Kenwood DP-MA5 User Manual

DP-MA5/MAQ
CIRCUIT DESCRIPTION
3. RF amplifier : CXA1571M (IC1)
CXA1571M is an IC developed for compact disc play-
ers. It contains an RF amplifier for 3 spot optical pickup,
focus error amplifier, tracking error amplifier, and APC
circult.
3-1. Block diagram
NC FE BIAS TE
3-2. Pin functions
Pin No. |Pin name! 1/O Function
2 [td | © | APC LD ampiifier output pin.
3 PD | APC LD amplifier input pin.
4 PD1 _| | RF |-V amplifier inverted input pin. Current input by connecting to the photo diode A+C terminals.
| 5 PD1 RF |-V amplifier inverted input pin. Current input by connecting to the photo diode B+D terminals.
7 | F | F I-V amplifier inverted input pin. Current input by connecting to the photo diode F terminal.
8 iE - E -V amplifier inverted input pin. Current input by connecting to the photo diode E terminal.
9 VR O CD voltage output pin of (Vcc+VEE) / 2.
10 ve Connected GND when using dual power supply (+).
H Connected to VR (pin 9) when using a single power supply.
[| 13 | EO ; © | E output of LV amplifier.
14 EI ; - E |-V amplifier feedback input pin. For & I-V amplifier gain adjustment.
15 } TE O Tracking error amplifier output pin.
16 FE-BIAS | | Bias pin on the focus error amplifier non-inverted side. |
17 FE QO Focus error amplifier output pin.
18 RFO ; 0 RF summing amplifier output pin.
19 | RFI ly inverted input pin of RF amplifier. Gain of amplifier is fixed by resistor between RFO and RFI.
20 LD-ON | LD ON / OFF select pin. (Vcc : ON)
14

Kenwood DP-MA5 Specifications

General

Brand	Kenwood
Model	DP-MA5
Category	CD Player
Language	English