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Ultra-Low-Power, High-Dynamic Performance, 7.5Msps Analog Front End

Product Details

The MAX5863 ultra-low-power, highly integrated analog front end is ideal for portable communication equipment such as handsets, PDAs, WLAN, and 3G wireless terminals. The MAX5863 integrates dual 8-bit receive ADCs and dual 10-bit transmit DACs while providing the highest dynamic performance at ultra-low power. The ADCs' analog I-Q input amplifiers are fully differential and accept 1VP-P full-scale signals. Typical I-Q channel phase matching is ±0.03° and amplitude matching is ±0.03dB. The ADCs feature 48.5dB SINAD and 69dBc spurious-free dynamic range (SFDR) at fIN = 1.875MHz and fCLK = 7.5Msps. The DACs' analog I-Q outputs are fully differential with ±400mV full-scale output, and 1.4V common-mode level. Typical I-Q channel phase match is ±0.15° and gain match is ±0.05dB. The DACs also feature dual 10-bit resolution with 73dBc SFDR, and 61dB SNR at fOUT = 620kHz and fCLK = 7.5MHz.

The ADCs and DACs operate simultaneously or independently for frequency-division duplex (FDD) and time-division duplex (TDD) modes. A 3-wire serial interface controls power-down and transceiver modes of operation. The typical operating power is 22.8mW at fCLK = 7.5Msps with the ADCs and DACs operating simultaneously in transceiver mode. The MAX5863 features an internal 1.024V voltage reference that is stable over the entire operating power-supply range and temperature range. The MAX5863 operates on a +2.7V to +3.3V analog power supply and a +1.8V to +3.3V digital I/O power supply for logic compatibility. The quiescent current is 3.5mA in Idle Mode™ and 1µA in shutdown mode. The MAX5863 is specified for the extended (-40°C to +85°C) temperature range and is available in a 48-pin thin QFN package. See a parametric table of the complete family of pin-compatible AFEs.

Key Features

  • Integrated Dual 8-Bit ADCs and Dual 10-Bit DACs
  • Ultra-Low Power
    • 22.8mW at fCLK = 7.5MHz (Transceiver Mode)
    • 20.7mW at fCLK = 5.2MHz (Transceiver Mode)
    • Low-Current Idle and Shutdown Modes
  • Excellent Dynamic Performance
    • 48.5dB SINAD at fIN = 1.875MHz (ADC)
    • 73dBc SFDR at fOUT = 620kHz (DAC)
  • Excellent Gain/Phase Match
    • ±0.03° Phase, ±0.03dB Gain at fIN = 1.875MHz (ADC)
  • Internal/External Reference Option
  • +1.8V to +3.3V Digital Output Level (TTL/CMOS Compatible)
  • Multiplexed Parallel Digital Input/Output for ADCs/DACs
  • Miniature 48-Pin Thin QFN Package (7mm x 7mm)
  • Evaluation Kit Available (Order MAX5865EVKIT)

Applications/Uses

  • 3G Wireless Terminals
  • Fixed/Mobile Broadband Wireless Modems
  • Narrowband/Wideband CDMA Handsets
  • PDAs
Parametric specs for High Speed AFEs
# Input Channels (ADC) 2
Conversion Speed (Msps) (ADC) 7.5
SNR (dB) (@ fIN) 48.6 @ 1.875MHz
Resolution (bits) (DAC) 10
Output Chan. (DAC) 2
Speed (Msps) (DAC) 7.5
SFDR (dBc) (@ fOUT) 73 @ 620kHz
THD (dBc) (@ fOUT) -71 @ 620kHz
Noise Spectral Density (dBFS/Hz) (@ fOUT) -127 @ 620kHz
VSUPPLY (V) 1.8
2.7 to 3.3
Package/Pins TQFN/48

Simplified Block Diagram

MAX5863: Functional Diagram MAX5863: Functional Diagram Zoom icon

Technical Docs

Design & Development

Click any title below to view the detail page where available.

