TA1370FG_05 Datasheet, PDF (32/42 Pages) Toshiba Semiconductor – SYNC Processor, Frequency Counter IC for TV Component Signals

Note
Item
HB01 AFC phase detection current
HB02 VCO oscillation start voltage
TA1370FG
SW Mode
S07 S23 S24
OPEN b
a
Test Conditions and Measuring Method (V_CC = 9 V, Ta = 25 ± 3°C, unless otherwise specified)
S26
b (1) BUS control data preset.
(2) Horizontal oscillation frequency is 28.125 kHz (00).
(3) SW7 open. Measure the Voltage of pin 7 V7 (no external supply).
(4) Connect external supply with pin 7, and supply the voltage (V7).
(5) Input signal (below figure) to pin 26 (SYNC1-IN). When INPUT SW is SYNC1-IN , measure V1 and V2 of pin
7 wave form.
(6) Supply V7 − 0.1 V and V7 + 0.1 V to pin 7, then measure V3 and V4.
(7) Calculate by following equations.
ID1 [µA] = (V1 [V] ÷ 1 [kΩ]) × 1000
ID2 [µA] = (V2 [V] ÷ 1 [kΩ]) × 1000
ID3 [µA] = (V3 [V] ÷ 1 [kΩ]) × 1000
ID4 [µA] = (V4 [V] ÷ 1 [kΩ]) × 1000
Pin 26 wave form
35.56 µs
0.25 V
Pin 7 wave form
V1, V3
V2, V4
⎯
⎯
⎯
⎯ (1) Increasing the voltage of pin 11 V_CC form 2.5V, measure the voltage V_VCO when pin 9 appear oscillation
wave form.
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2005-09-05