TEF6721HL/V1S,557 Datasheet TEF6721HL/V1S,518, TEF6721HL/V1S,557, TEF6721HL/V1T,518 | P1-P3

1. General description

The TEF6721HL is a single chip car radio tuner for AM, FM standard, FM In-Band

On-Channel Digital Audio Broadcast (IBOC DAB) and weather band providing combined

AM and FM gain controlled differential Intermediate Frequency (IF) output for the

SAF7730H including the following functions:

• AM up-conversion tuner to an IF frequency of 10.7 MHz for Long Wave (LW)/Medium

Wave (MW)/Short Wave (SW) (31 m, 41 m and 49 m bands)

• FM single conversion tuner to an IF frequency of 10.7 MHz with integrated image

rejection for US FM, Europe FM, Japan FM, East Europe FM and weather band

reception; all bands can be selected using high side or low side Local Oscillator (LO)

injection

• Tuning system includes Voltage-Controlled Oscillator (VCO), crystal oscillator and

Phase-Locked Loop (PLL) synthesizer on one chip.

2. Features

■ FM mixer for conversion of FM Radio Frequency (RF) (64 MHz to 108 MHz and US

weather band) to an IF of 10.7 MHz; the mixer provides inherent image rejection and

can be switched from low injection to high injection Local Oscillator (LO) via the

C-bus; two different mixer conversion gains can be selected via the I

C-bus

■ Automatic Gain Control (AGC) PIN diode drive circuit for FM RF AGC; AGC detection

at FM mixer input and IF AGC ampliﬁer input; AGC threshold for detection at FM mixer

input is a programmable and keyed function switchable via the I

C-bus; the AGC PIN

diode drive can be activated via the I

C-bus as a local function for search tuning; in

AM mode the AGC PIN diode drive can be activated via the I

C-bus if required

■ Digital alignment circuit for bus controlled matching of oscillator tuning voltage to FM

antenna tank circuit tuning voltage

■ Buffer output for weather band ﬂag

■ Combined AM and FM IF AGC ampliﬁer with high dynamic input range; one of the four

gain settings is selected automatically via two control signals from IF Digital Signal

Processor (DSP); combined differential AM and FM IF output signal to

analog-to-digital converter of IF DSP

■ AM mixer for conversion of AM RF to AM IF 10.7 MHz

■ AM RF PIN diode drive circuit and RF Junction Field Effect Transistor (JFET)

conductance control by AGC cascode drive circuit; AGC threshold detection at AM

mixer and IF AGC input; threshold for detection at AM mixer is programmable via the

C-bus

■ AM and FM RF AGC monitor output intended for gain control of active antennas

TEF6721HL

Car radio tuner front-end for digital IF

Rev. 04 — 20 December 2005 Product data sheet

Product data sheet Rev. 04 — 20 December 2005 2 of 48

Philips Semiconductors

TEF6721HL

Car radio tuner front-end for digital IF

■ Inductor Capacitor (LC) tuner oscillator providing mixer frequencies for FM and AM

mixers

■ Crystal oscillator providing reference frequencies for synthesizer PLL and timing for

Alternative Frequency (AF) updating

■ Optional crystal oscillator frequency pulling possibility via I

C-bus

■ Fast synthesizer PLL tuning system with local control for inaudible AF updating

■ Timing function for AF updating algorithm and control signal output for interfacing with

IF DSP

■ Three hardware programmable I

C-bus addresses; pin BUSENABLE; two software

controlled ﬂag outputs

■ Several test modes for fast Integrated Circuit (IC) tests.

3. Quick reference data

Table 1: Quick reference data

Symbol Parameter Conditions Min Typ Max Unit

DDA(n)

analog supply voltages

1to5

8 8.5 9 V

DDA6

analog supply voltage 6 4.75 5 5.25 V

DDD

digital supply voltage 4.75 5 5.25 V

DDA(n)

sum of analog supply

currents 1 to 5

FM Japan mode 35 44 55 mA

AM mode 28 38 48 mA

DDA6

analog supply current 6

for on-chip power

supply

FM Japan mode 2.2 3.2 4.3 mA

AM mode 10 14 18 mA

DDD

digital supply current FM Japan mode 23 30 39 mA

AM mode 17 23 30 mA

AM(ant)

AM input frequency LW 0.144 - 0.288 MHz

MW 0.522 - 1.710 MHz

SW 5.73 - 9.99 MHz

FM(ant)

FM input frequency 64 - 108 MHz

FM(WB)(ant)

FM weather band input

frequency

162.4 - 162.55 MHz

amb

ambient temperature −40 - +85 °C

AM overall system parameters (based on 15 pF/60 pF dummy aerial; m = 0.3; 2.5 kHz audio

bandwidth in IF DSP; voltages in RMS value at input of dummy aerial); see

Figure 9

i(RF)(IFAGC)

RF input voltage for

start of IF AGC

ﬁrst step - 5.5 - mV

second step - 11 - mV

third step - 22 - mV

i(RF)(RFAGC)

RF input voltage for

start of RF AGC

in-band; m = 0 - 31 - mV

wideband; m = 0

AGC[1:0] = 00 - 92 - mV

AGC[1:0] = 01 - 126 - mV

AGC[1:0] = 10 - 168 - mV

AGC[1:0] = 11 - 210 - mV

Product data sheet Rev. 04 — 20 December 2005 3 of 48

Philips Semiconductors

TEF6721HL

Car radio tuner front-end for digital IF

4. Ordering information

26dB

sensitivity f = 990 kHz - 42 - µV

IP3 3rd-order input

intercept point

∆f

undesired

= 50 kHz - 130 - dBµV

∆f

undesired

= 300 kHz - 135 - dBµV

IP2 2nd-order input

intercept point

- 140 - dBµV

FM overall system parameters (based on 75 Ω dummy aerial; ∆f = 22.5 kHz; de-emphasis is

50 µs in IF DSP; voltages in RMS value at input of dummy aerial); see

Figure 9

i(RF)(IFAGC)

RF input voltage for

start of IF AGC

ﬁrst step - 0.57 - mV

second step - 1.1 - mV

third step - 2.3 - mV

i(RF)(RFAGC)

RF input voltage for

start of wideband AGC

in-band - 4.5 - mV

wideband

AGC[1:0] = 11 - 8 - mV

AGC[1:0] = 10 - 12 - mV

AGC[1:0] = 01 - 17 - mV

AGC[1:0] = 00 - 21 - mV

26dB

sensitivity f = 97 MHz - 1.4 - µV

IP3 3rd-order input

intercept point

∆f

undesired

= 400 kHz - 117 - dBµV

Table 1: Quick reference data

…continued

Symbol Parameter Conditions Min Typ Max Unit

Table 2: Ordering information

Type number Package

Name Description Version

TEF6721HL LQFP64 plastic low proﬁle quad ﬂat package; 64 leads;

body 10 × 10 × 1.4 mm

SOT314-2

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P27 P28-P30 P31-P33 P34-P36 P37-P39 P40-P42 P43-P45 P46-P48

TEF6721HL/V1S,557

Mfr. #:

Buy TEF6721HL/V1S,557

Manufacturer:

NXP Semiconductors

Description:

RF RECEIVER AM/FM/WB 64LQFP

Lifecycle:

New from this manufacturer.

Delivery:

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TEF6721HL/V1S,557

TEF6721HL/V1S,557

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