TA8029S
2002-02-27
1
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA8029S
FREQUENCY TO VOLTAGE CONVERTER
The TA8029S is a small 9-pin SIP IC incorporating an accurate
frequency / voltage converter and two voltage comparators.
It has a Schmitt input circuit and becomes active on the positive
edge of the input. Its F / V output is stable even when it is
supplied with a high-frequency input. Since the VCC pin connects
to a shunt regulator, stable frequency detection is assured
regardless of the battery voltage. In addition, its wide operating
temperature range allows it to be used for a wide variety of
applications.
FEATURES
l Schmitt input circuit incorporated
l Stable F / V output in response to high-frequency input
l Two comparators served by single power supplies are incorporated.
l Shunt regulator incorporated
l Operating temperature range : from −40~85°C
l Small plastic SIP-9 pin
BLOCK DIAGRAM AND PIN LAYOUT
Weight: 0.92 g (typ.)
TA8029S
2002-02-27
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PIN DESCRIPTION
PIN No. SYMBOL DESCRIPTION
1 IN Frequency input pin. The IC becomes active on the leading edge of the input.
2 TC One-shot pulse setting pin which connects to a capacitor.
3 F / V F / V conversion output pin which connects to an charging capacitor and resistor. The signal
from this pin is also the input to the two built-in comparator.
4 O1
Comparator 1 output pin. This pin provides an NPN transistor open-collector output and has a
current capacity of up to 30mA.
5 GND Grounded
6 I1
+ Non-inverted PNP input pin for comparator 1.
7 I2
+ Non-inverted PNP input pin for comparator 2.
8 O2 Comparator 2 output pin. This pin provides an NPN transistor open-collector output and has a
current capacity of up to 30mA.
9 VCC Power supply pin which connects to a 6V Zener diode.
TIMING CHART
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2002-02-27
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MAXIMUM RATINGS (Ta = 25°C)
CHARACTERISTIC SYMBOL RATING UNIT
Supply Current ICC 30 mA
Input Voltage VIN −0.3~30 V
Output Voltage VOUT −0.3~30 V
Output Current IOUT 30 mA
Power Dissipation PD 350 (Note) mW
Operating Temperature Topr −40~85 °C
Storage Temperature Tstg −55~150 °C
Note: Ta≤85°C
ELECTRICAL CHARACTERISTICS (Ta = 25°C, VCC = 5V)
CHARACTERISTIC SYMBOL PIN
TEST
CIR-
CUIT
TEST CONDITION MIN TYP. MAX UNIT
Current Consumption ICC V
CC ― ― 3.0 5 mA
Regulated Voltage VR V
CC ― I
CC = 12mA 5.5 6.0 6.5 V
Input Current IIN IN ― V
IN = 0~20V −10 ― 10 µA
VIH ― 2.8 ― ―
Input Voltage
VIL
IN
― ― ― 0.8
V
Input Rise Rate VLH IN ― 0.5 ― ― V / ms
Input Fall Rate VHL IN ― 0.1 ― ― V / ms
IOL ― V
TC = 2.5V ― 43 ―
IOH
TC
― V
TC = 2.5V ― −73 ―
Output Current
IOH F / V ― −250 −350 −500
µA
F / V Conversion Coefficient K F / V ― CT = 0.01µF, RT = 27kΩ
f = 100Hz (Note 1) ― 7.8 ― ―
Linearity ― CT = 0.01µF, RT = 27kΩ
(Note 2) ― ±3.0 ― %
Input Offset Voltage VIO I
1
+ / I2
+― ― 2 10 mV
Input Current IIN I
1
+ / I2
+― ― −0.2 −1 µA
Common-mode Input Voltage VCM I
1
+ / I2
+― 0 ― VCC
−1.5 V
Voltage Gain AV ― ― 100 ― dB
Output Voltage VOL O
1 / O2― I
OL = 10mA ― ― 0.5 V
Output Leakage Current ILEAK O
1 / O2― V
O = 16V ― ― 5 µA
Notes:
1. Calculated from VO = K·VCC ·CT·RT·f
2. Straight line deviation at f = 50Hz and f = 150Hz relative to that at f = 100Hz
TA8029S
2002-02-27
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STANDARD CHARACTERISTICS
EXAMPLE OF APPLICATION CIRCUIT
1. FREQUENCY−VOLTAGE CONVERSION CIRCUIT
2. FREQUENCY DETECTION CIRCUIT
RECOMMENDED CONDITION
PART NAME MIN MAX UNIT
CT 1000 pF
RT 20 kΩ
fIN 5 kHz
TA8029S
2002-02-27
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PACKAGE DIMENSIONS
Weight: 0.92g (Typ.)
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2002-02-27
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devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
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In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc..
· The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other
rights of the third parties which may result from its use. No license is granted by implication or otherwise under
any intellectual property or other rights of TOSHIBA CORPORATION or others.
· The information contained herein is subject to change without notice.
000707EAA_S
RESTRICTIONS ON PRODUCT USE
