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1999 Apr 14 40
Philips Semiconductors Product specification
Audio processor with head amplifier for VHS hi-fi TDA9605H
14.1 RM and HID control signals
To assure proper input conditions on pin RMHID the RM and HID control signals (see Fig.15) should satisfy the
requirements given in Table 39.
Table 39 Conditions of RM and HID input signal
14.2 Reference current resistor
The requirements for the reference current resistor on pin 28 are:
• R = 39 kΩ±2%
• Temperature coefficient = ±50 ppm/°C.
SIGNAL
HID INPUT SIGNAL ONLY HID AND RM INPUT SIGNALS
CONDITIONS MIN. MAX. CONDITIONS MIN. MAX.
HID LOW 0 V 1.5 V LOW 0 V 0.4 V
HIGH 3 V 5.5 V HIGH 4.3 V 5.5 V
RM grounded −−LOW 0 V 0.4 V
HIGH 4.3 V 5.5 V
Fig.15 RMHID input.
a. HID input only. b. HID and RM input.
handbook, full pagewidth
MGR840
10 kΩ (5 %)
18 kΩ (5 %)
TDA9605H
RMHID
HID
41
10 kΩ (5 %)
18 kΩ (5 %)
TDA9605H
RMHID
HID
RMRM
41