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AFE5804ZCF Datasheet(PDF) 1 Page - Texas Instruments |
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AFE5804ZCF Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 63 page  LNA 8Channels SPI IN1 IN8 .. .. CH1 LVDS OUT CH8 .. VCA/PGA Clamp and LPF Logic/Controls Reference CWSwitchMatrix(8 10) ´ I (10) OUT 12-Bit ADC AFE5804 AFE5804 www.ti.com SBOS442C – JUNE 2008 – REVISED OCTOBER 2011 FULLY-INTEGRATED, 8-CHANNEL ANALOG FRONT-END FOR ULTRASOUND 0.89nV/ √Hz, 12-Bit, 40MSPS, 101mW/Channel Check for Samples: AFE5804 1 FEATURES DESCRIPTION The AFE5804 is a complete analog front-end device 23 • 8-Channel Complete Analog Front-End: specifically designed for ultrasound systems that – LNA, VCA, PGA, LPF, and ADC require low power and small size. • Mode Control for Power/Noise Optimization: The AFE5804 consists of eight channels, including a – Low Noise (Full-Channel): low-noise amplifier (LNA), voltage-controlled 0.89nV/ √Hz (TGC Mode I) attenuator (VCA), programmable gain amplifier 1.23nV/ √Hz (TGC Mode II) (PGA), low-pass filter (LPF), and a 12-bit 1.03nV/ √Hz (PW Mode) analog-to-digital converter (ADC) with low voltage differential signaling (LVDS) data outputs. – Ultra-Low Power: 101mW/Channel (TGC Mode II) The LNA gain is set for 20dB gain and has excellent 65mW/Channel (CW Mode) noise and signal handling capabilities, including fast overload recovery. VCA gain can vary over a 46dB • Low-Noise Pre-Amp (LNA): range with a 0V to 1.2V control voltage common to all – 0.75nV/√Hz channels of the AFE5804. – 20dB Fixed Gain The PGA can be programmed for gains of 20dB, – 280mVPP Linear Input Range 25dB, 27dB, and 30dB. The internal low-pass filter • Variable-Gain Amplifier: can also be programmed to 12.5MHz or 17MHz. – Gain Control Range: 46dB The LVDS outputs of the ADC reduce the number of • PGA Gain Settings: 20dB, 25dB, 27dB, 30dB interface lines to an ASIC or FPGA, thereby enabling the high system integration densities desired for • Low-Pass Filter: portable systems. The ADC can either be operated – Selectable BW: 12.5MHz, 17MHz with internal or external references. The ADC also – 2nd-Order, Bessel features a signal-to-noise ratio (SNR) enhancement mode that can be useful at high gains. • Gain Error: ±0.5dB • Channel Matching: ±0.25dB The AFE5804 is available in a 15mm × 9mm, 135-ball BGA package that is Pb-free • Clamping (RoHS-compliant) and green. It is specified for • Fast Overload Recovery: Two Clock Cycles operation from 0 °C to +85°C. • 12-Bit Analog-to-Digital Converter: – 10MSPS to 50MSPS – 69dB SNR at 10MHz – Serial LVDS Interface • Integrated CW Switch Matrix • 15mm × 9mm, 135-BGA Package: – Pb-Free (RoHS-Compliant) and Green APPLICATIONS • Medical Imaging, Ultrasound – Portable Systems – Battery-Powered Systems 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 Infineon is a registered trademark of Infineon Technologies. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2008–2011, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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