Description

The MAX5865 evaluation kit (EV kit) is a fully assembled and tested circuit board that contains all the components necessary to evaluate the performance of the MAX5865 40Msps analog front end. The MAX5865 integrates a dual-channel analog-to-digital converter (ADC), a dual-channel digital-to-analog converter (DAC), and a 1.024V internal voltage reference. The EV kit board accepts AC- or DC-coupled, differential or single-ended analog inputs for the receive ADC and includes circuitry that converts the transmit DAC differential output signals to single-ended analog outputs. The EV kit includes circuitry that generates a clock signal from an AC sine wave input signal. The EV kit operates from a +3.0V analog power supply, +3.0V digital power supply, and ±5V bipolar power supply.

The EV kit comes with Windows® 98/2000/XP-compatible software that provides an interface to exercise the features of the MAX5865. The program is menu driven and offers a graphical user interface (GUI) with control buttons and status displays. The GUI is used to control the MAX5865 SPI-compatible serial interface.

The MAX5865 EV kit evaluates the 22Msps MAX5864 or the 7.5Msps MAX5863 analog front end (IC replacement is required).

View Details

Features

  • Quick Dynamic Performance Evaluation
  • 50Ω Matched Clock Input and Analog Signal Lines
  • Single-Ended to Fully Differential Analog Input Signal Configuration
  • Differential to Single-Ended Output Signal-Conversion Circuitry
  • AC- or DC-Coupled Input Signals Configuration
  • SMA Coaxial Connectors for Clock Input, Analog Inputs, and Analog Output
  • On-Board Clock-Shaping Circuit
  • High-Speed PC Board Design
  • Fully Assembled and Tested
  • Windows-Compatible Software

Description

The MAX5865 evaluation kit (EV kit) is a fully assembled and tested circuit board that contains all the components necessary to evaluate the performance of the MAX5865 40Msps analog front end. The MAX5865 integrates a dual-channel analog-to-digital converter (ADC), a dual-channel digital-to-analog converter (DAC), and a 1.024V internal voltage reference. The EV kit board accepts AC- or DC-coupled, differential or single-ended analog inputs for the receive ADC and includes circuitry that converts the transmit DAC differential output signals to single-ended analog outputs. The EV kit includes circuitry that generates a clock signal from an AC sine wave input signal. The EV kit operates from a +3.0V analog power supply, +3.0V digital power supply, and ±5V bipolar power supply.

The EV kit comes with Windows® 98/2000/XP-compatible software that provides an interface to exercise the features of the MAX5865. The program is menu driven and offers a graphical user interface (GUI) with control buttons and status displays. The GUI is used to control the MAX5865 SPI-compatible serial interface.

The MAX5865 EV kit evaluates the 22Msps MAX5864 or the 7.5Msps MAX5863 analog front end (IC replacement is required).

View Details

Features

  • Quick Dynamic Performance Evaluation
  • 50Ω Matched Clock Input and Analog Signal Lines
  • Single-Ended to Fully Differential Analog Input Signal Configuration
  • Differential to Single-Ended Output Signal-Conversion Circuitry
  • AC- or DC-Coupled Input Signals Configuration
  • SMA Coaxial Connectors for Clock Input, Analog Inputs, and Analog Output
  • On-Board Clock-Shaping Circuit
  • High-Speed PC Board Design
  • Fully Assembled and Tested
  • Windows-Compatible Software

Description

The MAX5865 evaluation kit (EV kit) is a fully assembled and tested circuit board that contains all the components necessary to evaluate the performance of the MAX5865 40Msps analog front end. The MAX5865 integrates a dual-channel analog-to-digital converter (ADC), a dual-channel digital-to-analog converter (DAC), and a 1.024V internal voltage reference. The EV kit board accepts AC- or DC-coupled, differential or single-ended analog inputs for the receive ADC and includes circuitry that converts the transmit DAC differential output signals to single-ended analog outputs. The EV kit includes circuitry that generates a clock signal from an AC sine wave input signal. The EV kit operates from a +3.0V analog power supply, +3.0V digital power supply, and ±5V bipolar power supply.

The EV kit comes with Windows® 98/2000/XP-compatible software that provides an interface to exercise the features of the MAX5865. The program is menu driven and offers a graphical user interface (GUI) with control buttons and status displays. The GUI is used to control the MAX5865 SPI-compatible serial interface.

The MAX5865 EV kit evaluates the 22Msps MAX5864 or the 7.5Msps MAX5863 analog front end (IC replacement is required).

