
Offset
Adjust
"Frequency
Input Level
Figure 7-1:
Shifter"
+5V
See
100kΩ
2.2kΩ
DC - 10kHz CONVERTER
2
Zero Adjust
Threshold
Detect
I
BIAS
11
1
10kΩ
TC9400A
TC9401A
TC9402A
Threshold
Detector
V
SS
4
3µsec
Delay
7
(Typically -5V)
V
V
REF
REF
+5V
V
DD
14
FIGURE 7-5:
42
–
Amp
+
Op
TC9400
GND
V
AMP OUT
6
REF
OUT
I
GND
IN
60pF
12pF
5
3
12
Common
6
Output
F
V
OUT
OUT
F
REF
RIPPLE FILTER
Amp
Out
OUT
©
1M
I
IN
47pF
/2
2002 Microchip Technology Inc.
10
9
8
5
3
12
*Optional/If
Buffer is Needed
*
.001µF
V+
V+
200
R
1MΩ
1M
C
56pF
.01µF 1M
INT
*
REF
*
2
3
+
–
+
7
4
C
1000pF
+5
-5
INT
6
V
TL071
0.1µF
OUT
V
OUT