Sharp DV-500D Technical Manual page 102

12-5. IC702 BA6796FP
MOTOR DRIVER
Pin No. Terminal name
1 OPOUT Ope amp. output terminal
2 CH4-IN CH4 Input terminal
3 CH4-IN' CH4 Gain adjustment input terminal
4 CTL1 Contorol 1 input terminal
5 CTL2 Contorol 2 input terminal
6 FWD Tray forward input terminal
7 REV Tray reverse input terminal
8 TRAY-IN Tray input terminal
9 GND Sub-straight GND
10 CH5-OUT- Tray negative output terminal
11 COM-OUT Tray positive output terminal/CH4
negative output terminal
12 CH4-OUT+ CH4 Positive output terminal
13 CH3-OUT+ CH3 Positive output terminal
14 CH3-OUT- CH3 Negative output terminal
Note 1: Positive and negative output have polarity with respect to input. (An example: 19 pin input 'H': 18 pin output 'H')
Note 2: Tray positive output and tray negative output have polarity with respect to mode. (An example: 11 pin output
'H' in FORWARD mode)
12-5-1. Block Diagram
28
-
1
12-5-2. Mode change table
CTL1 and CTL2
CTL1 CTL2 CH1
L L
L H
H L
H H OFF
Note: OFF state: Output has high impedance.
Operation function
CH3-IN CH2-IN
25 24 23 22
27 26
10K
13.3K
+
-
+
Level shift
T.S.D
+
-
26.6K
LOGIC
10K
CTL1 CTL2 PWD REV
2 3 4 5 6
CH4-IN CH5-IN
CH2 CH3 CH4
OFF
ON
ON OFF
Pin No. Terminal name
15 CH2-OUT-
16 CH2-OUT+
17 CH1-OUT-
18 CH1-OUT+
19 CH1-IN
20 CH1-IN'
21 VCC
22 CH2-IN
23 CH2-IN'
24 CH3-IN
25 CH3-IN'
26 VREF-IN
27 OPIN+
28 OPIN-
CH1-IN
21 20 19
VCC
10K
10K
13.3K
13.3K
Level shift
-
-
+
+
Level shift
Level shift
D
V/I
7 8 9 10
CH5-OUTCH4-OUT CH3-OUT
For F and R (CH5 control, valid only when CH5 is ON)
F
CH5
L
ON
L
H
OFF
H
ON
12-9
Operation function
CH2 Negative output terminal
CH2 Positive output terminal
CH1 Negative output terminal
CH1 Positive output terminal
CH1 Input terminal
CH1 Input terminal for gain adjustment
VCC
CH2 Input terminal
CH2 Input terminal for gain adjustment
CH3 Input terminal
CH3 Input terminal for gain adjustment
Bias amp. input terminal
Operational amplifier nonreverse input terminal
Operational amplifier reverse input terminal
CH1-OUT CH2-OUT
18 17 16 15
D
D D D
D D D D
11 12 13 14
T.S.D ; Thermal shutdown
D; Drive buffer
Unit of resistance is [Ω].
R Output mode
L High impedance
H Reversing (reverse)
L Forward rotation (forward)
H Brake
DV-560H