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TEF6700HL

Features: ` FM mixer for conversion of FM RF (64 to 108 MHz andUS weather band) to IF of 10.7 MHz; the mixer providesinherent image rejection and can be switched from 'low'injection to 'high' injection Local Oscillator (LO) via theI2C-bus; two different mixer conversion gains can beselected via th...

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SeekIC No. : 004517445 Detail

TEF6700HL: Features: ` FM mixer for conversion of FM RF (64 to 108 MHz andUS weather band) to IF of 10.7 MHz; the mixer providesinherent image rejection and can be switched from 'low'injection to 'high' inject...

TEF6700HL Data Sheet

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Part Number:
TEF6700HL
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/21

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Product Details

Description



Features:

` FM mixer for conversion of FM RF (64 to 108 MHz and
US weather band) to 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
I2C-bus; two different mixer conversion gains can be
selected via the I2C-bus
` AGC PIN diode drive circuit for FM RF AGC; AGC detection at FM mixer input; the AGC PIN diode drive can be activated via the I2C-bus as a local function for search tuning; AGC threshold is a programmable and keyed function switchable via the I2C-bus
` Digital alignment circuit for bus controlled matching of oscillator tuning voltage to FM antenna tank circuit tuning voltage
` Buffer output for weather band flag
` FM IF linear amplifier with high dynamic input range; amplifier gain can be switched to two different positions via the I2C-bus
` FM IF AGC with multiplexed inputs for FM and In-Band On-Channel Digital Audio Broadcast (IBOC DAB)
` Buffer amplifier for FM IBOC DAB IF bypassing second IF filter can be activated via I2C-bus
` AM mixer 1 for conversion of AM RF to AM IF1 10.7 MHz
` AM RF PIN diode drive circuit and RF JFET conductance control by AGC cascode drive circuit; AGC threshold detection at AM mixer 1 and IF2 AGC input; threshold is programmable via the I2C-bus
` AM noise blanker with blanking at AM IF2; AM noise blanker can be deactivated via the I2C-bus
` AM mixer 2 for conversion of AM IF1 to AM IF2 450 kHz
` AM IF2 AGC
` Multiplexer to output AM IF2 AGC and FM IF AGC to a car IF DSP IC (e.g. SAA7724H)
` AM/FM RF AGC monitor output
` Level detector for AM and FM with temperature compensated output voltage; starting point and slope of level output is programmable via the I2C-bus
` IF counter for AM IF2 and FM IF
` LC tuner oscillator providing mixer frequencies for FM mixer and AM mixer 1
` Crystal oscillator providing mixer frequencies for AM mixer 2 and reference for synthesizer PLL, IF count and timing for Radio Data System (RDS) update
` Fast synthesizer PLL tuning system with local control for inaudible RDS updating
` Timing function for RDS update algorithm and control signal output for a car IF DSP IC (e.g. SAA7724H)
` Three hardware programmable I2C-bus addresses; pin BUSENABLE; two software controlled flag outputs
` Several test modes for fast IC and system tests.


Pinout

Connection Diagram


Specifications

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
VDDA1
VDDA2
VDDA3
VDDA4
VDDA5
VDDA6
VDDD
Tstg
Tamb
Ves
 analog supply voltage 1 for FM IF amplifier
analog supply voltage 2 for FM and AM RF
analog supply voltage 3 for tuning PLL
analog supply voltage 4 for VCO
analog supply voltage 5 for on-chip power supply
analog supply voltage 6 for on-chip power supply
digital supply voltage
storage temperature
ambient temperature
electrostatic handling voltage

 note 1
note 1
note 1
note 1

note 1



note 2
note 3
-0.3
-0.3
-0.3
-0.3
-0.3
-0.3
-0.3
-55
-40
-200
-2000
+10
+10
+10
+10
+6.5
+10
+6.5
+150
+85
+200
+2000
V
V
V
V
V
V
V
°C
°C
V
V

Notes
1. To avoid damages and wrong operation it is necessary to keep all 8.5 V supply voltages at a higher level than any 5 V supply voltage. This is also necessary during power-on and power-down sequences. Precautions have to be provided in such a way that interferences can not pull down the 8.5 V supply below the 5 V supply.
2. Machine model (R = 0 , C = 200 pF).
3. Human body model (R = 1.5 kW, C = 100 pF).




Description

The TEF6700HL is a single chip car radio tuner for AM, FM standard, FM IBOC DAB and weather band providing gain controlled output of FM IF and AM IF2 for a car IF DSP IC (e.g. SAA7724H) including the following functions:
· AM double conversion tuner for LW/MW/SW (31 m, 41 m and 49 m bands) with IF1 = 10.7 MHz and IF2 = 450 kHz
· 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 VCO, crystal oscillator and PLL synthesizer on one chip.




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