U3770M ATMEL | Alldatasheet
Document overview
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Technical content
Features
/C0068Programmable 0.8/1.6-MHz quadrature-modulated carrier generation /C0068More than 26 dB LO and sideband suppression /C006818.432 MHz CMOS level clock generation /C0068Supply-voltage range 2.7 V to 3.3 V /C0068Low power consumption, typically 12 mW /C0068SO16 package or die form Block Diagram Phase comparator DIV / 36 VCO 512 kHz
3.2 MHz
512 kHz 18.432 MHz 95 9881RRef in 12.8 MHz VDD DGND AGND Qin QBin Iin IBin DNC 1, 15, 16
6.4 MHz
Amp. LF
14 CLK out
9 MOD out
Figure 1. Block diagram
Ordering Information
Extended Type Number Package Remarks U3770M-MFP SO16 Tube U3770M-MFPG3 SO16 Taped and reeled
0.8 MHz or 1.6 MHz by the PROG control pin. The typical supply voltage is 3 V @ 4 mA. is needed in the complete CT2 device. control voltage (LF pin) controls the VCO frequency. Figure 2. Pinning
3 VDD Supply voltage
4 DGND Digital ground
5 QBin Analog switch input
6 Qin Analog switch input
7 IBin Analog switch input
8 Iin Analog switch input
9 MODout Modulator output signal
10 TST Test input, must be connected to
11 LF PLL loop filter
13 AGND Analog ground
14 CLKout Digital CMOS clock output
18.432 MHz
Rev. A3, 07-Sep-00 3 (6) Absolute Maximum Ratings Stresses at or above those listed may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in this data sheet is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Parameters Symbol Value Unit Supply voltage VDD 6 V Modulator input voltages I, IB, Q, QB –0.5 to VDD V Reference frequency input FRef in –0.5 to VDD V Ambient temperature Tamb –40 to +85 °C Storage temperature Tstg –65 to +150 °C Junction temperature Tj Tj < Tamb +10 °C Operating Range Parameters Symbol Value Unit Supply voltage VDD 3 /C0034 10% V Ambient temperature Tamb –5 to +70 °C Junction temperature Tj Tj < Tamb +5 °C Storage temperature Tstg –40 to +125 °C
Electrical Characteristics
Test conditions (unless otherwise specified) related to test circuit VS = 3 V , VBIi, VBIi and VBQi, VBQi = 1 VPP single ended, oscillator frequency FRef in = 12.8 MHz, Tamb = –5 to +70°C Parameters Test Conditions / Pins Symbol Min. Typ. Max. Unit Supply-voltage range Pin 3 VDD 2.7 3 3.3 V Supply current Pin 3 IDD 4 mA FRef in Pin 2 Input voltage VF Ref in 150 mVPP Input impedance ZF Ref in 100 k/C0087 I, Q inputs Pins 5, 6, 7 and 8 Input voltage Single ended VIin, Qin 1 VPP Input impedance Single ended ZIin, Qin 20 k/C0087 Input frequency FIin, Qin 18 kHz External bias voltage VIB, QB 1.5 V MODout Pin 9 Output level 1) Unloaded VMod out 70 mVRMS LO and sideband suppres- sion LO sub SB sub –26 dBc Output impedance ZMod out 5 k/C0087 CLKout Pin 14 Output frequency FCLK out 18.432 MHz Output-voltage swing @ load = 20 pF VCLK out 1.8 V
Rev. A3, 07-Sep-004 (6) Note 1) The output signal contains some harmonics to be filtered by an external lowpass filter
12.8 MHz
Figure 3. Test circuit
Rev. A3, 07-Sep-006 (6)
Package Information
We reserve the right to make changes to improve technical design and may do so without further notice . Parameters can vary in different applications. All operating parameters must be validated for each customer application by the customer. Should the buyer use TEMIC Semiconductors products for any unintended or unauthorized application, the buyer shall indemnify TEMIC Semiconductors against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. Data sheets can also be retrieved from the Internet: http://www.temic–semi.com TEMIC Semiconductor GmbH, P .O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 (0)7131 67 2594, Fax number: 49 (0)7131 67 2423