Datasheet LTC6902 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | Multiphase Oscillator with Spread Spectrum Frequency Modulation |
| 页数 / 页 | 16 / 4 — ELECTRICAL CHARACTERISTICS. Note 1:. Note 7:. Note 2:. Note 8:. Note 3:. … |
| 文件格式/大小 | PDF / 213 Kb |
| 文件语言 | 英语 |
ELECTRICAL CHARACTERISTICS. Note 1:. Note 7:. Note 2:. Note 8:. Note 3:. Note 9:. Note 4:. Note 10:. Note 5:. Note 6:
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LTC6902
ELECTRICAL CHARACTERISTICS Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 7:
Output rise and fall times are measured between the 10% and the of the device may be impaired. 90% power supply levels with no output loading. These specifications are
Note 2:
Frequencies near 100kHz and 1MHz may be generated using two based on characterization. different values of RSET (see Applications Information). For these
Note 8:
fMAX is defined as the highest frequency excursion and is equal to frequencies, the error is specified under the following assumption: the fOUT frequency set by the RSET resistor. fMIN is the lowest frequency 20k < RSET ≤ 400k for 5kHz ≤ fOUT ≤ 10MHz. excursion.
Note 3:
Frequency accuracy is defined as the deviation from the fOUT
Note 9:
The LTC6902CMS and LTC6902IMS are guaranteed functional equation. over the operating temperature range of –40°C to 85°C.
Note 4:
Jitter is the ratio of the peak-to-peak distribution of the period to
Note 10:
The LTC6902CMS is guaranteed to meet 0°C to 70°C specifica- the mean of the period. This specification is based on characterization and tions and are designed, characterized and expected to meet the specified is not 100% tested. performance from –40°C to 85°C but is not tested or QA sampled at these
Note 5:
Guaranteed by 5V test. temperatures. The LTC6902IMS is guaranteed to meet specified perfor-
Note 6:
To conform with the Logic IC Standard convention, current out of mance from –40°C to 85°C. a pin is arbitrarily given as a negative value.
W U TYPICAL PERFOR A CE CHARACTERISTICS Frequency Variation Over Peak-to-Peak Jitter vs Output Frequency Variation vs RSET Temperature Frequency (M = 1, 2-Phase Mode)
4 1.00 1.0 TA = 25°C RSET = 63.4k 3 0.9 GUARANTEED LIMITS APPLY OVER 0.75 ÷1 OR ÷10 OR ÷100 20kΩ ≤ RSET ≤ 400kΩ 0.8 2 0.50 ÷1, VA = 5V 0.7 TYPICAL HIGH TYPICAL ) 1 0.25 HIGH P-P 0.6 ÷1, VA = 3V 0 0 0.5 TYPICAL 0.4 VARIATION (%) –1 TYPICAL LOW VARIATION (%) –0.25 JITTER (% LOW 0.3 –2 –0.50 ÷10 0.2 –3 –0.75 ÷100 0.1 –4 –1.00 0 1k 10k 100k 1M –40 –20 0 20 40 60 80 1k 10k 100k 1M 10M RSET (Ω) TEMPERATURE (°C) OUTPUT FREQUENCY (Hz) 6902 G01 6902 G02 6902 G03
Supply Current vs Output Frequency [SSFM Disabled, Output Resistance 2-Phase Mode (M = 1)] vs Supply Voltage
3.5 140 TA = 25°C 3.0 ) 120 Ω 2.5 OUTPUT SOURCING CURRENT ÷1, 5V 100 2.0 ÷10, 5V 1.5 80 ÷100, 5V 1.0 SUPPLY CURRENT (mA) OUTPUT RESISTANCE ( 60 0.5 ÷1, 3V OUTPUT SINKING CURRENT ÷100, 3V ÷10, 3V 0 40 1k 10k 100k 1M 10M 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 OUTPUT FREQUENCY (Hz) SUPPLY VOLTAGE (V) 6902 G04 6902 G05 6902f 4
ELECTRICAL CHARACTERISTICS Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 7:
Output rise and fall times are measured between the 10% and the of the device may be impaired. 90% power supply levels with no output loading. These specifications are
Note 2:
Frequencies near 100kHz and 1MHz may be generated using two based on characterization. different values of RSET (see Applications Information). For these
Note 8:
fMAX is defined as the highest frequency excursion and is equal to frequencies, the error is specified under the following assumption: the fOUT frequency set by the RSET resistor. fMIN is the lowest frequency 20k < RSET ≤ 400k for 5kHz ≤ fOUT ≤ 10MHz. excursion.
Note 3:
Frequency accuracy is defined as the deviation from the fOUT
Note 9:
The LTC6902CMS and LTC6902IMS are guaranteed functional equation. over the operating temperature range of –40°C to 85°C.
Note 4:
Jitter is the ratio of the peak-to-peak distribution of the period to
Note 10:
The LTC6902CMS is guaranteed to meet 0°C to 70°C specifica- the mean of the period. This specification is based on characterization and tions and are designed, characterized and expected to meet the specified is not 100% tested. performance from –40°C to 85°C but is not tested or QA sampled at these
Note 5:
Guaranteed by 5V test. temperatures. The LTC6902IMS is guaranteed to meet specified perfor-
Note 6:
To conform with the Logic IC Standard convention, current out of mance from –40°C to 85°C. a pin is arbitrarily given as a negative value.
W U TYPICAL PERFOR A CE CHARACTERISTICS Frequency Variation Over Peak-to-Peak Jitter vs Output Frequency Variation vs RSET Temperature Frequency (M = 1, 2-Phase Mode)
4 1.00 1.0 TA = 25°C RSET = 63.4k 3 0.9 GUARANTEED LIMITS APPLY OVER 0.75 ÷1 OR ÷10 OR ÷100 20kΩ ≤ RSET ≤ 400kΩ 0.8 2 0.50 ÷1, VA = 5V 0.7 TYPICAL HIGH TYPICAL ) 1 0.25 HIGH P-P 0.6 ÷1, VA = 3V 0 0 0.5 TYPICAL 0.4 VARIATION (%) –1 TYPICAL LOW VARIATION (%) –0.25 JITTER (% LOW 0.3 –2 –0.50 ÷10 0.2 –3 –0.75 ÷100 0.1 –4 –1.00 0 1k 10k 100k 1M –40 –20 0 20 40 60 80 1k 10k 100k 1M 10M RSET (Ω) TEMPERATURE (°C) OUTPUT FREQUENCY (Hz) 6902 G01 6902 G02 6902 G03
Supply Current vs Output Frequency [SSFM Disabled, Output Resistance 2-Phase Mode (M = 1)] vs Supply Voltage
3.5 140 TA = 25°C 3.0 ) 120 Ω 2.5 OUTPUT SOURCING CURRENT ÷1, 5V 100 2.0 ÷10, 5V 1.5 80 ÷100, 5V 1.0 SUPPLY CURRENT (mA) OUTPUT RESISTANCE ( 60 0.5 ÷1, 3V OUTPUT SINKING CURRENT ÷100, 3V ÷10, 3V 0 40 1k 10k 100k 1M 10M 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 OUTPUT FREQUENCY (Hz) SUPPLY VOLTAGE (V) 6902 G04 6902 G05 6902f 4