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FUJITSU SEMICONDUCTOR DATA SHEET
DS04-13400-2E
LINEAR IC
FREQUENCY-TO-VOLTAGE CONVERTER
MB4206
FREQUENCY-TO-VOLTAGE CONVERTER WITH SINGLE POWER SUPPLY COMPARATOR
The Fujitsu MB4206 is a frequency-to-voltage converter with an on-chip comparator. The MB4206 uses a charge pump driven by a positive-edge Schmitt trigger/flip-flop input so stable operation is achieved against noise signal input. The output of the comparator is zener-clamped to a reference voltage; thus, a precise hysteresis output is obtained. The overall design makes the circuit fairly tolerant of imperfections in the input waveform.
• Conversion coefficient determined by RC pair: VO(F) = FIN • RT • CT • VR • Positive edge-triggered frequency input • Equal internal reference high-level ouput and comparator high level output • Package - 8-pin plastic SIP package (Suffix: -PS)
PLASTIC PACKAGE (SIP-08P-M03)
PIN ASSIGNMENTS s
ABSOLUTE MAXIMUM RATINGS (see NOTE)
Rating Symbol VCC VCC(S) IZ PD TOP TSTG Value 24 40 (t ≤ 50ms) 20 300 (Ta ≤ 85°C) -30 to +85 -55 to +125 (Ta= 25°C) Unit V V mA mW
F/V
8
+
OUT(C) +IN(C) VO(F) /-IN(C) VR GND TC IN(F) V CC
7 6 5 4 3 2 1
_
Power Supply Voltage Surge Voltage at VCC Zener Current Power Dissipation Operating Temperature Storage Temperature
NOTE:
°C °C
Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. Functional operation should be restricted to the conditions as detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
(Front View)
1
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MB4206
Fig. 1 —
MB4206 BLOCK DIAGRAM
V CC 1
5K
IN(F)
2
Charge Pump
+
5.4V
5.4V
5.4V
4
3 TC
6 VO(F) /-IN(C)
7 +IN(C)
8
5
OUT(C) V R
FIG. 2 — TYPICAL HOOKUP AND OPERATING PARAMETERS
VCC 1 RIN f IN 2 7 R3 3 CIN CT RT VO(F) C0 4 6 VO(F) R1 R2 5 8 VO(C)
The following equations define the operating frequency of the comparator. f f IN VO(C) f
L H
. = .
1 CT RT R2+
R2 R1 R3 R1+ R3
. = .
1 CT RT
IN
R2 R3 R 1 R 2 +R 1 R 3 + R 2 R 3 are needed when input noise is
R IN and C excessive. f
L
f
H
f IN
2
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MB4206
s
ELECTRICAL CHARACTERISTICS
(Ta = 25°C, VCC = 12V) Parameter Power Supply Current Symbol ICC VCC VR IL(R)=1mA IL(R)=1mA VIH VIL Condition Value Min 6.5 5.0 2.4 0 1 0.1 II IO K VIH(F)=24V VIL(F)=1.2V VTC=2.5V CT=0.1µF, RT=47kΩ, f=100Hz CT=0.1µF, RT=47kΩ VIO II VICM AV VOL VOH ISINK RL=10kΩ ISINK=3mA IL=0.5mA VOL ≤ 1V
*3
Typ 7.0 5.4 +1.4 4 0.4 1.0 ±0.3 2.0 0.5 100 0.1 5.4 22
Max 10.0 24 5.8 24 1.2 8 0.1 0.58 1.1 10 3.0 VR 0.2 5.8 -
Unit mA V V mV/°C V V V/ms V/ms mA mA mA % mV µA V dB V V mA
Power Supplies
Power Supply Voltage Reference Voltage
Reference Voltage Temperature Coefficient
Input High Voltage Input Low Voltage Positive-edge Negative-edge F/V Converter Input Current Output Current F/V Coefficient*1 Linearity*2 Input Offset Voltage Inpu.