LTC4400-1ES6#TR Linear Technology, LTC4400-1ES6#TR Datasheet
LTC4400-1ES6#TR
Specifications of LTC4400-1ES6#TR
LTC44001ES6TR
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LTC4400-1ES6#TR Summary of contents
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... The shutdown feature disables the part and reduces the supply current to < dual control channel version (LTC4400-2) is also available in an 8-pin MSOP package. , LTC and LT are registered trademarks of Linear Technology Corporation. ...
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... SHDN = HI, unless otherwise noted 0mA VPCA (Note 400 (Note 8) PCTL < 80mV LOAD PCTL > 160mV = 100pF, LOAD ORDER PART NUMBER TOP VIEW BSEL LTC4400-2EMS8 6 SHDN 5 PCTL MS8 PART MARKING = 250 C/W JA LTXB MIN TYP MAX 2 1.2 1.9 0 0.05 V – 0.25 CC 2.7 2 ...
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... Note 6: Guaranteed by design. This parameter is not production tested. Note 7: Includes maximum DAC offset voltage and maximum control voltage. is Note 8: Bandwidth is calculated using the 10% to 90% rise time: PCA 0.35/rise time Note 9: Measured 12 s after SHDN = HI. LTC4400-1 Detector Characteristics at 1800MHz 10000 –30 C 1000 100 ...
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... RF (Pins 1/8): RF Feedback Voltage. This input is referenced The frequency range is 300MHz to 2700MHz for the CC LTC4400-1 and 300MHz to 2000MHz for the LTC4400-2. This pin has an internal 250 termination, an internal Schottky diode detector and peak detector capacitor. GND (Pins 2/4): System Ground. PCTL (Pins 3/5): Analog Input. The external power control DAC drives this input ...
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... DIRECTIONAL COUPLERS” Li-Ion AUTOZERO GAIN COMPRESSION + 80mV – 270kHz FILTER + 38k RF DET – V 22k REF 51k 33.4k TXENB 10 s DELAY 150k 4 3 SHDN PCTL LTC4400-1/LTC4400-2 50 TXENB – – CLAMP + C BUFFER C – 30k 30k + – 100 CONTROL LTC4400 PCA 4400-1 BD sn4400 4400fas 5 ...
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... TXENB AUTOZERO – – 80mV – 270kHz FILTER 38k V + 22k REF 51k – 33.4k 6k TXENB CONTROL 150k 5 7 PCTL BSEL 1.8GHz/1.9GHz BUF A CLAMP + MUX1 MUX2 C C – 30k 30k 12 BUF B 100 12 V PCA 100 LTC4400 PCA 3 V PCB 4400-2 BD sn4400 4400fas ...
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... RF Schottky diode peak detector and amplifier to convert the RF feedback signal to DC PCA/B compression and a bandgap reference. Band Selection The LTC4400-2 is designed to drive two separate power control lines. The BSEL pin will select V V when high. BSEL must be established prior to SHDN PCB being asserted high ...
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... V START PCTL T1: LTC4400-X COMES OUT OF SHUTDOWN 12 s PRIOR TO BURST T2: INTERNAL TIMER COMPLETES AUTOZERO CORRECTION, <10 s T3: BASEBAND CONTROLLER STARTS RF POWER RAMP AFTER SHDN IS ASSERTED HIGH T4: BASEBAND CONTROLLER COMPLETES RAMP UP T5: BASEBAND CONTROLLER STARTS RF POWER RAMP DOWN AT END OF BURST T6: LTC4400-X RETURNS TO SHUTDOWN MODE BETWEEN BURSTS ...
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... A variety of RF power amplifiers as well as ramp generation software are available. LTC4400-X Control Loop Stability The LTC4400-X provides a stable control loop for several RF power amplifier models from different manufacturers over a wide range of frequencies, output power levels and V conditions ...
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... Gain peaking may occur, resulting in higher bandwidth and lower phase margin than predicted from the open-loop Bode plot. A low frequency AC SPICE model of the LTC4400-X power controller is included to better determine pole and zero interactions. The user can apply external gains and poles to determine bandwidth and phase margin ...
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... It should be remembered that models are a simplification of the actual circuit. CONTROLLED RF OUTPUT POWER 4400 F04 Figure 5. SPICE Model Open-Loop Gain and Phase Characteristics from LTC4400-1/LTC4400-2 80 180 LOAD 70 160 C = 33pF ...
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... VPCTLO, VRF, Adjust EFB gain to reflect external gain, currently set at 3X** *EFB RF 0 VPCA VIN 3 *VIN VIN *VPCTLO PCTL **Open-loop connections, comment-out EFB, VIN and VPCTLO****** VPCTLO PCTL VRF ******Add AC statement and print statement as required*** .AC DEC 50 100 1E7 *****for PSPICE only***** .OP .PROBE ************************* .END Figure 6. LTC4400-X Low Frequency AC SPICE Model sn4400 4400fas ...
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... LX1 1E-6 1E-6 CC1 80E-3 ND11 ND12 GX6 GXFB + + RX6 GM 1E6 GM – – 1E-6 33E-6 CX6 1.2E-15 Figure 7. LTC4400-X Low Frequency AC Model LTC4400-1/LTC4400-2 ND6 ND7 GX3 GX4 + + RX2 RX3 GM GM 1E6 1E6 – – 1E-6 1E-6 CX2 CX3 8E-15 32E-15 ...
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... LTC4400-1/LTC4400-2 PACKAGE DESCRIPTIO 0.62 0.95 MAX REF 3.85 MAX 2.62 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.20 BSC DATUM ‘A’ 0.30 – 0.50 REF NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5 ...
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... DETAIL “A” (1.93 .006) 0 – 6 TYP 0.53 0.015 1.10 (.021 .006) (.043) DETAIL “A” MAX SEATING PLANE 0.22 – 0.38 (.009 – .015) TYP LTC4400-1/LTC4400-2 0.52 (.206 REF 3.00 0.102 (.118 .004) NOTE 0.86 (.034) REF 0.13 0.076 ( ...
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... RF Power Detector LT5511 High Signal Level Up Converting Mixer LT5512 High Signal Level Down Converting Mixer Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 LTC4400-2 Dual Band Cellular Telephone Transmitter 33pF LTC4400 900MHz RF PA SHDN ...