LTC4400-1 LINER [Linear Technology], LTC4400-1 Datasheet
LTC4400-1
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LTC4400-1 Summary of contents
Page 1
... Internal Frequency Compensation Rail-to-Rail Power Control Output Power Control Signal Overvoltage Protection Low Operating Current: 1mA Low Shutdown Current Two Pole PCTL Input Filtering Low Profile (1mm) ThinSOT (LTC4400-1) and 8-Pin MSOP (LTC4400-2) Packages U APPLICATIO S GSM/GPRS Cellular Telephones PCS Devices Wireless Data Modems U ...
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... Maximum Junction Temperature ........................ 125 0.3V) Lead Temperature (Soldering, 10 sec)................ 300 ORDER PART NUMBER PCA LTC4400-1ES6 V 3 PCB GND 4 MS8 PACKAGE S6 PART MARKING 8-LEAD PLASTIC MSOP T = 125 C, JMAX LTWZ The denotes specifications which apply over the full operating = 25 C ...
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... MAX 300 2700 300 2000 –28 18 –26 18 –24 16 –22 16 –28 18 –26 18 150 250 350 LTC4400-1 Detector Characteristics at 2400MHz 10000 –30 C 1000 100 10 1 –24 –20 –16 –12 –8 – INPUT POWER (dBm) sn4400 4400fas UNITS MHz MHz ...
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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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... 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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... LTC4400-1/LTC4400-2 W BLOCK DIAGRA (LTC4400-2) 50 Li-Ion GAIN COMPRESSION 250 8 RF 30k + 28pF RF DET 30k – GND 4 V REF 10 s VBG DELAY 150k 6 SHDN 6 0.4pF DIPLEXER 900MHz RF PA TXENB AUTOZERO – – 80mV – 270kHz FILTER 38k V + 22k REF 51k – ...
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... U power control loop. The RF pin input resistance is typi- cally 250 and the frequency range of this pin is 300MHz to 2700MHz for the LTC4400-1 and 300MHz to 2000MHz for the LTC4400-2. The detector demonstrates excellent efficiency over a wide range of input power. The Schottky detector is biased at about 60 A and drives an on-chip peak detector capacitor of 28pF ...
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... LTC4400-1/LTC4400 APPLICATIO S I FOR ATIO then apply the ramp signal. The user should wait 12 s after SHDN has been asserted high before applying the ramp. The DAC should be settled 2 s after asserting SHDN high. LTC4400-X Timing Diagram T7 (LTC4400-2 ONLY) ...
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... F. 5) Poor layout techniques associated with the RF coupling components may result in high frequency signals bypass- ing the coupler. This could result in stability problems due to the reduction in the coupler loss. LTC4400-1/LTC4400-2 conditions. The oscillation fre- SWR sn4400 4400fas 9 ...
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... LTC4400-1/LTC4400 APPLICATIO S I FOR ATIO Determining External Loop Gain and Bandwidth The external loop voltage gain contributed by the RF chan- nel and RF feedback coupling network should be mea- sured in a closed-loop configuration. A voltage step is applied to PCTL and the change in V detected voltage is K • PCTL, where K is the internal gain ...
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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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... LTC4400-1/LTC4400 APPLICATIO S I FOR ATIO *LTC4400-X Low Frequency AC Spice Model* *July 11, 2001 *Main Network Description GGIN1 ND3 0 ND2 IFB 86E-6 GGXFB IFB 0 0 ND12 33E-6 GGX5 ND11 0 0 ND10 1E-6 GGX6 ND12 0 0 ND11 1E-6 GGX1 ND4 0 0 ND3 1E-6 GGX2 ND6 0 0 ND4 1E-6 ...
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... ND5 – – 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 ND8 IFB 2X BUFFER EX1 ...
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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. MOLD FLASH SHALL NOT EXCEED 0.254mm 6 ...
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... BSC 4.90 0.15 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 (.005 .003) 0.65 MSOP (MS8) 0802 ( ...
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... LTC4400-1/LTC4400-2 U TYPICAL APPLICATION Li-Ion SHDN BSEL 0.1 F RELATED PARTS PART NUMBER DESCRIPTION LTC1261 Regulated Inductorless Voltage Inverter LTC1732 Li-Ion Linear Charger LTC1734/LTC1734L ThinSOT Li-Ion Battery Charger LTC1754 ThinSOT Charge Pump LTC1757A RF Power Controller LTC1758 RF Power Controller LTC1957 RF Power Controller LTC4052 ...