Details, datasheet, quote on part number: LA2650
PartLA2650
CategoryAnalog & Mixed-Signal Processing
DescriptionBass Boost ic
CompanySanyo Semiconductor Corporation
DatasheetDownload LA2650 datasheet
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Features, Applications

The is a bass boost IC developed for use in minicomponent stereo systems, TV sets, and radio/cassette player products. The cutoff frequency is determined by external capacitors, and the boost gain, addition level, and boost on/off state can be controlled by a microcontroller.

Left and right channel boost addition on/off Bass output pin for use in 3D systems Boost on/off LED on/off 8-bit serial microprocessor interface

Features

The bass boost gain is variable over a maximum range in 5-dB steps, and the addition level into the left and right channels can be controlled over 35 dB range in 3-dB and 5-dB steps. This allows an optimal boost for the source and volume to be acquired using microprocessor control. Includes two AGC circuits on chip: a level limiter (2 V rms) for the maximum input in low-frequency boost mode and a non-clipping limiter (i.e. clip prevention) circuit. Can be switched between 2D and 3D systems.

Variable boost gain 25, 30, and 35 dB) Boost level limiter, non-clipping limiter Variable boost addition level and 35 dB)

Specifications

Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Pd max Topr Tstg Ta 70C Conditions Ratings to +150 Unit mW C

Parameter Recommended supply voltage Operating voltage range Symbol VCC op Conditions Ratings to 10 Unit V

Parameter Low-level voltage High-level voltage Symbol VIL VIH Conditions Ratings to *5.5 Unit V
Note: When VCC is under 5.7 V, the maximum value shall be VCC 0.2 V.
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Parameter Symbol ICCOT ICCOB VGT Voltage gain VGB BST1 BST2 Boost level: high BST4 BST1 Boost level: low BST2 BST3 Maximum output voltage VO maxT Boost: off Boost: on VIN = 0 dBm, Boost: off VIN = 0 dBm, Boost: on Boost: on, = 50 Hz, BST = 35 dB, ADD = 0 dB, VIN = 30 dBm Boost: on, = 50 Hz, BST = 35 dB, ADD = 0 dB, VIN = 20 dBm Boost: on, = 50 Hz, BST = 35 dB, ADD = 0 dB, VIN = 10 dBm Boost: on, = 50 Hz, BST = 35 dB, ADD = 0 dB, VIN = 0 dBm Boost: on, = 50 Hz, BST = 30 dB, ADD = 6 dB, VIN = 20 dBm Boost: on, = 50 Hz, BST = 30 dB, ADD = 6 dB, VIN = 10 dBm Boost: on, = 50 Hz, BST = 30 dB, ADD = 6 dB, VIN = 0 dBm THD = 1%, Boost: off Conditions Ratings min typ max Unit mA dB dBm mA

VO maxB THD = 1%, Boost: on THD T VIN = 10 dBm, Boost: off, BPF to 30 kHz VIN = 10 dBm, Boost: on, = 50 Hz, LPF = 30 kHz = 0 dB, 10 k, DIN AUDIO, Boost: off = 0 dB, 10 k, DIN AUDIO, Boost: 10 k, JIS A, Boost: off, Boost ADD = off 10 k, JIS A, Boost: on RED LED

Total harmonic distortion THD CT T Crosstalk CT B VNO T Output noise voltage VNO B LED current ILED

Parameter Quiescent current ICCOT Boost: on ICCOB Boost: off Voltage gain VIN = 0 dBm VG T Boost: off VG B Boost: on Boost level: high Boost level: low Maximum output voltage Boost: on, = 50 Hz, BST = 35 dB, ADD 0 dB Boost: on, = 50 Hz, BST = 30 dB, ADD 6 dB THD 1% VO maxT Boost: off VO maxB Boost: on Total harmonic distortion VIN = 10 dBm THD T Boost: off, BPF to 30 kHz THD B Boost: on, = 50 Hz, LPF = 30 kHz Crosstalk = 0 dBm, 10 k, DIN AUDIO CT T Boost: off CT B Boost: on Output noise voltage 10 k, JIS A VNO T Boost: off, Boost ADD = off VNO B Boost: on LED current ILED RED LED H * *=don't care Conditions D7 D8


 

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