LM3290 Series

RF Power Envelope Modulator for Power Amplifiers

Catalog

RF Power Envelope Modulator for Power Amplifiers

Part	Mounting Type	Current - Cathode [custom]	Current - Output	Supplier Device Package	Voltage - Output (Min/Fixed) [Min]	Noise - 10Hz to 10kHz	Temperature Coefficient	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Tolerance [Max]	Tolerance [Min]	Reference Type	Function	Voltage - Supply [Max]	Voltage - Supply [Min]
Texas Instruments LM329CZ	Through Hole	600 µA	15 mA	TO-92-3	6.9 V	7 µVrms	100 ppm/°C	1.81 mOhm	70 °C	0 °C	TO-226-3 TO-92-3	5.07 %	-4.35 %	Shunt Buried Zener
Texas Instruments LM329DZ/NOPB	Through Hole	600 µA	15 mA	TO-92-3	6.9 V	7 µVrms	100 ppm/°C	1.81 mOhm	70 °C	0 °C	TO-226-3 TO-92-3	5.07 %	-4.35 %	Shunt Buried Zener
Texas Instruments LM3290TMX/NOPB	Surface Mount			30-DSBGA							30-WFBGA DSBGA
Texas Instruments LM3290TME/NOPB	Surface Mount			30-DSBGA							30-WFBGA DSBGA				Modulator	5 V	2.5 V
Texas Instruments LM3291TME/NOPB	Surface Mount			12-DSBGA (1.64x1.24)							12-WFBGA DSBGA				Modulator

Catalog

RF Power Envelope Modulator for Power Amplifiers

Key Features

• VOUT_RANGEVOUT_ET= 0.6 V to 4.5 VVOUT_APT= 0.4 V to 3.81 V (or VIN– 200 mV)DC Boost For ET Operation:Boost Input Voltage Range: 2.5 V to 5 VHigh-Efficiency (90% typical) with InternalSynchronous RectificationBoost Bypass Function with Low Resistance(150 mΩ typ.)2.7-MHz PWM Switching FrequencyBuck DC-DC for APT and ET Operation:High Operating Frequency for Small ExternalInductor and CapacitorsVOUT_RANGE= 0.4 V to 3.81 V (or VIN– 200 mV)High-Efficiency (95% typical) with InternalSynchronous RectificationLow-Power PFM ModeLM3291 Control:Automatic Control of LM3291 in ET ModeRFFE Control Interface:1.8-V MIPI RFFE 1.1-Compatible DigitalControl Interface26-MHz Write Capability13-MHz Read CapabilityAll trademarks are the property of their respective owners.VOUT_RANGEVOUT_ET= 0.6 V to 4.5 VVOUT_APT= 0.4 V to 3.81 V (or VIN– 200 mV)DC Boost For ET Operation:Boost Input Voltage Range: 2.5 V to 5 VHigh-Efficiency (90% typical) with InternalSynchronous RectificationBoost Bypass Function with Low Resistance(150 mΩ typ.)2.7-MHz PWM Switching FrequencyBuck DC-DC for APT and ET Operation:High Operating Frequency for Small ExternalInductor and CapacitorsVOUT_RANGE= 0.4 V to 3.81 V (or VIN– 200 mV)High-Efficiency (95% typical) with InternalSynchronous RectificationLow-Power PFM ModeLM3291 Control:Automatic Control of LM3291 in ET ModeRFFE Control Interface:1.8-V MIPI RFFE 1.1-Compatible DigitalControl Interface26-MHz Write Capability13-MHz Read CapabilityAll trademarks are the property of their respective owners.

Description

The LM3290, with its companion IC LM3291, is an RF envelope supply modulator (EM) with integrated DC-DC boost converter optimized for Envelope Tracking (ET) RF power amplifiers (PAs). The device enables maximum transmit output power independent of the input battery voltage (battery as low as 2.5 V) and is controlled by the MIPI RFFE 1.1. The LM3290 operates in two active modes: Active Mode 1: For low TX output power, LM3290 may operate in Average Power Tracking (APT) mode, providing a static, but programmable, output voltage to supply the PA. At light load and in APT mode, the LM3290 enters into Pulse Frequency Mode (PFM) operation automatically and operates with reduced switching frequency. In PFM mode, the quiescent current is reduced, which extends the battery life. Active Mode 2: In ET mode, the LM3290 with LM3291 efficiently provides a dynamic, high-bandwidth supply voltage for the PA to maximize total EM + PA efficiency. The envelope modulator follows the envelope reference input signal delivered by the RFIC to the LM3291 via a differential analog input. The output is a single-ended power supply signal to the PA. The LM3290 and LM3291 support 3G, as well as LTE operation up to 20-MHz signal bandwidth. The LM3290 controls the LM3291 companion-IC through direct control signals, and no additional controls are needed from the system. Shutdown, standby, and idle modes turn the EM off and reduce battery current consumption. For the full datasheet, samples, or the EVM hardware and software please contact a TI representative at ET@list.ti.com. The LM3290, with its companion IC LM3291, is an RF envelope supply modulator (EM) with integrated DC-DC boost converter optimized for Envelope Tracking (ET) RF power amplifiers (PAs). The device enables maximum transmit output power independent of the input battery voltage (battery as low as 2.5 V) and is controlled by the MIPI RFFE 1.1. The LM3290 operates in two active modes: Active Mode 1: For low TX output power, LM3290 may operate in Average Power Tracking (APT) mode, providing a static, but programmable, output voltage to supply the PA. At light load and in APT mode, the LM3290 enters into Pulse Frequency Mode (PFM) operation automatically and operates with reduced switching frequency. In PFM mode, the quiescent current is reduced, which extends the battery life. Active Mode 2: In ET mode, the LM3290 with LM3291 efficiently provides a dynamic, high-bandwidth supply voltage for the PA to maximize total EM + PA efficiency. The envelope modulator follows the envelope reference input signal delivered by the RFIC to the LM3291 via a differential analog input. The output is a single-ended power supply signal to the PA. The LM3290 and LM3291 support 3G, as well as LTE operation up to 20-MHz signal bandwidth. The LM3290 controls the LM3291 companion-IC through direct control signals, and no additional controls are needed from the system. Shutdown, standby, and idle modes turn the EM off and reduce battery current consumption. For the full datasheet, samples, or the EVM hardware and software please contact a TI representative at ET@list.ti.com.