U3770M ATMEL Corporation, U3770M Datasheet
U3770M
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U3770M Summary of contents
Page 1
... CT2 I/Q Modulator and Clock Circuitry Description The U3770M is a quadrature modulator realized using TEMIC Semiconductors’ advanced 0.8 micron CMOS process. The IC is especially designed for CT2 applica- tions in conjunction with TEMIC Semiconductors’ RF/IF signal processor U2760B and a CT2 baseband controller TM (i.e., AMD PhoX controller Am79C4xx) ...
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... U3770M Functional Description The U3770M has been designed to reduce power con- sumption and cost of CT2 devices. An innovative CMOS I/Q modulator with extremely low current provides all the advantages of I/Q modulation: – No requirement for FM deviation tuning – Eliminates the Gaussian filter – Simplifies the power ramping control The modulated output carrier can be programmed ...
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... V Iin, Qin Z Iin, Qin F Iin, Qin V IB, QB Pin 9 V Mod out LO sub SB sub Z Mod out Pin 14 F CLK out V CLK out U3770M Value Unit 6 –0 –0 °C –40 to +85 °C –65 to +150 °C T < T +10 j amb Value Unit 3 " 10% ° ...
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... U3770M Test Circuit R 12.8 MHz Ref Amp VDD 4 DGND 13 AGND 12 PROG 10 TST (5) 4 Phase DIV / 25 comparator 512 kHz DIV / 36 512 kHz DIV / 2 6.4 MHz or Dual DFF 3.2 MHz DIV / Figure 3 ...
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... Data sheets can also be retrieved from the Internet: TEMIC Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 (0)7131 67 2594, Fax number: 49 (0)7131 67 2423 Rev.A2, 07-Jul-00 such unintended or unauthorized use. http://www.temic–semi.com U3770M 5 (5) ...