DLPS168C May 2021 – November 2022 DLPC6540
PRODUCTION DATA
PARAMETER | CRYSTAL A | CRYSTAL B | UNIT |
---|---|---|---|
Crystal circuit configuration | Parallel resonant | Parallel resonant | |
Crystal type | Fundamental (first harmonic) | Fundamental (first harmonic) | |
Crystal nominal frequency | 40 | 38 | MHz |
Crystal frequency tolerance (1) | ±100 (200 p-p max) | ±100 (200 p-p max) | PPM |
Crystal equivalent series resistance (ESR) | 60 (Max) | 60 (Max) | Ω |
Crystal load capacitance | 20 (Max) | 20 (Max) | pF |
Crystal Shunt Load capacitance | 7 (Max) | 7 (Max) | pF |
Temperature range | –40°C to +85°C | –40°C to +85°C | °C |
Drive level | 100 (Nominal) | 100 (Nominal) | µW |
RFB feedback resistor (nominal) | 1 Meg (Nominal) | 1 Meg (Nominal) | Ω |
CL1 external crystal load capacitor | See equation in (2). | See equation in (2). | pF |
CL2 external crystal load capacitor | See equation in (3). | See equation in (3). | pF |
PCB layout | A ground isolation ring around the crystal is recommended. | A ground isolation ring around the crystal is recommended. |
PARAMETER | MIN | NOM | MAX | UNITS | |
---|---|---|---|---|---|
Cstray_pll_refclkA_i | Sum of package and PCB stray capacitance at REFCLKA_I | 4.5 | pF | ||
Cstray_pll_refclkA_o | Sum of package and PCB stray capacitance at REFCLKA_O | 4.5 | pF | ||
Cstray_pll_refclkB_i | Sum of package and PCB stray capacitance at REFCLKB_I | 4.5 | pF | ||
Cstray_pll_refclkB_o | Sum of package and PCB stray capacitance at REFCLKB_O | 4.5 | pF |
The crystal circuits in the DLPC6540 have dedicated power (VAD33_OSCA and VAD33_OSCB) pins, with the recommended filtering for each shown in Figure 9-11, and recommended values shown in Table 9-1.
MANUFACTURER | PART NUMBER | NOMINAL FREQUENCY | FREQUENCY
TOLERANCE, FREQUENCY STABILITY, AGING/YEAR |
ESR | LOAD CAPACITANCE | OPERATING TEMPERATURE | DRIVE LEVEL |
---|---|---|---|---|---|---|---|
TXC | 7M38070001 (1) | 38 MHz | Freq Tolerance: ±20 ppm |
30-Ω max | 12 pF | –40°C to +85°C | 100 µW |
Freq Stability: ±20 ppm |
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Aging/Year: ±3 ppm | |||||||
TXC | 7M40070041 (2) | 40 MHz | Freq Tolerance: ±20 ppm |
30-Ω max | 12 pF | –40°C to +85°C | 100 µW |
Freq Stability: ±20 ppm |
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Aging/Year: ±3 ppm |