Si2147
Worldwide Digital TV Tuner
Description
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
th
-generation RF front-end, the Si2147 maintains
5
the highest performance that exceeds that of
MOPLL-based tuners, including industry-leading 2
nd
order
distortion
performance.
Pin-
and
API-compatibility to the previous generation minimize
customers’ development effort.
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 2
nd
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.
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
Features
-
Worldwide digital TV tuner
-
ATSC/QAM, DVB-T2/T/C2/C, ISDB-T/C, DTMB
-
Industry-leading margin to A/74, NorDig, D-Book,
-
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
Si2147
PGA
PGA
Q
ADC
ATV
FILTER
DEMOD
OUTPUT
INTERFACE
I
ADC
DSP
DSP
FILTER
AGC
DLIF
DTV
DEMOD
CONTROL
INTERFACE
RF
AGC
3.3 V
1.8 V
LDO
0 / 90
IF
AGC
LOW-IF
RSTB
SDA
SCL
ADDR
AV
SoC
FREQ
SYNTH
XOSC
XTAL_O
XTAL_I
XOUT
GPIO
Digital TV Tuner
Copyright © 2012 by Silicon Laboratories
12.21.12
Si2147
Worldwide Digital TV Tuner
Selected Electrical Specifications
Parameter
Supply voltage
Total Power Consumption
RF Input Frequency Range
NF, terrestrial*
VHF-L
VHF-H
UHF
Return Loss*
Wideband IIP3*
Inband IIP3*
LO Phase Noise at 860 MHz
LO Integrated Phase Noise at 860 MHz
DLIF Output Center Frequency
DLIF Differential Output Voltage
Terrestrial mode
Cable mode
VHF-H, N
18,
36
VHF-H, N
1,
2
1 kHz
10 kHz
100 kHz
1 MHz
DSB: 125 Hz to 4 MHz
channel BW=6 MHz
7 MHz
8 MHz
Programmable
XOUT Disabled
(V
DD_H
=3.3 V, V
DD_L
=1.8 V, V
DD_D
=1.8 V, T
A
=25
C)
Test Condition
Typ
1.8 and 3.3, or only 3.3
484
42 to 870
4.0
3.7
3.8
3
9
+5
–6
–100
–100
–105
–132
0.25
(-47)
4 to 7
4.5 to 6.5
5 to 6
0.5 to 2.0
Unit
V
mW
MHz
dB
dB
dB
dB
dB
dBm
dBm
dBc/Hz
rms
(dBc)
MHz
Vppd
*Note:
Measured at the F-connector input of the Si2147 EVB and includes all connector, PCB, and front-end circuit
losses.
Selection Guide
Part #
Si2147
Description
Worldwide digital TV tuner for ATSC/QAM, DVB-T2/T/C2/C, ISDB-T/C, DTMB
Pin Assignments
LDO_ADJ
XTAL_O
XTAL_I
VDD_H
VDD_H
XOUT
4x4 mm QFN-28 Package Information
A
PIN#1 I .D.
(LA SER M ARK)
GND
Pi n # 1 ID
RF_REF 22
RF_IP 23
RF_IN 24
RF_SHLD 25
ADDR 26
RSTB 27
AGC1 28
1
GPIO1
21
20
19
18
17
16
15
14 VDD_L
13 DLIF1_P
B
C
f
e
4X cx c
eee
C A B
GND
PAD
12 DLIF1_N
11 DLIF2_P
10 VDD_H
9 DLIF2_N
SE ATI NG PLANE
DE TAI L "A"
ddd
C A B
Symbol
A
D, E
e
f
Min
0.80
Nom
0.85
4.00 BSC
0.50 BSC
3.50 BSC
Max
0.90
Unit
mm
mm
mm
mm
12.21.12
2
GPIO2
3
AGC2
4
SCL
5
SDA
6
VDD_IO
7
GND
8 VDD_D
Digital TV Tuner
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
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