LTC4401-1 LINER [Linear Technology], LTC4401-1 Datasheet
LTC4401-1
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LTC4401-1 Summary of contents
Page 1
... 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) SOT-23 (ThinSOT™) (LTC4401-1) and 8-Pin MSOP (LTC4401-2) Packages U APPLICATIO S GSM/GPRS Cellular Telephones PCS Devices Wireless Data Modems U ...
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... CC Lead Temperature (Soldering, 10 sec)................. 300 C + 0.3V ORDER PART NUMBER PCA LTC4401-1ES6 V 3 PCB GND 4 S6 PART MARKING 8-LEAD PLASTIC MSOP LTXA T = 125 C, JMAX The denotes specifications which apply over the full operating = 3.6V, SHDN = HI, unless otherwise noted. ...
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... TYP MAX 300 2700 300 2000 –28 18 –26 18 –24 16 –22 16 –28 18 –26 18 150 250 350 LTC4401-1 Detector Characteristics at 2400MHz 10000 –30 C 1000 100 10 1 –24 –20 –16 –12 –8 – INPUT POWER (dBm) UNITS MHz MHz dBm ...
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... A coupling capacitor of 33pF CC must be used to connect to the ground referenced direc- tional coupler. The frequency range is 300MHz to 2700MHz for the LTC4401-1 and 300MHz to 2000MHz for the LTC4401-2. This pin has an internal 250 termination, an internal Schottky diode detector and peak detector capaci- tor. ...
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... Li-Ion AUTOZERO – GAIN – 80mV – 270kHz FILTER + 38k RF DET – V 22k REF 51k 33.4k TXENB 10 s DELAY 150k 4 3 PCTL SHDN LTC4401-1/LTC4401-2 50 TXENB + GM CLAMP + C BUFFER C – 30k 30k + – 100 CONTROL LTC4401-1 4401 PCA 4401fa 5 ...
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... LTC4401-1/LTC4401-2 W BLOCK DIAGRA (LTC4401-2) 68 33pF Li-Ion GAIN COMPRESSION 250 8 RF 30k + 28pF RF DET 30k – GND REF VBG DELAY 150k 6 SHDN 6 DIPLEXER 900MHZ TXENB AUTOZERO – – 80mV – 270kHz FILTER 38k V + 22k REF 51k – ...
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... DAC voltage at the PCTL pin by the control amplifier to close the RF power control loop. The RF pin input resistance is typically 250 range of this pin is 300MHz to 2700MHz for the LTC4401-1 and 300MHz to 2000MHz for the LTC4401-2. The detector demonstrates excellent efficiency over a wide range of input power ...
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... LTC4401-1/LTC4401 APPLICATIO S I FOR ATIO Enable: When SHDN is asserted high the part will auto- matically calibrate out all offsets. This takes <10 s and is controlled by an internal delay circuit. After will step up to the starting voltage of 450mV. The user can then apply the ramp signal ...
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... F. 5) Poor layout techniques associated with the directional coupler area may result in high frequency signals bypass- ing the coupler. This could result in stability problems due to the reduction in the coupler loss. LTC4401-1/LTC4401-2 conditions. The oscillation fre- SWR 4401fa 9 ...
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... LTC4401-1/LTC4401 APPLICATIO S I FOR ATIO Determining External Loop Gain and Bandwidth The external loop voltage gain contributed by the RF chan- nel and directional coupler network should be measured in a closed-loop configuration. A voltage step is applied to PCTL and the change measured. The detected PCA/B voltage is K • ...
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... It should be remembered that models are a simplification of the actual circuit. CONTROLLED RF OUTPUT POWER 4401 F04 Figure 5. SPICE Model Open-Loop Gain and Phase Characteristics from LTC4401-1/LTC4401-2 80 180 LOAD 70 160 C = 33pF ...
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... LTC4401-1/LTC4401 APPLICATIO S I FOR ATIO *LTC4401-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 65E-3 ND11 ND12 GX6 GXFB + + RX6 1E6 GM GM – – 1E-6 33E-6 CX6 1.2E-15 Figure 7. LTC4401-X Low Frequency AC Model LTC4401-1/LTC4401-2 ND6 ND7 GX3 GX4 + + RX2 RX3 1E6 GM 1E6 GM – – 1E-6 1E-6 CX2 CX3 8E-15 32E-15 ND8 IFB 2X BUFFER EX1 ...
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... LTC4401-1/LTC4401-2 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 0.152 DETAIL “A” (.193 .006) 0 – 6 TYP 0.53 0.152 1.10 (.021 .006) (.043) DETAIL “A” MAX SEATING PLANE 0.22 – 0.38 (.009 – .015) TYP LTC4401-1/LTC4401-2 0.52 (.0205 REF 3.00 0.102 (.118 .004) (NOTE 0.86 (.034) REF 0.127 0.076 (.005 .003) ...
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... LTC4401-1/LTC4401-2 U TYPICAL APPLICATION Li-Ion SHDN BSEL 0.1 F RELATED PARTS PART NUMBER DESCRIPTION LTC1503 Inductorless Step-Down DC/DC Converter LTC1555L-1.8 SIM Power Supply and Level Translator ® LT 1615 Step-Up DC/DC Converter LT1617 Inverting DC/DC Converter LTC1682 Low Noise Charge Pump with LDO LTC1734 SOT-23 Li-Ion Battery Charger ...