RF2667 RF Micro Devices, RF2667 Datasheet
RF2667
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RF2667 Summary of contents
Page 1
... CDMA/FM Cellular Systems • CDMA PCS Systems • GSM/DCS Systems Product Description The RF2667 is an integrated complete IF AGC amplifier and quadrature demodulator developed for the receive section of dual-mode CDMA/FM cellular and PCS appli- cations and for GSM/DCS and TDMA systems ...
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... RF2667 Absolute Maximum Ratings Parameter Supply Voltage Power Down Voltage ( Input RF Power Ambient Operating Temperature Storage Temperature Parameter Overall (Cascaded) Maximum Gain Minimum Gain Gain Variation Input IP3 7 Noise Figure IF Input Frequency Range IF Input Impedance I/Q Frequency Range I/Q Amplitude Balance I/Q Phase Balance ...
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... LO+ Same as pin 12, except complementary input. Rev A14 010622 Interface Schematic CDMA IN+ See pin 4. FM IN+ See pin 8. LO- (balanced is 800 ). The LO input may See pin 12. RF2667 BIAS BIAS 1200 1200 7 CDMA IN- BIAS BIAS 1200 1200 FM IN- BIAS BIAS ...
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... RF2667 Pin Function Description 14 IN SEL Selects between CDMA and FM mode. This is a digitally controlled input. A logic “high” ( VCC-0.7V (<0. OUT- Balanced Baseband Output of Q Mixer. This pin is internally DC biased and should be DC blocked externally. This output is active in both CDMA and FM modes. The output can be used in a single-ended con- figuration by leaving one of the two pins unconnected, however half the output voltage will be lost ...
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... Pin Function Description 24 PD Power Down Control. When logic “high” operating; when logic “low” ( 0.5V), all circuits are turned off. The input impedance of this pin is 10k . Rev A14 010622 RF2667 Interface Schematic -0.3V), all circuits are 7-5 ...
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... RF2667 7 CDMA SAW Filter CDMA IN+ CDMA IN- FM IN+ 7-6 RF2667 Pin-Out VCC1 VCC2 VCC3 OUT- CDMA IN OUT+ CDMA IN GND GND 6 19 FL+ GND 7 18 FL GND FM IN OUT+ BG OUT OUT- DEC SEL LO LO+ ...
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... IN- Q OUT+ 16 C10 OUT Q OUT- 15 C11 DEC IN SEL 14 C12 LO- LO 270 2667400- C13 1 nF RF2667 R13 R15 P2-1 C25 100 nF C21 C22 R12 100 C30 R9 1.6 k 100 nF 820 P3-1 50 strip 3 7 CLC426/ ...
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... RF2667 7 7-8 Evaluation Board Layout 3.025” x 3.025” (Assembly, Top layer, Bottom layer) Rev A14 010622 ...
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... Rev A14 010622 RF2667 7 7-9 ...
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... RF2667 CDMA Cascade Conversion Gain versus Gain Control Gain Control Voltage -20 -40 -60 - CDMA IIP3 versus Gain (V =3.0V, 85 MHz -10 -20 -30 -40 -50 -60 -80 -60 -40 -20 Gain (dB) 7-10 (V =3.0V, 85MHz -10 -20 -30 -40 -50 Temp= 25 deg C Temp= -30 deg C -60 ...