MC44S803Rev 2.0, 09/2008
Freescale Semiconductor Technical Data
© Freescale Semiconductor, Inc., 2006 - 2008. All rights rerved.
This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
Low Power CMOS Broadband Tuner
Freescale Semiconductor’s MC44S803 is a 3.3 Volt, low power, high performance, single-chip CMOS, broadband tuner. This chip offers a
cost-effective, low-power solution for high-performance analog and digital TV market. This highly integrated third generation silicon tuner covers a 48 MHz to 1 GHz RF input and converts to a 30 MHz to 60 MHz IF frequency. The 861 MHz to 1 GHz frequency range is supported with reduced performance.
The single-chip broadband tuner us a double-conversion architecture, which eliminates tracking filters and their manually aligned coils. Two IF outputs are provided to support systems with multiple demodulators (e.g. one digital demodulator and one analog TV demodulator).
The MC44S803 is designed to meet all Data Over Cable Service Interface Specification (DOCSIS), ATSC specifications for 8VSB, 64- and 256-Quadrature Amplitude Modulation (QAM) as well as the NorDig Unified 1.0.3 specifications for Coded Orthogonal Frequency Division Multiplexing (COFDM) for DVB-T.The device is available in a Pb-free 64-pin quad leadless package (QFN).Features •Low power consumption (746 mW typical)•Single 3.3 V supply operation
•Programmable power down mode with fast start-up
•Variable-gain Low-Noi Amplifier (LNA) with 40 dB gain control range •Ability to switch between two external analog control voltages for LNA •Two fully integrated frequency synthesizers
•Fully integrated tuned circuit Voltage Controlled Oscillators (VCOs)•Fully integrated VCO varactors (requires only one external inductor)•Second IF variable gain amplifier
•Flexible reference oscillator circuit (4.0 MHz to 28 MHz crystal)•Reference oscillator buffer to drive additional tuners or modulators •Choice of I 2C or SPI interface control bus •Internal lf-diagnostic circuits
•Typical CTB of -63 dBc, CSO of -63 dBc and XMod of -55 dBc •Typical noi figure of 7.0 dB
•
Pha noi -89 dBc/Hz, typical @ 10 kHz offt
Figure 1. MC44S803 Functional Block Diagram
MC44S803
LOW POWER CMOS BROADBAND TUNER
ORDERING INFORMATION
Device Temp.Range Package RoHS MC44S803EP
0°C to +85°C
64 QFN
yes
BPF
XTAL
1st IF OSC
Amp
Amp幼儿园班级计划
BPF
2nd IF Amp Digital IF AGC Control
Analog RF In AGC AGC SPI / I 2C Control I/O
Regulator
3.3 V
Mixer
Mixer
Dual Synth VCO
VCO
MC44S803OVERVIEW
Typical applications for the MC44S803 include cable data modems, cable TV (CATV) t-top boxes (analog & digital), computer TV tuner cards (analog & digital), analog TV ts,
digital terrestrial TV ts, digital terrestrial adapters, home DVD-R and DVR/PVR.
Figure 2. Generation 3 CMOS Silicon Tuner IC Block Diagram
Figure 2 shows the major ctions of the MC44S803. The input frequency range is 48 MHz to 1 GHz. RF signal
reception from 861 MHz to 1 GHz is supported with reduced performance. The RF input signal enters the Low Noi Amplifier (LNA) after passing though the external diplex filter. The signal is then up converted to 1086 MHz (1086 MHz is an example frequency, not a limitation or recommendation) and pasd through the first IF filter. This first IF SAW can be replaced with a lower cost filter (determined by application). The filtered signal is then routed back onto the chip where it is down converted to the cond IF center frequency. This is fed to the cond IF channel filter. The signal enters the IC again to go through the cond IF variable gain output amplifier that gets an analog AGC control voltage from the demodulator.
The output can be switched between two output ports. This provides support for systems with multiple demodulators (e.g. one digital demodulator and one analog TV demodulator).
