TDA6650TT datasheet, PDF - EEWORLD Datasheet

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TDA6650TT: DescriptionConsumer Circuit, BICMOS, PDSO38,; CategoryOther integrated circuit (IC) Consumption circuit; File Size311KB，54 Pages; ManufacturerPhilips Semiconductors (NXP Semiconductors N.V.); Websitehttps://www.nxp.com/; Environmental Compliance

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TDA6650TT Overview

Consumer Circuit, BICMOS, PDSO38,

TDA6650TT Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Philips Semiconductors (NXP Semiconductors N.V.)
package instruction	TSSOP, TSSOP38,.25,20
Reach Compliance Code	unknown
Is Samacsys	N
Commercial integrated circuit types	CONSUMER CIRCUIT
JESD-30 code	R-PDSO-G38
Number of terminals	38
Minimum operating temperature	-20 °C
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Encapsulate equivalent code	TSSOP38,.25,20
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
power supply	5 V
Certification status	Not Qualified
Maximum slew rate	136 mA
surface mount	YES
technology	BICMOS
Terminal form	GULL WING
Terminal pitch	0.5 mm
Terminal location	DUAL
Base Number Matches	1

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TDA6650TT; TDA6651TT

5 V mixer/oscillator and low noise PLL synthesizer for hybrid

terrestrial tuner (digital and analog)

Rev. 04 — 8 December 2004

Product data sheet

1. General description

The TDA6650TT; TDA6651TT is a programmable 3-band mixer/oscillator and low phase

noise PLL synthesizer intended for pure 3-band tuner concepts applied to hybrid (digital

and analog) terrestrial and cable TV reception.

The device includes three double balanced mixers for low, mid and high bands, three

oscillators for the corresponding bands, a switchable IF ampliﬁer, a wideband AGC

detector and a low noise PLL synthesizer. The frequencies of the three bands are shown

Table 1.

Two pins are available between the mixer output and the IF ampliﬁer input to

enable IF ﬁltering for improved signal handling and to improve the adjacent channel

rejection.

Table 1:

Band

Low

Mid

High

[1]

Recommended band limits in MHz for PAL and DVB-T tuners

[1]

RF input

Min

44.25

157.25

443.25

Max

157.25

443.25

863.25

Oscillator

Min

83.15

196.15

482.15

Max

196.15

482.15

902.15

RF input frequency is the frequency of the corresponding picture carrier for analog standard.

The IF ampliﬁer is switchable in order to drive both symmetrical and asymmetrical

outputs. When it is used as an asymmetrical ampliﬁer, the IFOUTB pin needs to be

connected to the supply voltage V

CCA

Five open-drain PMOS ports are included on the IC. Two of them, BS1 and BS2, are also

dedicated to the selection of the low, mid and high bands. PMOS port BS5 pin is shared

with the ADC.

The AGC detector provides a control that can be used in a tuner to set the gain of the

RF stage. Six AGC take-over points are available by software. Two programmable AGC

time constants are available for search tuning and normal tuner operation.

The local oscillator signal is fed to the fractional-N divider. The divided frequency is

compared to the comparison frequency into the fast phase detector which drives the

charge pump. The loop ampliﬁer is also on-chip, including the high-voltage transistor to

drive directly the 33 V tuning voltage without the need to add an external transistor.

The comparison frequency is obtained from an on-chip crystal oscillator. The crystal

frequency can be output to the XTOUT pin to drive the clock input of a digital

demodulation IC.

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