View Details

Features

  • Quick Dynamic Performance Evaluation
  • 50Ω Matched Clock Input and Analog Signal Lines
  • Single-Ended to Fully Differential Analog Input Signal Configuration
  • Differential to Single-Ended Output Signal-Conversion Circuitry
  • AC- or DC-Coupled Input Signals Configuration
  • SMA Coaxial Connectors for Clock Input, Analog Inputs, and Analog Output
  • On-Board Clock-Shaping Circuit
  • High-Speed PC Board Design
  • Fully Assembled and Tested
  • Windows-Compatible Software

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Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.

Parameters

Parametric specs for High Speed AFEs
# Input Channels (ADC) 2
Conversion Speed (Msps) (ADC) 7.5
SNR (dB) (@ fIN) 48.6 @ 1.875MHz
Resolution (bits) (DAC) 10
Output Chan. (DAC) 2
Speed (Msps) (DAC) 7.5
SFDR (dBc) (@ fOUT) 73 @ 620kHz
THD (dBc) (@ fOUT) -71 @ 620kHz
Noise Spectral Density (dBFS/Hz) (@ fOUT) -127 @ 620kHz
VSUPPLY (V) 1.8
2.7 to 3.3
Package/Pins TQFN/48

Key Features

  • Integrated Dual 8-Bit ADCs and Dual 10-Bit DACs
  • Ultra-Low Power
    • 22.8mW at fCLK = 7.5MHz (Transceiver Mode)
    • 20.7mW at fCLK = 5.2MHz (Transceiver Mode)
    • Low-Current Idle and Shutdown Modes
  • Excellent Dynamic Performance
    • 48.5dB SINAD at fIN = 1.875MHz (ADC)
    • 73dBc SFDR at fOUT = 620kHz (DAC)
  • Excellent Gain/Phase Match
    • ±0.03° Phase, ±0.03dB Gain at fIN = 1.875MHz (ADC)
  • Internal/External Reference Option
  • +1.8V to +3.3V Digital Output Level (TTL/CMOS Compatible)
  • Multiplexed Parallel Digital Input/Output for ADCs/DACs
  • Miniature 48-Pin Thin QFN Package (7mm x 7mm)
  • Evaluation Kit Available (Order MAX5865EVKIT)

Applications/Uses

  • 3G Wireless Terminals
  • Fixed/Mobile Broadband Wireless Modems
  • Narrowband/Wideband CDMA Handsets
  • PDAs

Description

The MAX5863 ultra-low-power, highly integrated analog front end is ideal for portable communication equipment such as handsets, PDAs, WLAN, and 3G wireless terminals. The MAX5863 integrates dual 8-bit receive ADCs and dual 10-bit transmit DACs while providing the highest dynamic performance at ultra-low power. The ADCs' analog I-Q input amplifiers are fully differential and accept 1VP-P full-scale signals. Typical I-Q channel phase matching is ±0.03° and amplitude matching is ±0.03dB. The ADCs feature 48.5dB SINAD and 69dBc spurious-free dynamic range (SFDR) at fIN = 1.875MHz and fCLK = 7.5Msps. The DACs' analog I-Q outputs are fully differential with ±400mV full-scale output, and 1.4V common-mode level. Typical I-Q channel phase match is ±0.15° and gain match is ±0.05dB. The DACs also feature dual 10-bit resolution with 73dBc SFDR, and 61dB SNR at fOUT = 620kHz and fCLK = 7.5MHz.

The ADCs and DACs operate simultaneously or independently for frequency-division duplex (FDD) and time-division duplex (TDD) modes. A 3-wire serial interface controls power-down and transceiver modes of operation. The typical operating power is 22.8mW at fCLK = 7.5Msps with the ADCs and DACs operating simultaneously in transceiver mode. The MAX5863 features an internal 1.024V voltage reference that is stable over the entire operating power-supply range and temperature range. The MAX5863 operates on a +2.7V to +3.3V analog power supply and a +1.8V to +3.3V digital I/O power supply for logic compatibility. The quiescent current is 3.5mA in Idle Mode™ and 1µA in shutdown mode. The MAX5863 is specified for the extended (-40°C to +85°C) temperature range and is available in a 48-pin thin QFN package. See a parametric table of the complete family of pin-compatible AFEs.

Simplified Block Diagram

MAX5863: Functional Diagram MAX5863: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.