MAX3580(2006) 데이터 시트보기 (PDF) - Maxim Integrated
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MAX3580 Datasheet PDF : 21 Pages
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Direct-Conversion TV Tuner
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX3580 EV kit, VCC = +3.1V to +3.5V, GND = 0V. RF_AGC = BB_AGC = +2.85V, RF input terminated into a 75Ω load, BBI_ and
BBQ_ loaded by RL greater than 2kΩ and CL less than 10pF, VCO active, registers are set according to the recommended default
register conditions, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +3.3V, TA = +25°C, unless otherwise
noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
At 5.25MHz (UHF mode)
23
At 4.75MHz (VHF mode)
23
Rejection Ratio
At 13.25MHz (UHF mode)
63
dB
At 11.75MHz (VHF mode)
62
At > 16.2MHz
84
DC Output Voltage
Output DC Offset
Baseband Highpass Cutoff
VCM
Common mode (Note 11)
BB_AGC = 2.85V
Programmable
0.485 x VCC
VDC
-70
+70
mV
20 to 200
Hz
AGC Gain Slope
BB_AGC = 0.5V to 2.85V
14
35
dB/V
Ratio of Passband to Stopband
Noise
BB_AGC = 2.85V, 10kHz to 3.8MHz vs.
16.2MHz to 23.8MHz
15
dB
MIXER OVERLOAD DETECTOR (RSSI)
Attack-Point Accuracy
5.25MHz test tone
±1
dB
Attack-Point Increment
Detector Output Sink
Detector Gain
3-bit DAC
Detector on, VOUT = 0.5V
Detector off, VOUT = 2.85V
1.5
dB
0.3
mA
5
µA
30
V/V
Detector Response Time
< 200
µs
2-WIRE INTERFACE
Clock Rate
400
kHz
Note 1: Min and Max limits are guaranteed by test above TA = +25°C and are guaranteed by design and characterization at
TA = -40°C. The default register settings are not production tested. Load registers no sooner than 100µs after power-up.
Note 2: The specified overall voltage gain is suitable to amplify -93dBm to -20dBm to 1VP-P at the baseband output.
Note 3: Guaranteed by design characterization over the specified operating conditions. Not production tested.
Note 4: BB_AGC adjusted for gain = 72dB with RF_AGC at 2.85V.
Note 5: Two tones at a) 230MHz and 431MHz with IM measured at 201MHz and b) 230MHz and 701MHz with IM measured at
471MHz.
Note 6: Two tones at 499MHz and 689MHz with IM measured at 879MHz.
Note 7: IM3 measured with two tones within the adjacent channel. Production tested at 72dB of gain with two tones at a)
205.75MHz and 210.5MHz with IM measured at 201MHz and b) 475.25MHz and 479.5MHz with IM measured at
471MHz. Production tested at 49dB of gain with two tones at 475.25MHz and 479.5MHz with IM measured at 471MHz.
Note 8: Measured at RF = 171MHz with harmonics at 511MHz (3rd harmonic) and 851MHz (5th harmonic).
Note 9: Delay of 2ns equal 2.74° phase error.
Note 10: UHF rolloff of 4dB in addition to gain flatness specification.
Note 11: Production tested at VCC = +3.5V to limits of 1.7V ±0.1V.
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