Digital Set Top Box Tuner

Copyright © 2015 by Silicon Laboratories

2.26.2015

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Si2144

Worldwide Digital Set-Top Box Tuner

Selected Electrical Specifications

Parameter

Test Condition

Typ

Unit

Supply voltage

1.8 and 3.3, or only 3.3

V

Total Power Consumption

External 1.8 V supply, LT disabled

486

mW

RF Input Frequency Range

42 to 870

MHz

NF, cable mode

VHF-L1 (42–106 MHz)

4.8

dB

VHF-L2 (107–247 MHz)

2.8

dB

VHF-H (248–470 MHz)

3.5

dB

UHF (471–870 MHz)

4.8

dB

Input Return Loss*

Cable mode

8

dB

Composite Triple Beat

–56

dBc

Composite Second Order

–68

dBc

LO Phase Noise at 860 MHz

1 kHz | 10 kHz | 100 kHz | 1 MHz

–100 | –100 | –105 | –132

dBc/Hz

LO Integrated Phase Noise at 860 MHz

DSB: 125 Hz to 4 MHz

0.25

(–47)

°rms

(dBc)

LIF Output Center Frequency

Channel BW = 6 MHz | 7 MHz | 8 MHz

4 to 7 | 4.5 to 6.5 | 5 to 6

MHz

LIF Differential Output Voltage

Programmable

0.5 to 2.0

Loop-Through Output (China DVB-C Mode)

RF Frequency Range (LT only)

42 to 870

MHz

LT Output Return Loss (Active)

8

dB

LT Noise Figure (Active)

Max gain

7.1

dB

LT Gain

Active mode

2.9

dB

Zero-power mode

–2.2

dB

*Note: Includes all connector, PCB and front-end circuit losses at the F-connector input of the Si2144 EVB.

Selection Guide

Part #

Description

Si2144

Worldwide digital Set Top Box tuner for ATSC/QAM, DVB-T2/T/C2/C, ISDB-T/C, DTMB

Pin Assignments

1

2

7

8

9

10

11

12

13

20

19

18

GND

PAD

LIF_P

LIF_N

VDDH

GND

VDDL

XOUT

RF_REF

RF_IP

GND

RF_IN

ADDR

GPIO1

17

16

15

14

3

4

5

6

21

22

24

23

3x3 mm QFN-24 Package Information

 

Dimension

Min

Nom

Max

Unit

A

0.80

0.85

0.90

mm

D, E

3.00 BSC

mm

e

0.40 BSC

mm

e1

0.45 BSC

mm

J, K

1.60

1.70

1.80

mm