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AK4537 Datasheet(PDF) 1 Page - Asahi Kasei Microsystems |
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AK4537 Datasheet(HTML) 1 Page - Asahi Kasei Microsystems |
1 / 76 page ASAHI KASEI [AK4537] MS0202-E-04 2005/04 - 1 - GENERAL DESCRIPTION The AK4537 targeted at PDA and other low-power, small size applications. It features a 16-bit stereo CODEC with a built-in Microphone-Amplifier, Headphone-Amplifier and Speaker-Amplifier. Input circuits include a Microphone-Amplifier and an ALC (Auto Level Control) circuit. The AK4537 is available in a 52-QFN, utilizing less board space than competitive offerings. FEATURES 1. Resolution : 16bits 2. Recording Function • Stereo Mic Input • Stereo Line Input • 1st MIC Amplifier : +20dB or 0dB • 2nd Amplifier with ALC +27.5dB ∼ -8dB, 0.5dB Step (MIC input) +12dB ∼ -23.5dB, 0.5dB Step (LINE input) • ADC Performance : S/(N+D) : 79dB, DR, S/N : 83dB (MIC input) S/(N+D) : 88dB, DR, S/N : 91dB (LINE input) 3. Playback Function • Digital De-emphasis Filter (tc=50/15µs, fs=32kHz, 44.1kHz, 48kHz) • Digital Volume (0dB ∼ -127dB, 0.5dB Step, Mute) • Stereo Headphone-Amp - S/(N+D) : 70dB, S/N : 90dB - Output Power : 15mW@16 Ω (HVDD=3.3V) - Click Noise Free at Power ON/OFF • Mono Speaker-Amp with ALC - S/(N+D) : 64dB@150mW, S/N : 90dB - BTL Output - Output Power : 400mW@8 Ω (BEEP Input, HVDD=3.3V) 300mW@8 Ω (MIN Input, ALC2=OFF, HVDD=3.3V) • Mono and Stereo Beep Inputs • Mono Line Output - Differential Output - Performance : S/(N+D) : 89dB, S/N : 95dB • Stereo Line Output - Performance : S/(N+D) : 88dB, S/N : 92dB 4. Power Management 5. Master Clock (1) PLL Mode • Frequencies : 11.2896MHz, 12MHz and 12.288MHz • Input Level : CMOS (2) External Clock Mode • Frequencies : 2.048MHz ∼ 12.288MHz 6. Output Master Clock Frequencies : 32fs/64fs/128fs/256fs 7. Sampling Rate : (1) PLL mode • 8kHz, 11.025kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz (2) External Clock mode • 8kHz ∼ 48kHz 8. Control mode: 4-wire Serial / I 2C Bus 9. Master/Slave mode 16-Bit ∆Σ Stereo CODEC with MIC/HP/SPK-AMP AK4537 |
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Similar Description - AK4537 |
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