Si2147
Worldwide Digital TV Tuner
Description
Features
A universal digital TV tuner, the Si2147 supports
digital reception for all worldwide terrestrial and cable
TV standards. By combining Silicon Laboratories’
proven digital
low-IF
architecture with
a
5th-generation RF front-end, the Si2147 maintains
the highest performance that exceeds that of
MOPLL-based tuners, including industry-leading 2 nd
order
distortion
performance.
Pinand
API-compatibility to the previous generation minimize
customers’ development effort.
- Worldwide digital TV tuner
- ATSC/QAM, DVB-T2/T/C2/C, ISDB-T/C, DTMB
- Industry-leading margin to A/74, NorDig, D-Book,
The Si2147 delivers unprecedented integration with
no external balun, tracking filters, LNAs, SAW filters,
or inductive power supply filtering. While other
solutions may also eliminate the balun, they suffer
degradation in NF and 2nd order distortion
compromising reception. Silicon Laboratories’
proprietary and field-proven architecture delivers not
only an optimized BOM but also world-class system
performance. Options for single or dual supply and
internal power-on reset are included. A harmonic
rejection mixer delivers outstanding immunity to
Wi-Fi and LTE interference, replacing the need for
external filtering.
For advanced digital terrestrial TV reception, DVB-T2
and DVB-C2 constellations demand outstanding
phase noise specifications, and the Si2147 rises to
the challenge, delivering industry-leading integrated
phase noise. Additionally, a software-selectable
cable mode offers optimized return loss.
C-Book, ARIB, EN55020, OpenCable™ specifications
- Lowest BOM for a silicon digital TV tuner
- No balun
- No SAW filters or wire-wound inductors
- Integrated LNAs and complete tracking filters
- Best-in-class real-world reception
- Exceeds discrete MOPLL-based tuners
- Industry-leading phase noise performance
- High immunity to Wi-Fi and LTE interference
- Low power consumption
- 3.3 V and 1.8 V power supplies
- Single-supply option for 3.3 V-only operation
- Integrated power-on reset circuit
- Low-IF output to SoC or demodulator
- Standard CMOS process technology
- 4x4 mm, 28-pin QFN package
- RoHS compliant
Applications
-
Digital ½-NIM tuner module
iDTV (Integrated Digital TV)
Digital terrestrial and cable STB
Digital PVR, DVD and Blu-Ray disc recorder
PC-TV accessories
The Si2147 delivers exceptional picture quality and a
higher number of received stations when compared
to other solutions. Incorporating worldwide field
experience from four prior tuner generations in mass
production, the Si2147 delivers the highest tolerance
to real-world reception conditions.
ANTENNA
INPUT
Si2147
RF
AGC
0 / 90
PGA
I
ADC
DSP
DSP
FILTER
PGA
Q
ADC
ATV
FILTER
DEMOD
IF
AGC
LOW-IF
3.3 V
1.8 V
Digital TV Tuner
LDO
FREQ
SYNTH
XOSC
Copyright © 2012 by Silicon Laboratories
AGC
DLIF
RSTB
DTV
DEMOD
AV
SoC
SDA
SCL
ADDR
12.21.12
Si2147
Worldwide Digital TV Tuner
Selected Electrical Specifications
(VDD_H=3.3 V, VDD_L=1.8 V, VDD_D=1.8 V, TA=25 C)
Parameter
Test Condition
Total Power Consumption
XOUT Disabled
Typ
Supply voltage
Unit
1.8 and 3.3, or only 3.3
V
484
mW
42 to 870
MHz
VHF-L
4.0
dB
VHF-H
3.7
dB
UHF
3.8
dB
Terrestrial mode
3
dB
Cable mode
9
dB
VHF-H, N 18, 36
+5
dBm
VHF-H, N 1, 2
–6
dBm
1 kHz 10 kHz 100 kHz 1 MHz
–100 –100 –105 –132
dBc/Hz
DSB: 125 Hz to 4 MHz
0.25
(-47)
rms
(dBc)
DLIF Output Center Frequency
channel BW=6 MHz 7 MHz 8 MHz
4 to 7 4.5 to 6.5 5 to 6
MHz
DLIF Differential Output Voltage
Programmable
0.5 to 2.0
Vppd
RF Input Frequency Range
NF, terrestrial*
Return Loss*
Wideband IIP3*
Inband IIP3*
LO Phase Noise at 860 MHz
LO Integrated Phase Noise at 860 MHz
*Note: Measured at the F-connector input of the Si2147 EVB and includes all connector, PCB, and front-end circuit
losses.
Selection Guide
Part #
Description
Si2147
Worldwide digital TV tuner for ATSC/QAM, DVB-T2/T/C2/C, ISDB-T/C, DTMB
Pin Assignments
4x4 mm QFN-28 Package Information
A
PIN# 1 I .D .
(LA SER M ARK)
Pi n #1 ID
RF_REF 22
21
20
19
18
17
16
15
RF_IP 23
14 VDD_L
RF_IN 24
13 DLIF1_P
f
e
B
4X cx c
eee
C A B
C
RF_SHLD 25
12 DLIF1_N
GND
PAD
ADDR 26
10 VDD_H
AGC1 28
9 DLIF2_N
2
Digital TV Tuner
3
4
5
DE TAIL "A"
11 DLIF2_P
RSTB 27
1
SE ATING PLANE
6
7
8 VDD_D
ddd
C A B
Symbol
Min
Nom
Max
Unit
A
0.80
0.85
0.90
mm
D, E
4.00 BSC
mm
e
0.50 BSC
mm
f
3.50 BSC
mm
Copyright © 2012 by Silicon Laboratories
Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc.
Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders
12.21.12
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