FM8648M

富满微电子集团股份有限公司 FINE MADE MICROELECTRONICS GROUP CO., LTD. FM8648M (文件编号：S&CIC2068) Features 0.4 to 6.0GHz SP4T Switch with MIPI SP4T transmitting and receiving switch. The high  Broadband frequency range: 0.4 to 6.0GHz linearity performance and low insertion loss makes  Only one supply voltage needed the device an ideal choice for GSM/WCDMA/LTE  MIPI RFFE V2.1 compatible Interface  Compact 1.1mm x 1.1mm x 0.5mm LGA-9 package, handset and data card applications. MSL3 control, which is a key requirement for many cellular transceivers. This part is packaged in a compact Applications  The FM8648M is compatible with MIPI RFFE V2.1 1.1mm x 1.1mm x 0.5mm LGA package, which 2G/3G/4G/5G antenna TRX switch allows for a small solution size with no need for Description external DC blocking capacitors (when no external The FM8648M is a CMOS silicon-on-insulator (SOI), DC is applied to the device ports). Figure 1. Functional Block Diagram and Pin Configuration Top View Version 1.0 Page 1 Copyright©2021, ShenZhen FM Co.ltd 富满微电子集团股份有限公司 FINE MADE MICROELECTRONICS GROUP CO., LTD. FM8648M (文件编号：S&CIC2068) 0.4 to 6.0GHz SP4T Switch with MIPI Function Characteristics Figure 2. FM8648M Application Circuit Table 1. Pin Descriptions NO. Name Description NO. Name Description 1 VIO Supply Voltage 6 RF3 RF Port3 2 RF4 RF Port4 7 SDATA 8 SCLK 9 GND 3 RF2 RF Port2 4 ANT Antenna Port 5 RF1 RF Port1 RFFE Data Bus RFFE Clock Bus Ground Table 2. Register_0 Truth Table for RF Operating Modes Mode Register_0 D7 D6 D5 D4 D3 D2 D1 D0 All RF Paths Isolated 0 0 0 0 0 0 0 0 RF1 ON 0 0 0 0 0 0 0 1 RF2 ON 0 0 0 0 0 0 1 0 RF3 ON 0 0 0 0 0 1 0 0 RF4 ON 0 0 0 0 1 0 0 0 Version 1.0 Page 2 Copyright©2021, ShenZhen FM Co.ltd 富满微电子集团股份有限公司 FINE MADE MICROELECTRONICS GROUP CO., LTD. FM8648M (文件编号：S&CIC2068) 0.4 to 6.0GHz SP4T Switch with MIPI Electrical Characteristics Table 3. Absolute Maximum Ratings Parameter Symbol Min Max Unit Supply Voltage VIO -0.3 2.5 RFFE Bus Voltage (SDATA, VI -0.3 2.5 V 38 dBm Condition TA=25℃ TA=25℃ SCLK) Max RF Input Power PIN F0=950MHz, 20% DC, VIO=1.8V, ZO=50Ω, (ANT to RF1/2/3/4) TA=25℃ Device Operating Temperature TOP -40 90 Device Storage Temperature TSTG -55 150 VESD(HBM) 1 VESD(CDM) 1 Electrostatic Discharge(All Pins) ℃ kV Human Body Model Charged Device Model Note: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device. Table 4. Recommended Operating Conditions Parameter Symbol MIN Operating Frequency F0 0.4 Supply Voltage VIO 1.65 1.80 1.95 RFFE Bus Voltage(SDATA, SCLK) High VIH 0.8*VIO VIO VIO RFFE Bus Voltage(SDATA, SCLK) Low VIL 0 0 0.2*VIO Version 1.0 Page 3 TYP MAX Unit 6.0 GHz V Copyright©2021, ShenZhen FM Co.ltd 富满微电子集团股份有限公司 FINE MADE MICROELECTRONICS GROUP CO., LTD. FM8648M (文件编号：S&CIC2068) 0.4 to 6.0GHz SP4T Switch with MIPI Table 5. Nominal Operating Parameters Parameter Symbol Specification MIN Normal Condition TYP Unit Condition MAX VIO=1.8V, VIH=1.8V, VIL=0V, PIN=0dBm, VSWR=1:1, TA=25℃, Unless Otherwise Stated DC Performances IIO Supply Current 80 100 6 10 μA Active State Low Power State Timing Performances Switching Time (One On Path to Another) Wakeup Time TSW 2 3 TWK 5 10 TON Turn On Time TVIO_RST VIO Reset Time 20 Switching CMD 50% SCLK to 90%/10% RF End of Low Power State μs 10 50% SCLK to 90% RF Cold Start, 50% VIO to 90% RF VIO Off to it starts to re-power up RF Performances Insertion 0.40 0.45 F0=0.4 to 1.0GHz Loss 0.45 0.50 F0=1.0 to 2.0GHz to 0.50 0.55 F0=2.0 to 3.0GHz 0.55 0.65 F0=3.0 to 3.8GHz 0.65 0.90 F0=4.8 to 6.0GHz (ANT RF1/2/3/4) IL Isolation (ANT to RF1/2/3/4) Input