Many of the amplifiers in the IC have programmable gain to balance the gain budget for a given application. Amplifier gains are typically t as part of the initialization quence at power up, then d
o not need to be changed after that. All programming and configuration control is accomplished via an industry standard I 2C or SPI interface bus. Additional features of the MC44S803 include:• 3.3 V ±5% single supply operation •Internal 1.8 V tracking regulator •High linearity and reduced current
•Reduced gain roll off at high frequencies
•40 dB gain control range in LNA, digitally or analog voltage controlled.
•36 dB gain control range in IF, analog voltage controlled.
•Ability to switch between two control voltages for u with digital and analog demodulators
•Fully integrated VCO varactors (only one VCO inductor required)
•Reference crystal frequency range from 4.0 to 28 MHz
BPF
External RF Input Loop Filter
RF AGC0RF AGC1
LNA
Pre Amplifier 1
Mixer 1
Pre Amplifier 2
Mixer 2
LPF
Post Amplifier 2
BPF
30 – 60 MHz 2nd IF
T o Digital Demodulator
Charge Pump 1
VCO VCO VCO
Pha Detector
Divide by N1
Input Power Detector Shut Dn
Gain Select
Amplifier
Oscillator
Buffer
LPF
Divide by R3
Divide by R1Data Registers
花篮怎么做4 to 28 MHz
Digital AGC
SPI / I 2C Bus Interface
Quadrature Generator
Divide by N2
Pha Detector
Charge Pump 2
AGC Control
IF Amp
Divide by R2
External Loop Filter
T o Analog Demodulator
2
1 1.8 V Regulator
3.3 V
250/125/62.5 kHz
1077 to 2150 MHz 1086 MHz Nominal 1st IF
48 – 1000 MHz
Freescale MC44S803Silicon Tuner IC
OSC
平凡的英雄作文VCO 1042 MHz Nominal
SS/Addr 1MISO/Addr 2
MOSI/SDA
BusSelect SCLK
Diff抗美援朝作文
IF AGC Amp 19
20
51
5021
61586222591316
15
141753
544445
31
24
23
25
33
34
2
3
26
41422829
PIN DESCRIPTION Table1 lists the pin out of the MC44S803. In addition to the
64 leads, there is a grounding pad on the bottom of the
package, which is soldered to the PCB.
Table1. Pin Descriptions (Listed by Pin Number)
Pin Number Signal Name Description
1VCO1RegByp Bypass for VCO 1 Reg.,No
Connect (Recommended)
2 V DD 3.
3 Volt, VCO1 power supply,
(Bypass caps should return to pin
64, V SS RBias)
3VCO1Cap Bypass Cap for VCO 1 (Return
cap to pin 64, V SS RBias) 4VCO1LCRtn Return for VCO 1c Inductor
5VCO1LC Inductor for VCO 1c
6VCO1LBRtn Return for VCO 1b Inductor
7VCO1LB Inductor for VCO 1b
8VCO1LARtn Return for VCO 1a Inductor
9VCO1LA Inductor for VCO 1a
10TestP Test Pin Plus
11TestM Test Pin Minus
12V DD 3.3 Volt, SPI power supply
13SClk Serial Clock
14MISO_Adr2MISO / Address bit 2. (Internal
pull-up for “1”; Ground for “0”) 15BusSel SPI/I2C Bus Select. (Internal pull-
up for “1”; Ground for “0”) 16SDA_MOSI SDA / MOSI
重赏之下必有勇夫17SS_Adr1Slave Select / Address bit 1.
(Internal pull-up for “1”; Ground
for “0”)
18V DD 3.3 Volt, OSC power supply
19Xtal2Crystal Input 2
20Xtal1Crystal Input 1
21RefOutP Ref. Osc. Buffer In/Output Plus
22RefOutM Ref. Osc. Buffer In/Output Minus 23DigIFOM Digital IF Out Minus
24DigIFOP Digital IF Out Plus
25AnIFOP Analog IF Out Plus
26AnIFOM Analog IF Out Minus
27V DD 3.3 Volt, IF AGC power supply
太棒了英文28IFAGCInM IF AGC Amplifier Input Minus
(Internally cap coupled) 29IFAGCInP IF AGC Amplifier Input Plus
(Internally cap coupled) 30AnTest Analog Test Pin
312ndIFAGC Second IF AGC Control.
