Electronic Components Datasheet Search |
|
MAX2395ETI Datasheet(PDF) 6 Page - Maxim Integrated Products |
|
MAX2395ETI Datasheet(HTML) 6 Page - Maxim Integrated Products |
6 / 13 page WCDMA Quasi-Direct Modulator with VGA and PA Driver 6 _______________________________________________________________________________________ Pin Description PIN NAME FUNCTION 1 N.C. Connect to RF GND on PCB 2 POUT Transmitter Output. This is an open-collector output and requires a pullup inductor to the supply voltage. This pullup inductor can be part of the output matching network and can be connected directly to the battery. 3VCC_PA Supply for the PA Driver. This pin must be bypassed with a capacitor to system ground as close to the pin as possible. Do not share the ground vias for the bypass capacitor with any other branch (see the Typical Operating Circuit). 4 BIAS_SET Bias-Setting Pin. The DC voltage at this pin is a bandgap voltage. For nominal bias, connect a 12k Ω resistor to ground. The value of this resistor can be adjusted to alter current consumption, linearity, and noise performance of the RF output. 5 VGC Gain-Control Pin. Analog input pin controls both the IF VGA and RF VGA gain. When not driven, the voltage on this pin is typically +1.5V. An RC filter on this pin must be used to filter out DAC noise or the PDM clock. 6VCC_IF Supply for IF Section. Bypass to system ground with a capacitor as close to the pin as possible. Do not share the ground vias for the bypass capacitor with any other branch (see the Typical Operating Circuit). 7VCC_BB Supply for Baseband Section. Bypass to system ground with a capacitor as close to the pin as possible. Do not share the ground vias for the bypass capacitor with any other branch (see the Typical Operating Circuit). 8 IDLE Idle CMOS Digital Input. Drive LOW to place the device in WCDMA compressed mode (VCO and PLL are ON; all others are OFF). A small RC lowpass filter can be used to minimize the effect of external digital noise. 9 SHDN Shutdown CMOS Digital Input. Drive LOW to place the device in shutdown (everything OFF except serial interface and registers, which retain their values). A small RC lowpass filter can be used to minimize the effect of external digital noise. A logic-low on the SHDN pin overrides the serial bus SHDN bit status. 10, 11 I+, I- Differential I-Channel Baseband Inputs to the Baseband Filter 12, 13 Q+, Q- Differential Q-Channel Baseband Inputs to the Baseband Filter 14, 24, 25 N.C. Leave Open 15 LD Lock CMOS Output. This pin is an open-drain output. Output HIGH indicates the RF PLL is locked. 16 REF Reference Frequency Input. This pin is internally biased to approximately +1.0V and must be AC- coupled to the reference source. This is a high-impedance port and can be externally terminated to the desired impedance. 17 VCC_PLL Supply for PLL. Bypass with a capacitor to GND (see the Typical Operating Circuit). 18 VCC_CP Supply for Synthesizer Charge Pump. Bypass with a capacitor to GND (see the Typical Operating Circuit). 19 RFCP RF Charge-Pump Output. Connect the RF PLL’s loop filter between RFCP and system ground. Keep the line from this pin to the tank tune input as short as possible to prevent spurious pickup. Connect the loop filter as close to the tune input as possible. |
Similar Part No. - MAX2395ETI |
|
Similar Description - MAX2395ETI |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |