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TDA6508A 数据表(PDF) 4 Page - NXP Semiconductors |
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TDA6508A 数据表(HTML) 4 Page - NXP Semiconductors |
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4 / 42 page  2005 Mar 25 4 Philips Semiconductors Product specification 3-band mixer/oscillator and PLL for terrestrial tuners TDA6508; TDA6508A; TDA6509; TDA6509A loop filter between pin CP and pin VTUNE as shown in Fig.27. The tuning amplifier can supply up to 33 V (max.) at pin VT for controlling any of the internal oscillators via external tank circuits. The phase comparator can operate at 62.5, 50 or 31.25 kHz with a 4 MHz crystal, depending on the reference divider ratio of either 64, 80 or 128; see Table 4. An externally sourced signal having a frequency between 3.58 MHz and 4.43 MHz can be used as a reference frequency for the internal crystal oscillator at any of the reference divider ratios. In test mode, port P3 will output either half the crystal reference frequency (1 ⁄2fref) or half the reference divider frequency (1 ⁄2fdiv); see Table 5. The device can be controlled according to the I2C-bus format; see Table 1. The in-lock flag bit FL is set to logic 1 when the PLL is locked. This flag is read from the status byte on pin SDA during a READ operation; see Table 6 and Table 7. Automatic frequency control is provided using an internal Analog-to-Digital Converter controlled by the voltage on pin ADC. The ADC code is read during a READ operation; see Table 8. The device requires to be addressed by five sequential serial bytes (including the address byte) via the I2C-bus to set the crystal oscillator frequency, program the five ports and to set the charge-pump current; see Table 1. The address byte can have one of four possible device addresses which are selected by applying a specific voltage to pin AS; see Table 3. 4 QUICK REFERENCE DATA Measured over full voltage and temperature ranges. 5 ORDERING INFORMATION SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VCC supply voltage 4.5 5 5.5 V ICC supply current VCC = 5 V; all ports off 43 58 74 mA fxtal crystal oscillator frequency Rxtal =25 Ω to 300 Ω 3.58 4.0 4.43 MHz Ptot total power dissipation − 290 385 mW Tstg IC storage temperature −40 −+150 °C Tamb ambient temperature −20 −+85 °C TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TDA6508TT TSSOP32 plastic thin shrink small outline package; 32 leads body width 6.1 mm SOT487-1 TDA6508ATT TDA6509TT TSSOP32 plastic thin shrink small outline package; 32 leads body width 6.1 mm SOT487-1 TDA6509ATT TDA6509HN HVQFN32 plastic thermal enhanced very thin quad flat package; no leads; 32 terminals; body 5 × 5 × 0.85 mm SOT617-1 TDA6509AHN |
类似零件编号 - TDA6508A |
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类似说明 - TDA6508A |
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