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TDA6405TS データシート(PDF) 9 Page - NXP Semiconductors |
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TDA6405TS データシート(HTML) 9 Page - NXP Semiconductors |
9 / 32 page 1999 Jan 13 9 Philips Semiconductors Product specification 5 V mixer/oscillator-PLL synthesizers for hyperband tuners TDA6404; TDA6405; TDA6405A Table 7 Read data format Note 1. MSB is transmitted first. Table 8 Description of symbols used in Table 7 Table 9 Analog-to-digital converter levels; note 1 Note 1. Accuracy is ±0.03VCC. NAME BYTE BITS ACK MSB(1) LSB Address byte ADB 1 1000 MA1 MA0 R/W=1 A Status byte SB POR FL ACPS 1 1 A2 A1 A0 − SYMBOL DESCRIPTION A acknowledge POR Power-on reset flag (POR = 1 at power-on) FL in-lock flag (FL = 1 when the loop is locked) ACPS automatic charge pump switch flag: ACPS = 0; active ACPS = 1; not active A2, A1 and A0 digital outputs of the 5-level ADC (see Table 9) A2 A1 A0 VOLTAGE APPLIED ON ADC INPUT 1 0 0 0.60VCC to 1.00VCC 0 1 1 0.45VCC to 0.60VCC 0 1 0 0.30VCC to 0.45VCC 0 0 1 0.15VCC to 0.30VCC 0 0 0 0 to 0.15VCC Power-on reset The power-on detection threshold voltage VPOR is set to VCC = 2 V at room temperature. Below this threshold, the device is reset to the power-on state. At power-on state, the charge pump current is set to 280 µA, the tuning voltage output is disabled, the test bits T2, T1 and T0 are set to logic 001 (automatic charge pump switch ‘ON’) and RSB is set to logic 1. PUHF is ‘OFF’, which means that the UHF oscillator and the UHF mixer are switched off. Consequently, the VHF oscillator and the VHF mixer are switched on. PVHFL and PVHFH are ‘OFF’, which means that the VHF tank circuit is working in the VHF I sub-band. The tuning amplifier is switched off until the first transmission. In that case, the tank circuit in VHF I is supplied with the maximum tuning voltage. The oscillator is therefore working at the end of the VHF I sub-band. |
同様の部品番号 - TDA6405TS |
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同様の説明 - TDA6405TS |
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