STMICROELECTRONICS STV4100B

STV4100
Ultra-compact low-power 3.3-V terrestrial tuner IC
Data Brief
Features
Description
!
RF-to-baseband direct conversion
(IQ interface only)
!
Single 3.3-V DC supply
The STV4100 terrestrial tuner is a directconversion (zero-IF) receiver with quadrature
outputs intended for digital TV broadcasting.
!
Input frequency range 174 to 230 MHz and
470 to 870 MHz
!
Fully integrated VCO
!
Harmonic rejection mixer stage
!
Fully integrated RF AGC with RF power
monitoring
!
Programmable channel filter covers 6 to 8 MHz
channel spacing
!
Low external component count
!
Low power consumption (625 mW typical)
!
Temperature range -10° C to 70° C
!
Crystal frequency output to drive the
demodulator IC
!
Compatible with 5-V and 3.3-V I2C bus
!
Fully Nordig Unified (versions 1.0.2, 1.0.3, 2.0)
compliant
!
DTG (D-Book) compliant
!
Digitenne compliant
!
VFQFPN-32 5x5x1 mm3, exposed pad down
!
ECOPACK, environmentally-friendly package,
RoHS (2002/95/EC) compliant.
On each VHF and UHF input is a low noise
amplifier with both switchable and variable gain to
ensure an optimal signal level for the two mixers.
Each mixer, which down-converts the signal to
baseband, is followed by a low-pass filter and
amplifier. The baseband gain is programmable via
a dedicated pin.
The LO signals are provided by an integrated PLL
which contains an on-chip voltage controlled
oscillator meeting stringent phase noise
requirements. The LO frequencies are
programmable.
The comparison frequency for the
phase/frequency detector is generated by dividing
the crystal oscillator reference frequency. The
crystal frequency can be from 16 MHz to 31 MHz
depending on application.
Typical applications
!
Terrestrial set-top box
!
iDTV
!
PCTV
BBAGC
RFAGC
VHF_IN
BBIP
BBIN
UHF_IN
BBQP
BBQN
PLL, dividers
XTI, XTO
FREF
March 2009
DC offset compensation
I2C Bus Interface
Amplifier
Rev 1
For further information contact your local STMicroelectronics sales office.
SCL
SDA
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Applications
1
STV4100
Applications
The STV4100 DVB-T tuner is designed to match optimally to industry-leading
STMicroelectronics demodulator ICs such as the STV0362.
Figure 1.
Applications diagram for DVB-T system
STV4100
DVB-T tuner
SDA, SCL
BBAGC
STV0362
I2 C
SDA,SCL
SDAT,SCLT
AGC_IF
VHFN/P
BBIN,BBIP
Diplexer
IM,IP
UHFN/P
BBQN,BBQP
QM,QP
FREF
XTAL_I
RFAGCO
16 to 31 MHz
RF_LEVEL
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D[7:0],
CLKOUT,
STROUT,
D/PN,
ERROR
AUX_CLK
I2 C
Decoder
STV4100
Applications
Applications diagram without loop-through
STV4100
Figure 2.
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Applications
Applications diagram with loop-through (simplified)
STV4100
Figure 3.
STV4100
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STV4100
2
Ordering information
Ordering information
Table 1.
Ordering information
Order code
Temperature range
Package
Packaging
STV4100B
-10 to 70° C
VFQFPN-32
exposed pad down
Tray
STV4100BT
-10 to 70° C
VFQFPN-32
exposed pad down
Tape and reel
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Revision history
3
STV4100
Revision history
Table 2.
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Document revision history
Date
Revision
18-Mar-2009
1
Changes
Initial release.
STV4100
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