Return Loss (ANT to RF1/2/3/4) ISO RL F0=0.4 to 1.0GHz 40 42 38 40 33 35 28 30 21 24 F0=4.8 to 6.0GHz 12 15 F0=0.4 to 2.7GHz 10 13 F0=2.7 to 6.0GHz F0=1.0 to 2.0GHz F0=2.0 to 3.0GHz dB F0=3.0 to 3.8GHz Input 0.1dB Compression Point (ANT to P0.1dB 38 dBm F0=950MHz, 20% DC RF1/2/3/4) 2nd Order Harmonic (ANT to RF1/2/3/4) 3rd 2F0 Order Harmonic (ANT to RF1/2/3/4) Version 1.0 3F0 -90 -85 F0=950MHz @26dBm -85 -80 F0=950MHz @35dBm -85 -80 F0=1800MHz @32dBm -92 -88 F0=950MHz @26dBm -85 -80 -85 -80 Page 4 dBc F0=950MHz @35dBm F0=1800MHz @32dBm Copyright©2021, ShenZhen FM Co.ltd 富满微电子集团股份有限公司 FINE MADE MICROELECTRONICS GROUP CO., LTD. FM8648M (文件编号：S&CIC2068) 0.4 to 6.0GHz SP4T Switch with MIPI MIPI RFFE Read and Write Timing MIPI RFFE supports the following Command Sequences:  Register Write  Register Read  Register_0 Write Figure 3 and Figure 4 illustrate the timing diagrams for register write command sequence and read command sequence, respectively. Figure 5 describes the Register_0 write command sequence. In the below timing figures, SA[3:0] is the slave address. A[4:0] is the register address. D[7:0] is the data. “P” is a parity bit. Figure 3 Register Write Command Sequence Figure 4 Register Read Command Sequence Version 1.0 Page 5 Copyright©2021, ShenZhen FM Co.ltd 富满微电子集团股份有限公司 FINE MADE MICROELECTRONICS GROUP CO., LTD. FM8648M (文件编号：S&CIC2068) 0.4 to 6.0GHz SP4T Switch with MIPI Figure 5 shows the Register_0 Write Command Sequence. The Command Sequence starts with an SSC, followed by the Register 0 Write Command Frame containing the Slave address, a logic ‘1’ (to denote the command type and address), and a only seven- bit word to be written into Register 0. The Command Sequence ends with a Bus Park Cycle. Figure 5 Register_0 Write Command Sequence Other information such as MIPI RFFE USID programming sequence, MIPI RFFE bus specifications, etc. can be referred to the MIPI Alliance Specification for RF Front-End Control Interface (RFFE), V2.1. Version 1.0 Page 6 Copyright©2021, ShenZhen FM Co.ltd 富满微电子集团股份有限公司 FINE MADE MICROELECTRONICS GROUP CO., LTD. FM8648M (文件编号：S&CIC2068) 0.4 to 6.0GHz SP4T Switch with MIPI Register Definition Table 6. Register Definition Table Register Register Name Data R/W Address Function Description DefaultBROADC Trigger Bits AST_ID support support 0x00 REGISTER_0 7:0 R/W RF Control Register_0 truth Table: 0x00 No Yes 0b0 Yes No 0b0 No No 0b0 No No 0b0 No No Table 2 7 R/W PWR_MODE_1 0b0: Normal Operation Mode Write Value:0b0, Read 0x1C PM_TRIG Value:0b0 0b1: Low Power Mode Write Value:0b1, Read Value:0b1 6 R/W PWR_MODE_0 0b0: Normal Operation 0b0 (ACTIVE) 0b1: Reset all registers to default settings (STARTUP) Write value: 0b1, Read Value: 0b0 5 R/W Trigger_Mask_2 0b0: Trigger_2 enabled 0b1: Trigger_2 disabled 4 R/W Trigger_Mask_1 0b0: Trigger_1 enabled 0b1: Trigger_1 disabled 3 R/W Trigger_Mask_0 0b0: Trigger_0 enabled 0b1: Trigger_0 disabled Note: If any one of the three Trigger Masks is set to a logic '1' the corresponding Trigger is disabled, in that case data written to a register associated with the Trigger goes directly to the destination register. Otherwise, if the Trigger Mask is enabled (via a logic '0'), incoming data is written to the shadow register, and the destination register is unchanged until its corresponding Trigger is asserted. 