MAX2112CTI(2007) 查看數據表（PDF） - Maxim Integrated

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MAX2112CTI
(Rev.:2007)

Complete, Direct-Conversion Tuner for DVB-S2 Applications

Maxim Integrated 

Complete, Direct-Conversion

Tuner for DVB-S2 Applications

AC ELECTRICAL CHARACTERISTICS (continued)

(MAX2112 Evaluation Kit: VCC = +3.13V to +3.47V, TA = 0°C to +70°C (MAX2112CTI+), TA = -40°C to +85°C (MAX2112ETI+), default

register settings except ICP = 1 and BBG[3:0]=1011. Typical values measured at VCC = +3.3V, TA = +25°C.) (Note 1)

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

XTAL/REFERENCE OSCILLATOR INPUT AND OUTPUT BUFFER

XTAL Oscillator Frequency Range Parallel-resonance-mode crystal

Input Overdrive level

AC-coupled sine-wave input

XTAL Output-Buffer Divider Range

XTAL Output Voltage Swing

XTAL Output Duty Cycle

4MHz to 30MHz, CLOAD = 10pF

12

30

MHz

0.5

1

2.0

VP-P

1

8

1

1.5

2

VP-P

50

%

Note 1: MAX2112CTI+: Min/max values are production tested at TA = +70°C. Min/max limits at TA = 0°C and TA = +25°C are

guaranteed by design and characterization.

MAX2112ETI+: Min/max values are production tested at TA = +85°C. Min/max limits at TA = -40°C and TA = +25°C are

guaranteed by design and characterization.

Note 2: Input gain range specifications met over this band.

Note 3: In-band IIP3 test conditions: GC1 set to provide the nominal baseband output drive when mixing down a -23dBm tone at

2175MHz to 5MHz baseband (fLO = 2170MHz). Baseband gain is set to its default value (BBG[3:0] = 1011). Two tones at

-26dBm each are applied at 2174MHz and 2175MHz. The IM3 tone at 3MHz is measured at baseband, but is referred to the

RF input.

Note 4: Out-of-band IIP3 test conditions: GC1 set to provide nominal baseband output drive when mixing down a -23dBm tone at

2175MHz to 5MHz baseband (fLO = 2170MHz). Baseband gain is set to its default value (BBG[3:0] = 1011). Two tones at

-20dBm each are applied at 2070MHz and 1975MHz. The IM3 tone at 5MHz is measured at baseband, but is referred to the

RF input.

Note 5: Input IP2 test conditions: GC1 set to provide nominal baseband output drive when mixing down a -23dBm tone at 2175MHz

to 5MHz baseband (fLO = 2170MHz). Baseband gain is set to its default value (BBG[3:0] = 1011). Two tones at -20dBm

each are applied at 925MHz and 1250MHz. The IM2 tone at 5MHz is measured at baseband, but is referred to the RF input.

Note 6: Adjacent channel protection test conditions: GC1 is set to provide the nominal baseband output drive with a 2110MHz

27.5Mbaud signal at -55dBm. GC2 set for mid-scale. The test signal shall be set for PR = 7/8 and SNR of -8.5dB. An adja-

cent channel at ±40MHz is added at -25dBm. DVB-S BER performance of 2E-4 shall be maintained for the desired signal.

GC2 may be adjusted for best performance.

Note 7: Guaranteed by design and characterization at TA = +25°C.

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