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U2510B-M データシート(PDF) 2 Page - ATMEL Corporation |
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U2510B-M データシート(HTML) 2 Page - ATMEL Corporation |
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2 / 15 page  U2510B Rev. A3, 23-Feb-01 2 (15) Order Information Extended Type Number Package Remarks U2510B-M SDIP28 U2510B-M__T SDIP28 VS < 6 V supply voltage Pin Description 1 2 3 4 5 6 7 8 10 9 27 22 21 20 18 19 17 12 11 28 25 26 23 24 FM-AFC FMOsc VRef FMtank AMtank FM-AGC Vol ctrl in AMOsc FMin CF FM-discr Mute AM/FM detect VAGC/AFC AFC switch IF-GND LED drive VTreble in Ripple in AFin FM-IFin VS AFout AF-GND 16 15 14 13 14812 FE-GND AM/FM IFout AM-IFin Mode ctrl switch Figure 2. Pinning Pin Symbol Function 1 Mute Mute voltage output, time constant (C23), mute depth and threshold adjustable by load resistance (R3) 2 FM-discr FM discriminator filter connection, ceramic resonator or equivalent LC-circuit 3 CF Audio negative feedback input. Blocking capacitor (C8) determines the audio amplifiers low-end cut-off frequency 4 Vol ctrl in Input for volume control voltage Pin Symbol Function 5 AMOsc AM oscillator tank circuit input, recommended load impedance approximately 2.5 k W 6 FM–AFC AFC diode connection, coupling capacitor (C19) determines the AFC characteristic (holding range and slope) 7 FMOsc FM oscillator tank circuit input, recommended load impedance approximately 3 k W 8 VRef Regulated voltage output (2.4 V) 9 FMtank FM RF tank circuit connection, recommended load impedance approximately 3 k W 10 AMtank AM RF tank circuit connection, recommended load impedance approximately 20 k W 11 FM-AGC FM AGC voltage output, time constant (C20). Loading this pin by a resistor (to GND) will increase the FM AGC threshold, grounding this pin will switch off the FM AGC function 12 FMin FM RF input (common-base preamplifier transistor), recommended (RF) source impedance approximately 100 W 13 FE-GND FM front-end ground 14 AM/FM IFout AM/FM IF output (collector output of the IF preamplifier) 15 Mode ctrl switch Mode control input: Pin | Function open | FM Ground | AM VS (R4 = 10 kW) | Tape 16 AM-IFin AM IF input, input impedance = 3.1 k W 17 FM-IFin FM IF input, input impedance = 330 W 18 VTreble in Treble control voltage input 19 LED drive Level indicator output (open-collector output, LED drive) 20 IF-GND IF ground 21 AFC switch AFC function control input: Pin | Function open | AFC off Ground | fOSC > fin VS | fOSC < fin 22 VAGC/AFC AGC/AFC voltage, time constant adjust (C10), input impedance approximately 42 k W 23 AM/FM detect AM/FM detector output, the load capacitor (C11) in conjunction with the detector output resistance (7.5 k W) determines the (FM) deemphasis as well as the (modulation) frequency response of the AM detector 24 AFin Audio amplifier input, input resistance approximately 100 k W, coupling capacitor (C9) determines the low frequency response 25 Ripple in Ripple filter connection. Load capacitance (C12) determines the frequency response of the supply-voltage ripple rejection 26 VS Supply voltage input 27 AFout Audio amplifier output 28 AF-GND Ground of the audio power stage |
同様の部品番号 - U2510B-M |
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同様の説明 - U2510B-M |
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