View MT2122_4128364.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

RF SILICON AND SUBSYSTEMS SOLUTIONS FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS
MT2122 SINGLE-CHIP BROADBAND TUNER
PRODUCT BRIEF
The MT2122 is a fully integrated broadband tuner for analog and digital OpenCable set-top boxes, home gateways, cable modems and HDTV applications.
MT2122 Single-Chip Broadband Tuner
The MicroTunerTM MT2122 is a fully integrated single-chip tuner, with functional blocks specifically designed to ease implementation of high-performance analog and digital OpenCableTM set-top boxes. It supports advanced analog/digital set-top boxes (STB) including OpenCableTM, home gateways, cable modems and HDTV applications. The MT2122 has been developed to give manufacturers design flexibility at low cost without compromising high performance. The MT2122 receives signal from 48 - 1100 MHz. It features integrated filter components and controls that allow for a simple, alignment-free pre-select filter. This provides excellent end-to-end linearity performance in severely sloped input conditions. MT2122 greatly reduces complexity for the Multimedia over Coax Alliance (MoCATM) applications. Its dual-conversion architecture ensures consistent OpenCable compliant performance with no manual alignment. The on-chip buffer amplifier for Forward Data Channel (FDC) reduces bill of materials (BOM) cost while improving performance compared to solutions using a directional coupler. The MT2122 includes a PIN diode attenuator linearizer circuit that can drive a PI-network pin diode attenuator in the signal path. The MT2122 also supports multi-tuner front-end implementations and is programmable through a serial bus interface.
APPLICATIONS
* Advanced analog and digital set-top boxes (STB) including OpenCable. Home gateways Cable modems HDTV
* * *
FEATURES
* Output fully compatible with demodulators for MoCA, NTSC, PAL, SECAM, DAVIC, DVB-C, DOCSIS(R), EuroDOCSISTM, OpenCable and other standards On-chip amplifier for Forward Data Channel (FDC) Ease of multi-tuner front-end implementations Dual-conversion architecture for consistent OpenCable compliant performance Serial control interface One general purpose output controllable via serial control interface On-chip frequency synthesis system integrating PLL, VCOs and varactors. 1.1 GHz bandwidth No need for the 28 V to 33 V supplies typically required by traditional cable tuners Automatic frequency control (AFC) voltage detector for frequency fine-tuning Integrated temperature sensor for thermally sensitive systems 3.3 V and 5 V serial bus compatible No tunable parts required Simple interface to external filters Software shutdown mode Small 8 mm x 8 mm 56-pin QFN package
* * *
* *
*
* *
*
* * * * * *
MT2122 SINGLE-CHIP BROADBAND TUNER
PRODUCT BRIEF
MIX2VCCrf
MIX1OUTp
MIX1OUTn
RECOMMENDED OPERATING CONDITIONS
UPCVCC UPCVCC HBshn LBshn HBinn LBinn GND
PARAMETER
Input frequency range First intermediate center frequency Second intermediate frequency (programmable) Supply voltage 5 V Supply voltage 3.3 V Supply voltage ripple Operating junction temperature VGA differential output load impedance Serial control clock MIX2 differential load impedance
MIN
48
TYP
MAX
1100
UNIT
MHz MHz
HBinp HBshp LBshp LBinp 1 2 3 4 5 6 7 8 9 10 11 12 13 14
56
55
54
53
52
51
50
49
48
47
46
45
44
43
AGCCTRL
MIX2INp
MIX2INn
GND
42 41 40 39 38 37
PINSh PINSe MIX2OUTp MIX2OUTn IFVCC LO2tcm LO2reg VCCLO2 LO2LPF GND AFCin VGAINp VGAINn VGACTRL
1690 30 4.75 3.15 5.0 3.3 60 5.25 3.45 15 125 300 400 800
MHz V V mV C kHz
FDCin FDCVcc FDCout LO1tcm1 LO1tcm2 LO1reg VCCLO1 LO1LPF GPO A0
Exposed die attach paddle on package bottom
36 35 34 33 32 31 30 29
15
16
17
18
19
20
21
22
23
24
25
26
27 VGAVCC
A1
DVCCLO1
SerCLK
SROVCC
VGAOUTp
ABSOLUTE RATINGS
PARAMETER
Supply voltage, +5 V Supply voltage, +3.3 V Junction temperature Storage temperature Lead-free solder temperature for 5 seconds Relative humidity Input voltage -0.3 -50
MT2122 Pin Diagram MIN MAX
6 3.6 125 150 260 95 VCC +0.3
UNIT
V V C C C % V
MIX2 Output
1st IF Saw
2nd IF Saw
Input Balun MHz In PIN Diode Atten Selectable Preslector Filter LNA MIX1 MIX2 VGA VGA Output
RF Gain Control
Pin Diode Controller PLL
LO1
LO2
IF Gain Control
FDC
PLL
Die Temp Sensor
3-bit AD
AFC In/Temp Out
Charge Pump FDC OOB Tuner
Charge Pump
Serial Bus
Clock Data
GPO
Loop Filter
Buffered Reference Output
Loop Filter
MT2122 Block Diagram
Microtune, Inc., 2201 Tenth Street, Plano, TX 75074, USA Tel: +1-972-673-1600, Fax: +1-972-673-1602, E-mail: sales@microtune.com, Web site: www.microtune.com For a detailed list of design centers, sales offices, and sales representatives, visit our Web site at www.microtune.com
The information in this document is believed to be accurate and reliable. Microtune assumes no responsibility for any consequences arising from the use of this information, nor from any infringement of patents or the rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or other rights of Microtune. The information in this publication replaces and supersedes all information previously supplied, and is subject to change without notice. The customer is responsible for assuring that proper design and operating safeguards are observed to minimize inherent and procedural hazards. Microtune assumes no responsibility for applications assistance or customer product design. The devices described in this document are not authorized for use in medical, life-support equipment, or any other application involving a potential risk of severe property or environmental damage, personal injury, or death without prior express written approval of Microtune. Any such use is understood to be entirely at the user's risk. Microtune is a registered trademark of Microtune, Inc. MicroTuner, MicroStreamer, VideoCaster, DataCaster, and the Microtune logo are trademarks of Microtune, Inc. All other trademarks belong to their respective companies. Microtune's products are protected by one or more of the following U.S. patents: 5,625,325; 5,648,744; 5,717,730; 5,737,035; 5,739,730; 5,805,988; 5,847,612; 6,100,761; 6,104,242; 6,163,684; 6,169,569; 6,172,378; 6,177,964; 6,211,745; 6,218,899; 6,268,778; 6,310,387; 6,323,736; 6,355,537; 6,429,502; 6,462,327; 6,535,068; 6,580,313; 6,608,522; 6,631,257; 6,714,776; 6,725,463; 6,744,308; 6,771,124; 6,784,945; 6,804,099; 6,888,406; 6,891,435; 6,906,594; 6,909,886; 6,920,182; 6,922,556; 6,963,478; 6,973,288; 6,993,310; 7,035,614; D469,742 and additional patents pending or filed.
Entire contents Copyright (c) 1996 - 2006 Microtune, Inc.
VGAOUTn
DVCCLO2
SROOUT
VGAVCC
XTALn
SerData
SerVCC
XTALp
28
060206
MT2122 PB-00121 -- Rev 1.0
June 2006

▲Up To Search▲

Price & Availability of MT2122

	To Download MT2122 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .