Hittite Microwave Single Chip RX and DPD solution featuring ADC: HMCAD1520 PLL: HMC830 1 Hittite Microwave Confidential February 27, 2012 A/D Converter Solutions HMCAD1520 – Multi-Mode ADC w/ Integrated Cross Point Switches Part Number Function / Mode Resolution (bits) Sample Rate (MSPS) Power Dissipation[2][3] SNR (dBFS) SFDR (dBc) Package HMCAD1520 High Speed Single Channel 12 640 490 mW 70 60 / 75 [1] LP7DE High Speed Dual Channel 12 320 490 mW 70 60 / 78 [1] High Speed Quad Channel 12 160 490 mW 70 60 / 78 [1] Precision Quad Channel 14 105 603 mW 74 83 Precision Quad Channel 14 80 530 mW 75 85 Features Multiple Modes Single channel 12-bit up to 640 MSPS Dual channel 12-bit up to 320 MSPS Quad channel 12-bit up to 160 MSPS Quad channel 14-bit up to 105 MSPS SPI Configurable Operational Modes SPI Configurable Number of Channels 1µs Switching Time Between Configurations Internal 1X to 8X Clock Divider LVDS output Full robustness inn RSDS (Low Current) Mode Ultra Low Power Dissipation Dynamic power vs sample rate scaling Coarse & Fine Gain Control 48 Pin QFN Package [1] Excluding Interleaving Spurs Supply Voltage (Vdd) +1.8 Vdc Analog Supply (Avdd) and +1.8Vdc Digital Supply (Dvdd) [3] Output Supply Voltage (OVdd) +1.7 to +3.6 Vdc [2] 2 February 27, 2012 Single Chip HMCAD1520 and HMC830 based solution HMCAD1520 and HMC830 High Speed Quad channel Mode: Sample rate up to 160MSPS available Recommended Sample rate: 125MSPS 14-bit LVDS mode available, giving 13-bit resolution at 125MSPS 3 of 4 channels in use: Last channel can be put in Sleep mode to save power PLL: HMC830 Internal clock divider allows up to 1000MHz input ADC clock (125MSPS*8X) Less than 200fsrms clock jitter in total clock path (including both PLL and ADC) FPGA Firmware: Hittite EasyStackTM FPGA firmware code available for Xilinx Spartan 6 3 Hittite Microwave Confidential February 27, 2012 Measurement results Board #1: Temp=25ºC Setup: Quad Channel High speed mode FS: 125 MSPS Fclk = 500MHz (clock divide = 4) LVDS mode: 14-bit ADC Total Power Dissipation (inc. LVDS): 330 mW - for 3 channels active (395 for 4 channels) SFDR caused by interleaving artifact. Two channels are sampling in antiphase with small time skew (~2ps) between them. Results in a spur at frequency FS/2-FIN. Interleaving spur not expected to affect the DPD algorithm Fin Band SNR* SNDR SFDR HD2 HD3 140MHz Nyquist 71.2dBFS 58.9dBFS 58.3dBc 91.7dBc 83.4dBc 140MHz 20MHz (130-150MHz) 75.8dBFS 75.6dBFS 93.2dBc Out of Band Out of Band 153.6MHz Nyquist 71.4dBFS 59.7dBFS 59.1dBc 89.9dBc 88.3dBc * SNR excluding Interleaving spurs 4 Hittite Microwave Confidential February 27, 2012 Measurement results Board #2: Temp=-40ºC, 25ºC and 85ºC Setup: Quad Channel High speed mode FS: 125 MSPS Fclk = 500MHz (clock divide = 4) LVDS mode: 14-bit ADC Total Power Dissipation (inc. LVDS): 330 mW - for 3 channels active (395 for 4 channels) SFDR caused by interleaving artifact. Two channels are sampling in antiphase with small time skew (~2ps) between them. Results in a spur at frequency FS/2-FIN. Interleaving spur not expected to affect the DPD algorithm Fin Band Temp SNR* SNDR SFDR HD2 HD3 140MHz Nyquist -40ºC 69.9dBFS 62.5dBFS 