Si2127
Worldwide Analog TV Tuner
Description
The
Si2127
contains
Silicon
Laboratories’
fifth-generation analog TV tuner supporting all
worldwide analog TV standards. By combining
Silicon Labs' proven digital low-IF architecture with a
5th-generation RF front-end, the Si2127 maintains
the highest performance that exceeds that of
MOPLL-based tuners, including industry-leading 2nd
order
distortion
performance.
Pin-
and
API-compatibility to the previous generation minimize
customers' development effort.
The Si2127 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 offers 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 conveys outstanding immunity to
Wi-Fi and LTE interference, replacing the need for
external filtering. Additionally, a software-selectable
cable mode offers optimized return loss.
The Si2127 maintains very high linearity and low
noise to deliver 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 Si2127 provides the highest
tolerance to real-world reception conditions.
Features
-
Worldwide analog TV tuner
-
NTSC, PAL/SECAM
-
Industry-leading margin to EN55020, OpenCable™
-
specifications
Lowest BOM for a silicon analog 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 demod
Standard CMOS process technology
4x4 mm, 28-pin QFN package
RoHS compliant
-
-
-
-
-
-
-
-
-
-
-
Applications
Analog tuner module
TV with on-board analog front-end
Analog portable TV and DVD players
PC-TV accessories
PGA
Q
ADC
ATV
FILTER
DEMOD
OUTPUT
INTERFACE
ANTENNA
INPUT
Si2127
PGA
I
ADC
DSP
DSP
FILTER
AGC
ALIF
ATV
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
Analog TV Tuner
Copyright © 2013 by Silicon Laboratories
1.31.13
Si2127
Worldwide Analog 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
Analog IF Spurious Distortion
ALIF Output Center Frequency
ALIF 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
S=P
channel BW=6 MHz
7 MHz
8 MHz
Programmable
ATV Mode, 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
496
42 to 870
4.0
3.7
3.8
3
9
+5
–6
–100
–100
–105
–132
0.25
(-47)
–72
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)
dB
MHz
Vppd
*Note:
Measured at the F-connector input of the Si2127 EVB and includes all connector, PCB, and front-end circuit
losses.
Selection Guide
Part #
Si2127
Description
Worldwide analog TV tuner for NTSC and PAL/SECAM
Pin Assignments
XOUT
LDO_ADJ
XTAL_O
XTAL_I
VDD_H
VDD_H
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 ALIF_P
B
C
f
e
4X cx c
eee
C A B
GND
PAD
12 ALIF_N
11 NC
SE ATI NG PLANE
DE TAI L "A"
ddd
C A B
10 VDD_H
9 NC
2
GPIO2
3
AGC2
4
SCL
5
SDA
6
VDD_IO
7
GND
8 VDD_D
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
1.31.13
Analog TV Tuner
Copyright © 2013 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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