TDA6500

更新时间： 2024-11-24 21:55:23

品牌	Logo	应用领域
恩智浦 - NXP		振荡器
页数	文件大小	规格书
37页	216K
描述
5 V mixer/oscillator and synthesizer for PAL and NTSC standards

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TDA6500 数据手册

TDA6500; TDA6501

5 V mixer/oscillator and synthesizer for PAL and NTSC

standards

Rev. 02 — 14 June 2005

Product data sheet

1. General description

TDA6500TT and TDA6501TT are programmable 2-mixer, 3-oscillator and synthesizer

MOPLLs intended for pure 3-band tuner concepts.

The device includes two double balanced mixers for the low and mid/high bands and three

oscillators for the low, mid and high bands, respectively. Other functions are an

IF ampliﬁer, a wide-band AGC detector and a PLL synthesizer. Two pins are available

between the mixer output and the IF ampliﬁer input to enable IF ﬁltering for improved

signal handling.

The device can be controlled according to the I²C-bus format.

2. Features

■ Single-chip, 5 V mixer/oscillator and synthesizer for TV and VCR tuners

■ I²C-bus protocol compatible with 3.3 V and 5 V microcontrollers:

◆ Address + 6 data bytes transmission

◆ Address + 1 status byte (I²C-bus read mode)

◆ Four independent I²C-bus addresses

■ Two PMOS open-drain ports with 5 mA source capability to switch high band and FM

sound trap (P2 and P3)

■ One PMOS open-drain port P1 with 20 mA source capability to switch the mid band

■ One PMOS open-drain port P0 with 10 mA source capability to switch the low band

■ Five step, 3-bit Analog-to-Digital Converter (ADC) and NPN open-collector general

purpose port P6 with 5 mA sinking capability

■ NPN open-collector general purpose port P4 with 5 mA sinking capability

■ Internal AGC ﬂag

■ In-lock ﬂag

■ 33 V tuning voltage output

■ 15-bit programmable divider

■ Programmable reference divider ratio: 64, 80 or 128

■ Programmable charge pump current: 60 µA or 280 µA

■ Varicap drive disable

■ Balanced mixer with a common emitter input for the low band (single input)

■ Balanced mixer with a common base input for the mid and high bands (balanced input)

■ 2-pin asymmetrical oscillator for the low band

■ 2-pin asymmetrical oscillator for the mid band

■ 4-pin symmetrical oscillator for the high band

12 3 4 5 6 7...37

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