0b0: Keep its associated destination registers 2 W Trigger_2 unchanged 0b0 Yes 0b1: Load its associated destination registers with the data in the parallel shadow register, provided Trigger_Mask_2 is Version 1.0 Page 7 Copyright©2021, ShenZhen FM Co.ltd No 富满微电子集团股份有限公司 FINE MADE MICROELECTRONICS GROUP CO., LTD. FM8648M (文件编号：S&CIC2068) 0.4 to 6.0GHz SP4T Switch with MIPI disabled(Logic ‘0’) 0b0: Keep its associated destination registers 1 W Trigger_1 unchanged 0b0 Yes No 0b0 Yes No 0x72 No No 0x78 No No 0b00 No No 0x2 No No 0x8 No No 0b1: Load its associated destination registers with the data in the parallel shadow register, provided Trigger_Mask_1 is disabled(Logic ‘0’) 0b0: Keep its associated destination registers 0 W Trigger_0 unchanged 0b1: Load its associated destination registers with the data in the parallel shadow register, provided Trigger_Mask_0 is disabled(Logic ‘0’) 0x1D PRODUCT_ID 7:0 R 0x1E MANUFACTU R 7:0 RER_ID PRODUCT_ID Product Number MANUFACTURE Lower eight bits of MIPI R_ID[7:0] registered Manufacturer ID 0x1F MAN_USID 7:6 R 5:4 R RESERVED MANUFACTURE Upper two bits of MIPI R_ID[9:8] registered Manufacturer ID 3:0 R/W Version 1.0 USID Page 8 Unique Slave Address Copyright©2021, ShenZhen FM Co.ltd 富满微电子集团股份有限公司 FINE MADE MICROELECTRONICS GROUP CO., LTD. FM8648M (文件编号：S&CIC2068) 0.4 to 6.0GHz SP4T Switch with MIPI MIPI RFFE Operating Sequences Here are some recommendations for MIPI RFFE operating sequences to prevent the device from damage. 1) Basic Operational Sequences  Power On -- Apply Supply (VIO)-> Apply MIPI RFFE Bus (SCLK & SDATA) -> Apply RF Signal  Power Off -- Remove RF Signal-> Remove MIPI RFFE Bus (SCLK & SDATA)->Remove Supply (VIO) Figure 6 Basic Power On and Power Off Sequence 2) There shall be at least TON before RF power can be applied to any RF Path Figure 7 Supply and RF Signal On Sequence 3) Once VIO is off, there shall be at least TRST before VIO is allowed to repower on again. Figure 8 Supply and RF Signal On Sequence Version 1.0 Page 9 Copyright©2021, ShenZhen FM Co.ltd 富满微电子集团股份有限公司 FINE MADE MICROELECTRONICS GROUP CO., LTD. FM8648M (文件编号：S&CIC2068) 0.4 to 6.0GHz SP4T Switch with MIPI 4) If RF signal is to be switched from one RF path to another or some paths to others, RF signal shall not be applied during such switching events to protect the devices. Hence, RF signal shall be removed before the switching command is implemented. RF signal shall not be applied before waiting at least TSW. Figure 9 RF Path Switching Sequence 5) RF Signal shall not be applied during low power state. Hence, RF signal shall be removed before device enters low power state. After the state is switched from low power to active, there shall be at least TWK before the RF signal can be applied Figure 10 Enter and Exit Low Power State Sequence Version 1.0 Page 10 Copyright©2021, ShenZhen FM Co.ltd 富满微电子集团股份有限公司 FINE MADE MICROELECTRONICS GROUP CO., LTD. FM8648M (文件编号：S&CIC2068) 0.4 to 6.0GHz SP4T Switch with MIPI Reflow Chart Figure 11 Recommended Lead-Free Reflow Profile Table 7. Reflow Chart Parameters Reflow Profile Parameter Preheat Temperature(TSMIN to TSMAX) 150℃ to 200℃ Preheat Time(ts) 60 to 180 Seconds Ramp-Up Rate(TSMAX to TP) 3℃/s MAX Time Above TL 217℃(tL) 60 to 150 Seconds 260℃ Peak Temperature（TP） Time within 5℃ of Peak Temperature(tP) 20 to 40 Seconds Ramp-Down Rate(TSMAX to TP) 6℃/s MAX Time for 25℃ to Peak Temperature(t25-TP) 8 Minutes MAX ESD Sensitivity Integrated circuits are ESD sensitive and can be damaged by static electric charge. Proper ESD protection techniques should be applied when devices are operated. RoHS Compliant This product does not contain lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE), and are considered RoHS compliant. Version 1.0 Page 11 Copyright©2021, ShenZhen FM Co.ltd