LTC4402-1EMS8 Linear Technology, LTC4402-1EMS8 Datasheet
LTC4402-1EMS8
Specifications of LTC4402-1EMS8
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LTC4402-1EMS8 Summary of contents
Page 1
... RF power amplifiers operating in the 300MHz to 2.4GHz range. The LTC4402-2 has two outputs to control dual T PA modules with two control inputs. An internal sample and hold circuit enables the LTC4402 used with AM modulation via the carrier or PA supply. The input voltage range is optimized for operation from a single lithium-ion cell or 3 NiMH ...
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... Storage Temperature Range ................ – 150 C IN 2.6V Maximum Junction Temperature ........................ 125 C IN Lead Temperature (Soldering, 10 sec)................ 300 C + 0.3V ORDER PART NUMBER PCA LTC4402-1EMS8 V 3 PCB GND 4 GND 5 MS8 PART MARKING 10-LEAD PLASTIC MSOP T LTXF JMAX The denotes specifications which apply over the full operating = 3.6V, SHDN = V A ...
Page 3
... RF INPUT POWER (dBm) 4402 G02 V (Pin 3): (LTC4402-2 Only) Power Control Voltage should PCB IN Output. This pin drives an external RF power amplifier power control pin. The maximum load capacitance is 100pF. The output is capable of rail-to-rail swings at low load currents. Selected when BSEL is high. ...
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... V (Pin 7/8): Asserted high prior to AM modulation, HOLD opens control loop and holds voltage at V EDGE modulation. BSEL (Pin 9): (LTC4402-2 Only) Selects V and V PCB resistor to ground. RF (Pin 8/10): Coupled RF Feedback Voltage . This input is referenced to V 2400MHz. This pin has an internal 250 termination, an internal Schottky diode detector and peak detector capacitor ...
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... PCB PCA an 850MHz/900MHz channel and V channel. BSEL must be established before the part is enabled. The LTC4402-1 can be used to drive a single RF channel or dual channel with integral multiplexer. Control Amplifier The control amplifier supplies the power control voltage to the RF power amplifier. A portion (typically – 19dB for low frequencies and – ...
Page 6
... RF output signal is produced. The LTC4402-X V outputs must quickly rise to this threshold voltage in order to meet the power/time profile. To reduce this time, the LTC4402-X starts at 450mV. However, at very low power levels the PCTL input signal is small, and the V outputs may take several microseconds to reach the RF power amplifier threshold voltage ...
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... SHDN 11 s MINIMUM, ALLOWS TIME FOR AUTOZERO TO SETTLE Figure 1. LTC4402 Ramp Timing Demo Board The LTC4402-X demo board is available upon request. The demo board has a 900MHz and an 1800MHz RF channel and V controlled by the LTC4402-X. Timing signals HOLD for SHDN are generated on the board using a 13MHz crystal oscillator reference ...
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... VPCA loop configuration accounts for the nonlinear detector gain that is dependent on RF input voltage and frequency. The LTC4402-X unity gain bandwidth specified in the data sheet assumes that the net voltage gain contributed by the RF power amplifier and coupler network is unity. The bandwidth is calculated by measuring the rise time be- tween 10% and 90% of the voltage change at V for a small step in voltage applied to PCTL ...
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... In no event will Linear Technology be liable for special, collat- eral, incidental or consequential damages in connection with or arising out of the use of this model. It should be remembered that models are a simplification of the actual circuit. LTC4402-1/LTC4402-2 4402f 9 ...
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... PCTL **Open loop connections, comment-out EFB, VIN and VPCTL****** VPCTL PCTL VRF ******Add AC statement and print statement as required*** .AC DEC 50 10 1E7 *****for PSPICE only***** .OP .PROBE ************************* .END Figure 6. LTC4402-X Low Frequency AC SPICE Model ND3 ND4 GX1 GX2 RX1 + + 1E6 GM GM ND5 – ...
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... TYP 0.53 0.152 (.021 .006) 1.10 (.043) DETAIL “A” MAX SEATING PLANE 0.17 – 0.27 (.007 – .011) 0.50 TYP (.0197) BSC LTC4402-1/LTC4402 POWER MODULE 33pF Li-Ion LTC4402-1 WITH MUX OUT1 900MHz PCA HOLD HOLD 3 6 PWR GND ...
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