SN761631 Datasheet, PDF (1/26 Pages) Texas Instruments – RF FRONT END FOR AM/FM IF SAMPLING RADIO

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FEATURES
SN761631
RF FRONT END FOR AM/FM IF SAMPLING RADIO
SLES182 – OCTOBER 2006
• Radio Frequency (RF) Automatic Gain
Control (AGC) With Detection of RF and
Intermediate Frequency (IF) Signal
• Image Rejection Mixer
• IF-Programmable Gain Control
• Two IF Programmable Gain Amplifiers (PGA)
With Separate Gain Control for Analog/
In Band On Channel (IBOC) Signal Reception
• Programmable IF Tank Center-Frequency
Adjustment
• FM Electrical Alignments for
RF Preselection Stage
• Fast PLL for RDS System
• Electrical Frequency Adjustments for
Crystal (Xtal) Oscillator
• Crystal Oscillator Buffered Output for
Diversity Operation
64-PIN HTQFP (PAP)
(TOP VIEW)
IF_REF3
IF_IN30
IF_REF2
IF_IN180
GND_IFPGA
IFBUF_OUT_1
IFBUF_OUT_0
VCC8.5_IF
IF_IN1
IF_VREF1
AMNB_TC
MIX_OUTN
MIX_OUTP
VCC8.5_RF
AMMIX_INN
AMMIX_INP
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
1
48
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47
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46
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45
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44
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43
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42
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40
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39
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38
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33
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
XTAL_BUF_OUTN
AF_SAMPLE
AF_HOLD
BUS_ENABLE
SCL
SDA
GND_VCO
VCC8.5_VCO
VCO_COLL
VCO_BASE
VCC5.0_PLL_
GND_PLL
VCC8.5_PLL
CP1_OUT
CP2_OUT
VTUNE
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PRODUCT PREVIEW information concerns products in the
formative or design phase of development. Characteristic data and
other specifications are design goals. Texas Instruments reserves
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Copyright © 2006, Texas Instruments Incorporated