32V DD 3.3 Volt, Synth 2 power supply
33LF2Loop Filter 2
34LF2Rtn V SS RefVCO2. Return for Loop
Filter 2
35VCO2RegByp Bypass for VCO 2 Reg., No
Connect (Recommended) 36V DD 3.3 Volt, V DD VCO2 power supply.
(Bypass cap should return to pin
34 V SS RefVCO2)
37VCO2Cap Bypass Cap for VCO 2. (Return
cap to pin 34 V SS RefVCO2) 38VCO2L1Inductor for VCO 2
39VCO2L2Return for VCO 2 Inductor
40V DD 3.3 Volt, IF AMP power supply
41IFAmpOP IF Amplifier Output Plus
42IFAmpOM IF Amplifier Output Minus
43V SS V SS IF AMP
44PreMix2InM Mixer 2 Preamp Input Minus
45PreMix2InP Mixer 2 Preamp Input Plus
46V DD 3.3 Volt, M2IF power supply
47NC No Internal Connection
48NC No Internal Connection
49V DD 3.3 Volt, Synth 1 power supply
50LF1First LO Loop Filter
51LF1Rtn V SS Ref VCO1. Return for Loop
Filter 1
52V DD 3.3 Volt, Mixer 1 power supply
53Mix1OP First Mixer Output Plus
54Mix1OM First Mixer Output Minus
55LNABias LNA Bias
56V DD 3.3 Volt, LNA power supply
57LNAInPL Inductor for RF In Plus
58LNAInP RF Input Plus
59LNAInM RF Input Minus
60LNAInML Inductor for RF In Minus
61FEAGC_A FE AGC Control A
62FEAGC_B FE AGC Control B
63RBias Bias Setting Resistor
64RBiasRtn Return for RBias
65Gnd_Pad Ground pad on bottom of
package
Table1. Pin Descriptions (Listed by Pin Number)
Pin Number Signal Name Description
MC44S803
ELECTRICAL SPECIFICATIONS
Table6 specifies the tuner performance with low power ttings for the reference design shown in Figure30, which includes the applicable filtering. Note that this tuner can be operated in an extended frequency band of 861 MHz to 1000MHz. In this extended band, Gain Variation and Noi Figure specs increa 1.0 dB.
TEST CONDITIONS:•V DD = 3.3 V
•T A = 25°C
•Second IF = 44 MHz
•RF Frequency Range = 57 to 861 MHz
Table2. Absolute Maximum Ratings
Absolute maximum continuous ratings are tho maximum values beyond which damage to the device may occur. Exposure to the conditions or conditions beyond tho indicated may adverly affect device reliability. Functional operation at absolute maximum rated conditions is not implied.
Characteristic Symbol Min Max Units Supply Voltage V DD-0.3+3.6V
Any Input Voltage V in-0.3V DD + 0.3V Storage Temperature Range T stg-65+150°C Table3. General Specifications
Characteristic Symbol Min Units ESD Protection (Machine Model)MM200V
ESD Protection (Human Body Model)(1) 1.MIL STD 883C method 3015-7.HBM2000V
Latch-Up Immunity LU200mA
Table4. Recommended Operating Conditions
Characteristic Symbol Min Typ Max Units Supply Voltage V DD+3.135+3.3+3.465V Ambient Temperature T A0—+85°C Table5. Typical DC Power Consumption
Power Mode Supply (V)Power (mW)CTB (dBc)CSO (dBc)XMOD (dBc) Low (–3 dBmV Attack) 3.3746-59-58-55 High (0 dBmV Attack) 3.31040-63-63-55
Parameter Atten
Pre
Amp1
Mix1
Pst
Amp2
IF Amp
Gain0 dB Nom—8.3 dB 6.0 dB
Power—Low Low Low Low
MC44S803
Table7 specifies the tuner performance with high power ttings for the reference design shown in Figure30, which includes the applicable filtering. Note that this tuner can be operated in an extended frequency band of 861 MHz to 1000MHz. In this extended band, Gain Variation and Noi Figure specs increa 1.0 dB.
