2-CH MOTOR DRIVER KA9257 monolithic integrated circuit, suitable
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KA9257
2-CH MOTOR DRIVER
KA9257 monolithic integrated circuit, suitable 2-CH motor driver CD/CD-ROM/DVD systems. 12-SIPH-B
FEATURES
channel driver input bias (lib=30nA) Built phase compensation capacitor Improved crosstalk (CT=80dB)
ORDERING INFORMATION
Device KA9257 Package Operating Temperature 12-SIPH-B
BLOCK DIAGRAM
MUTE
FOCUS AMP1
FOCUS AMP2
MUTE
TRACKING AMP1
TRACKING AMP2
TRACKING AMP2
TRACKING AMP1
FOCUS AMP1
FOCUS AMP2
PM-97-D013 April 1997.
BIAS
KA9257
ABSOLUTE MAXIMUM RATING (Ta=25
Characteristics Supply Voltage Power Dissipation Operating Temperature Storage Temperature Symbol TOPR TSTG Value +150
Unit
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, Ta=25 =8V, f=1kHz) Characteristics Quiescent Circuit Current Input Bias Current Input Bias Current Output Offset Voltage Maximum Source Current Maximum Sink Current Maximum Output Voltage Closed Loop Voltage Gain Cut-off Frequeny Cross-Talk Ripple Rejection Ratio Slew-Rate Symbol ICCQ IBIAS1 IBAIS2 ISOURCE ISINK VO(MAX) VI=0 VI=0 VI=0 VI=0 RL=40hm, VO=GND RL=40hm, VO=VCC VI=2Vrms VI=0.1VRMS VI=0.1Vrms, Down VI=0.1Vrms, 20-20KHz VRR=0.1Vrms, FRR=120Hz VI=0.3VPP Squarewave Test Conditions Unit
PM-97-D013 April 1997.
KA9257
TEST CIRCUIT
KA9257
SW14 100J
SW12
SW10
SW11
SW15
SW13
APPLICATION CIRCUIT
KA9257
100J FOCUS
Precautions designing board, minimum 6cms segregation should allowed between motor drive (KA9257) other components such micom and/or Recorder/Player ICS. stable supply voltage radiation shield effect, Deck needs grounded.
FOCUS ERROR
BIAS
TRACK ERROR
TRACK
SERVO
PM-97-D013 April 1997.
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