cxa2559q Sony Electronics, cxa2559q Datasheet - Page 15

• Manufacturer Part Number: cxa2559q
• Description: Playback Equalizer Amplifier With Music Sensor
• Manufacturer: Sony Electronics

Notes on Operation
1. DIREF pin resistance
2. Playback equalizer amplifier
3. Music sensor
5. Operation mode control method
The CXA2559Q has a mute switch (MUTESW), playback equalizer amplifier select switch (TAPESW), head
input select switch (DRSW), music sensor mode select switch (MSMODE) and music sensor switch (MSSW).
The operation modes for each switch are shown in the following table.
Pin No.
The current on DIREF (Pin 25) is the reference for the playback equalizer amplifier resistor 7k /12k
the comparator threshold value of the music sensor.
Use the resistor with high accuracy for connecting to the DIREF pin.
(The resistance accuracy of 2% <metal-oxide> is recommended.)
The playback equalizer amplifier characteristics are determined by the resistor connected between the IC
internal resistor and PBFB (Pins 31 and 40) and the capacitor connected between PBFB and PBTC (Pins 1
and 30). Use the parts which satisfies the accuracy required for the playback equalizer amplifier.
The resistance and capacitance connected to G2FB (Pin 11) and G1FB (Pin 12) determine the detection
level and high-frequency cut-off.
The response time is determined by the resistance and capacitance connected to MSTC (Pin 13).
Use the parts which satisfies the accuracy required for the music sensor.
17
18
19
20
21
MUTESW
TAPESW
DRSW
MSMODE
MSSW
Pin name
PBIN FORWARD
– 15 –
Low (OPEN)
MUTE OFF
MS ON
70µs
G1
Pin voltage
PBIN REVERSE
MUTE ON
MS OFF
120µs
High
G2
CXA2559Q
and