TEST CONDITIONS:•V DD = 3.3 V
•T A = 25°C
•Second IF = 44 MHz
•RF Frequency Range = 57 to 861 MHz
Supply Current — Low power mode—211—mA Supply Current — All blocks shutdown—1214mA No
i Figure Channel 57 MHz— 6.88.0dB Noi Figure Channel 861 MHz—7.58.5dB Noi Figure Channel 1000 MHz—8.29.3dB Conversion Gain — All max ttings 57 MHz889195dB
861 MHz848791dB
1000 MHz838690dB Conversion Gain — All min ttings 57 MHz808487dB
861 MHz768083dB
1000 MHz757982dB Gain Variation — Variation in Gain for one tuner over 57MHz-861MHz— 4.2—dB IF Gain Flatness — within any channel——±0.5dB RF AGC Range —40—dB IF AGC Range 0.5 V to 3.3 V—36—dB
Spurious at Input Terminals: 5 to 42 MHz
54 to 861 MHz —
—
—
—
-59
-55
dBmV
dBmV
Spurious at Output Terminals—-65—dBc 2nd IF Image Rejection (Tuner board us an external lst IF SAW for
image rejection)
64——dB Distortions with -3 dBmV AGC Attack Point (99 Channels)————
Beats within the output—-57-49dBc
Cross-Modulation Ratio—-55-47dBc
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Composite Second Order (CSO)—-58-54dBc
Composite Triple Beat (CTB)—-59-54dBc Pha Noi @ 1 kHz—-92—dBc/Hz Pha Noi @ 10 kHz—-89—dBc/Hz Pha Noi @ 100 kHz—-100—dBc/Hz Pha Noi @ 1 MHz—-128—dBc/Hz
Parameter Atten
Pre
Amp1
Mix1
Pst
伟泰教育
Amp2
IF Amp
Gain0 dB Nom—8.3 dB 6.0 dB
Power—Nom High Nom Nom
MC44S803
Supply Current — Nominal power mode—315—mA Supply Current — All blocks shutdown—1214mA Noi Figure Channel 57 MHz— 6.67.5dB Noi Figure Channel 861 MHz—8.29.0dB Noi Figure Channel 1000 MHz—9.010.0dB Conversion Gain — All max ttings 57 MHz889195dB
861 MHz848791dB
1000 MHz838690dB Conversion Gain — All min ttings 57 MHz808487dB
861 MHz768083dB
1000 MHz757982dB Gain Variation — Variation in Gain for one tuner over 57MHz--861MHz— 4.2—dB IF Gain Flatness — within any channel——±0.5dB RF AGC Range —40—dB IF AGC Range 0.5 V to 3.3 V—36—dB Spurious at Input Terminals:———
5 to 42 MHz——-59dBmV
54 to 861 MHz——-55dBmV Spurious at Output Terminals—-60—dBc 2nd IF Image Rejection64——dB Distortions with 0 dBmV AGC Attack Point————
Beats within the output—-59-52dBc
Cross-Modulation Ratio—-56-52dBc
Composite Second Order (CSO)—-66-54dBc
Composite Triple Beat (CTB)—-63-57dBc Distortions with -3 dBmV AGC Attack Point————
Beats within the output—-60-52dBc
Cross-Modulation Ratio—-61-57dBc
Composite Second Order (CSO)—-66-58dBc
Composite Triple Beat (CTB)—-66-62dBc Pha Noi @ 1 kHz—-92—dBc/Hz Pha Noi @ 10 kHz—-89—dBc/Hz Pha Noi @ 100 kHz—-100—dBc/Hz Pha Noi @ 1 MHz—-128—dBc/Hz
MC44S803
