LA3235W-E中文资料
Monolithic Linear IC Ordering number : EN4530A
Overview
The LA3235W is a single-chip record system IC for use in 1.5 V headphone stereo products. While previous recording systems were implemented using a dedicated tape drive, by using the LA3235W, such a system can be implemented by adding electronic switching to a playback-only tape drive. Additionally, a compact record/playback system can be implemented with just two chips by combining this IC and the LA4590W 1.5 V preamplifier/power amplifier IC
Functions
?Microphone amplifier (with ALC) ×2
?Microphone monitor amplifier ×2
?Radio amplifier (with ALC) ×2
?Record bias power supply
?Record amplifier ×4 (with forward/reverse switching and muting functions)
?Microphone power supply
?All control circuits, including electronic switching circuits, built in
Features
?Miniature package (48-pin SQFP)
?Built-in microphone and record bias power supplies ?Built-in radio amplifier with ALC circuit
?Systems can be easily controlled from a microprocessor using the built-in electronic switching, power supply, and amplifier block control circuits.Package Dimensions
unit: mm
6134A-SQFP48
SANYO: SQFP48
[LA3235W]
Specifications
Absolute Maximum Ratings at Ta = 25°C
Operating Conditions at Ta = 25°C
Operating Characteristics at Ta = 25°C, V CC1 and V CCRF= 1.2 V, V CC2 = 2.4 V, f = 1 kHz, 0 dBm = 0.775 V, R LMIC= 10 k?, R LRadio= 10 k?, R LMON= 10 k?, R LREC= 3 k?
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Switching Control Block: Operating Mode Table
Note: 1.The high-level voltage for A, B, C, D, and E is close to the V CC2 voltage.
2.The high-level voltage for F is close to the V CCRF voltage.
Block Diagram
Test Circuit Diagram
Application Circuit Example 1
Application Circuit Example 2: Circuit using the LA4590W
Pin Functions: The indicated pin voltages are for V CC1 and RF = 1.2 V and V CC2 = 2.4 V.
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元器件交易网https://www.sodocs.net/doc/a26052129.html,
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LA3235W
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s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.