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PDF TDA7528 Data sheet ( Hoja de datos )
| Número de pieza | TDA7528 | |
| Descripción | FM/AM car-radio receiver front-end | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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TDA7528
FM/AM car-radio receiver front-end for IF-sampling systems
with fully integrated VCO
Features
■ High-performance AM/FM front-end chip for IF-
sampling car-radio tuners
■ Compatible with AM(LW, MW, SW) / FM(EU,
US, JAPAN, OIRT) / Weather Band / HD-Radio
/ DRM applications
■ Ready for multi-tuner applications (phase
diversity, background tuner)
■ Dual input FM-mixer with high image rejection,
specialized for different front-end circuits
■ Integrated AM preamplifier and tank for lower-
cost applications
■ Fully integrated tuning PLL with two VCO's for
diversity systems
■ World tuning capable
■ Integrated IF tank
■ AGC controlled IF amplifier with four inputs for
connection of up to four ceramic filters
■ Fully electronically adjustable
■ I2C/SPI controlled
Description
The TDA7528 is a front-end module for use in car
radio receivers with digital IF processing, using
the STA3004, respectively the STA3005 backend
IC.
LQFP64
Its field of use includes all the current radio
broadcast services in the range of 50kHz to
163MHz for AM radio, FM radio and US weather
band. Digital standards such as DRM and HD
radio can also be handled. A single
supterheterodyne architecture with 10.7 MHz IF-
frequency provides high dynamic range.
The IMR mixer has separate input and output
stages for AM frequency bands up to 30 MHz and
for FM frequencies above 30 MHz.
The integrated AM-preamplifier and the fully
integrated low-pass filter enable low cost
applications. Two FM inputs with different noise /
IP3 parameter, provide full flexibility for the pre-
stage circuitry. Each mixer output is able to drive
two IF-filters, which can be selected by the
different IF-amplifier inputs.
The fast tuning PLL controls two different VCO,
which are designed to operate without frequency
overlap.
Table 1. Device summary
Order code
Package
TDA7528
LQFP64 exposed pad (10x10x1.4 mm)
Packing
Tray
September 2013
Doc ID 13141 Rev 7
1/65
www.st.com
1
1 page  
TDA7528
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
Table 16.
Table 17.
Table 18.
Table 19.
Table 20.
Table 21.
Table 22.
Table 23.
Table 24.
Table 25.
Table 26.
Table 27.
Table 28.
Table 29.
Table 30.
Table 31.
Table 32.
Table 33.
Table 34.
Table 35.
Table 36.
Table 37.
Table 38.
Table 39.
Table 40.
Table 41.
Table 42.
Table 43.
Table 44.
Table 45.
Table 46.
Table 47.
Table 48.
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pin function description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
General parameters electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Voltage sag detection electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Voltage regulator electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
IMR and active balun electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
FM-AGC electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
AM LNA electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Switchable LPF 4th order electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
IMR and active balun electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
AM-AGC electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
IF-Amplifier with anti aliasing filter and ADC buffer electrical characteristics . . . . . . . . . . . 27
IF-AGC electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
IF buffer amplifier electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Phase Locked Loop electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
VCO electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Reference oscillator / reference frequency input buffer electrical characteristics . . . . . . . . 32
Divider electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Phase frequency detector and charge pump electrical characteristics. . . . . . . . . . . . . . . . 33
Temperature sensor electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
D/A-converter electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
A/D-converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
GPIO - general purpose I/O interface pins electrical characteristics . . . . . . . . . . . . . . . . . 36
GPIO test conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Pin configuration of the serial data interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
I2C addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Communication using the SPI protocol electrical characteristics . . . . . . . . . . . . . . . . . . . . 38
Short_reg (0). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
ADCctrl (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
GPIO mode (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
AGC and mixer control (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Supply control (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Divider R MSB (5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
IF AGC control (6). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
FM AGC (7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
AGC voltage threshold (8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Mixer alignment 1 (9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Mixer alignment 2 (10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
PLL control 1 (11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
PLL control 2 (12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
PLL test (13) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Misc 1 (14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Misc 2 (15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
AGC time constant settings (16 / 32) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
AMAGC control (17 / 33) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
GPIO output level control (18 / 34) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
IF control (19 / 35) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Doc ID 13141 Rev 7
5/65
5 Page 
TDA7528
Pin description
Table 2. Pin function description (continued)
Pin #
Pin name
Description
10
FMMIX2dec
FM Mixer decouple
11
GNDRF1
GND RF1 section
12
AMAGC1
AMAGC PIN diode driver output
13
AMMIXdec
AM mixer decouple
14
AMMIXin
AM mixer input
15
AMFdec
Decoupling of AM filter
16
AMFin
Input of AM filter
17
AMLNAout
AM LNA output
18
GP4/UDS
GPIO 4 / UDS input
19 AMAGC2/GP8 AM AGC voltage output / alternative GP8 output
20
AMLNAin
AM LNA input
21
AMLNAGND
AM LNA Ground
22
VCCRF1
Supply RF1 section
23
VCOdec1
BIAS decouple for VCO
24
Vtune
VCO tuning voltage
25
VCOdec2
BIAS decouple for VCO
26
GNDVCO
VCO Ground
27
LFLC
Loop filter low current output
28
LFHC
Loop filter high current output
29
GNDPLL
PLL Ground
30
VDDPLL
Supply PLL
31
GP1
GPIO 1
32
GNDRO
Ground PLL digital part
33
XTALI
Reference oscillator input
34
XTALO
Reference oscillator output
35
VCCRO
Supply PLL digital part
36
BUSGND
BUS interface Ground
37 PS Protocol Select
38
CS/AS
Chip select / Address select
39 CLK SPI / I2C clock
40
MOSI
SPI data input / I2C Data
41
MISO
SPI data output / GP6
42
VCCBUS
Supply of BUS interface
43
VDDdec
Decouple of internal 3.3V (=3,3V + Vbe)
44
BIASD2
Decoupling for biasing
Doc ID 13141 Rev 7
11/65
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TDA7528.PDF ] | |
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