Worldwide TV Tuner

Copyright © 2011 by Silicon Laboratories

9.20.11

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.

Si2156

Worldwide High-Performance TV Tuner IC for Analog and Digital Standards

Selected Electrical Specifications

Parameter

Test Condition

Typ

Unit

Supply Voltage

1.8 and 3.3

V

Total Power Consumption

VHF bands | UHF bands

0.98 | 0.87

W

RF Input Frequency Range

42 to 1002

MHz

Noise Figure*

max gain

4.0

dB

Wideband IIP3*

N±18,±36; max RF gain

+18

dBm

Inband IIP3*

N±1,±2; max RF gain

–7

dBm

LO Phase Noise at 860 MHz

125 Hz | 250 Hz | 1 kHz | 10 kHz | 100 kHz –83 | –91 | –96 | –95 | –104 dBc/Hz

LO Integrated Phase Noise



at 860 MHz

DSB: 125 Hz to 4 MHz

0.4

(–43)

deg. rms

(dBc)

Adjacent Channel Attenuation

N±1; RF input* to DLIF output

80

dB

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 Swing

programmable

0.5 to 2.0

ALIF Output Center Frequency

channel BW = 6 MHz | 7 MHz | 8 MHz

4 to 7 | 4.5 to 6.5 | 5 to 6

MHz

Analog IF Spurious Distortion

S = P – 6 dB

–78

dBc

ALIF Differential Output Voltage Swing

programmable

0.5 to 2.0

*Note: Measured at the F-connector input of the Si2156 reference design and includes all connector, PCB, and front-end

circuit losses.

Pin Assignments

GND_PAD

17

27

28

29

30

18

19

31

32

20

XOUT

VDD_L

16

15

21

22

23

24

BCLK

RSTB

6

7

8

5

DLIF_P

DLIF_N

ALIF_P

13

14

12

11

9

10

1

2

3

4

25

26

GND

VDD_IO

ALIF_N

VDD_H

GPIO1

INTB/GPIO2

GND

GND

GND

5 x 5 mm QFN-32 Package

Symbol

Min

Nom

Max

Unit

A

0.80

0.85

0.90

mm

D, E

5.00 BSC

mm

e

0.50 BSC

mm

Selection Guide

Part #

Description

Si2156

Worldwide high performance TV tuner IC for analog and digital standards:



NTSC, PAL/SECAM, ATSC/QAM, DVB-T/T2/C, ISDB-T/C, DTMB