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CDCE937 Scheda tecnica(PDF) 4 Page - Texas Instruments |
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CDCE937 Scheda tecnica(HTML) 4 Page - Texas Instruments |
4 / 30 page CDCE937 CDCEL937 SLAS564F – AUGUST 2007 – REVISED MARCH 2010 www.ti.com PACKAGE THERMAL RESISTANCE for TSSOP (PW) PACKAGE (1) over operating free-air temperature range (unless otherwise noted) AIRFLOW TSSOP20 PARAMETER (lfm) °C/W 0 89 150 75 TJA Thermal Resistance Junction to Ambient 200 74 250 74 500 69 TJC Thermal Resistance Junction to Case — 31 TJB Thermal Resistance Junction to Board — 55 RqJT Thermal Resistance Junction to Top — 0.8 RqJB Thermal Resistance Junction to Bottom — 49 (1) The package thermal impedance is calculated in accordance with JESD 51 and JEDEC2S2P (high-k board). RECOMMENDED OPERATING CONDITIONS MIN NOM MAX UNIT VDD Device supply voltage 1.7 1.8 1.9 V Output Yx supply voltage for CDCE937, Vddout 2.3 3.6 VO Output Yx supply voltage for CDCEL937, Vddout 1.7 1.9 V VIL Low-level input voltage LVCMOS 0.3 VDD V VIH High-level input voltage LVCMOS 0.7 VDD V VI(thresh) Input voltage threshold LVCMOS 0.5 VDD V Input voltage range S0 0 1.9 VIS V Input voltage range S1, S2, SDA, SCL; VI(thresh) = 0.5 VDD 0 3.6 VI(CLK) Input voltage range CLK 0 1.9 V Output current (Vddout = 3.3 V) ±12 IOH /IOL Output current (Vddout = 2.5 V) ±10 mA Output current (Vddout = 1.8 V) ±8 CL Output load LVCMOS 10 pF TA Operating free-air temperature –40 85 °C RECOMMENDED CRYSTAL/VCXO SPECIFICATIONS (1) MIN NOM MAX UNIT fXtal Crystal input frequency range (fundamental mode) 8 27 32 MHz ESR Effective series resistance 100 Ω fPR Pulling range (0 V ≤ Vctrl ≤ 1.8 V)(2) ±120 ±150 ppm Frequency control voltage, Vctrl 0 VDD V C0/C1 Pullability ratio 220 CL On-chip load capacitance at Xin and Xout 0 20 pF (1) For more information about VCXO configuration, and crystal recommendation, see application report (SCAA085). (2) Pulling range depends on crystal-type, on-chip crystal load capacitance and PCB stray capacitance; pulling range of min ±120 ppm applies for crystal listed in the application report (SCAA085). EEPROM SPECIFICATION MIN TYP MAX UNIT EEcyc Programming cycles of EEPROM 1000 cycles EEret Data retention 10 years 4 Submit Documentation Feedback Copyright © 2007–2010, Texas Instruments Incorporated Product Folder Link(s): CDCE937 CDCEL937 |
Codice articolo simile - CDCE937_10 |
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