62.8dBc 87.9dBc 81.3dBc 140MHz Nyquist 25ºC 70.9dBFS 61.9dBFS 61.7dBc 87.4dBc 78.4dBc 140MHz Nyquist 85ºC 70.5dBFS 60.3dBFS 59.7dBc 82.0dBc 76.3dBc 140MHz 20MHz (130-150MHz) -40ºC 74.5dBFS 75.3dBFS 87.6dBc Out of Band Out of Band 140MHz 20MHz (130-150MHz) 25ºC 75.5dBFS 75.3dBFS 93.0dBc Out of Band Out of Band 140MHz 20MHz (130-150MHz) 85ºC 75.1dBFS 75.5dBFS 94.2dBc Out of Band Out of Band 153.6MHz Nyquist -40ºC 68.6dBFS 62.5dBFS 63.2dBc 93.5dBc 81.4dBc 153.6MHz Nyquist 25ºC 69.6dBFS 62.3dBFS 62.4dBc 87.9dBc 82.4dBc 153.6MHz Nyquist 85ºC 70.9dBFS 61.2dBFS 60.8dBc 83.7dBc 78.7dBc * SNR excluding Interleaving spurs 5 Ev.Board # FMC-301A-005 Hittite Microwave Confidential February 27, 2012 FFT plots: Fin=140MHz, Temp=25ºC Setup: Quad Channel High speed mode FS: 125MSPS Fclk = 500MHz (clock divide = 4) LVDS mode: 14-bit Full Nyquist band FS: 125MSPS Fin: 140MHz folded to 15MHz 6 20MHz (130-150MHz Band) FS: 125MSPS Fin: 130-150 MHz folded to 5-25MHz Hittite Microwave Confidential February 27, 2012 FFT plot: Fin=153.6MHz, Temp=25ºC Setup: Quad Channel High speed mode FS: 125MSPS Fclk = 500MHz (clock divide = 4) LVDS mode: 14-bit HD2: -89.9 dBc HD3: -88.3 dBc HD5: -78.6 dBc HD7: -92.9 dBc HD9: -95.1 dBc Full Nyquist band FS: 125MSPS Fin: 153.6MHz folded to 28.6MHz 7 Hittite Microwave Confidential February 27, 2012 FPGA Solution Recommended FPGA for HMCAD1520 based solution: Xilinx Spartan 6 Low cost solution Size: Down to 8 mm x 8 mm Internal Memory: 24KSamples Hittite EasyStack: FPGA Firmware code stack Available for Xilinx Spartan 6 as a part of HMCAD1520 offering EasyStack includes HMCAD1520 LVDS receiver and De-serialization HMCAD1520Configuration USB data output 8 Hittite Microwave Confidential February 27, 2012 A/D Converter Solutions Analog Made EasyTM Analog Made EasyTM EasySuiteTM: Evaluation and Prototyping Platform Environment The EasySuiteTM PC tool handles ADC configuration and ADC data analysis. With EasySuiteTM, the user can easily configure the ADC through the SPI port, perform measurements and analyse the result. EasySuiteTM includes Time-Interleave post processing, for Time-Interleave artifact analysis EasyBoardTM: Supplied Evaluation Board Connected to Xilinx© Standard FMC Board EasyStackTM: Firmware Code Stack, Currently Available for Xilinx© EasyStack handles data transport over LVDS from the ADC to the FPGA, and from the FPGA to the PC. EasyStack includes an ADC data processing API 9 February 27, 2012 HMCAD1520 and HMC830 Conclusion Hittite HMCAD1520&HMC830 measurements for RX and DPD: RX and DPD ADC in one 7mm x 7mm package Very low Power Dissipation: Total 330 mW Below 200 fsrms total clock path jitter when used together with HMC830 RX Performance: 140MHz Fin, 20MHz BW (130-150MHz) 75.6dB SNDR 93.2dB SFDR DPD Performance: 153.6Hz Fin 71.4dB SNR 89.9dB HD2 88.3dB HD3 59.1dB SFDR – Dominated by 2.5psrms interleaving spur which is not expected to affect the DPD algorithm Performance numbers stable over full -40 to +85ºC temperature range Firmware (EasyStack) to utilize low-cost high performance FPGA: Xilinx Spartan6 Evaluation kit to configure, measure and analyze ADC 10 Hittite Microwave Confidential February 27, 2012