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10-Bit, 45Msps, Full-Duplex, Analog Front-End

Ultra-Low Power AFE with Integrated Tx DACs, Rx ADCs, and Auxiliary Control Data Converters

Product Details

Key Features

Applications/Uses

Parametric specs for Fast CODECs / Analog Front-End (AFE)
# Input Channels (ADC) 2
Conversion Speed (Msps) (ADC) 45
SNR (dB) (@ fIN) 54.1 @ 5.5MHz
Resolution (bits) (DAC) 10
Output Chan. (DAC) 2
Speed (Msps) (DAC) 45
SFDR (dBc) (@ fOUT) 70.3 @ 2.2MHz
THD (dBc) (@ fOUT) -68.1 @ 2.2MHz
Noise Spectral Density (dBFS/Hz) (@ fOUT) -129 @ 2.2MHz
VSUPPLY (V) 1.8
2.7 to 3.3
Package/Pins TQFN/56
Budgetary
Price (See Notes)
10.92
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Simplified Block Diagram

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Parameters

Parametric specs for Fast CODECs / Analog Front-End (AFE)
# Input Channels (ADC) 2
Conversion Speed (Msps) (ADC) 45
SNR (dB) (@ fIN) 54.1 @ 5.5MHz
Resolution (bits) (DAC) 10
Output Chan. (DAC) 2
Speed (Msps) (DAC) 45
SFDR (dBc) (@ fOUT) 70.3 @ 2.2MHz
THD (dBc) (@ fOUT) -68.1 @ 2.2MHz
Noise Spectral Density (dBFS/Hz) (@ fOUT) -129 @ 2.2MHz
VSUPPLY (V) 1.8
2.7 to 3.3
Package/Pins TQFN/56
Budgetary
Price (See Notes)
10.92

Key Features

  • Dual 10-Bit, 45Msps Rx ADC and Dual 10-Bit, 45Msps Tx DAC
  • Ultra-Low Power
    • 91.8mW at fCLK = 45MHz, FD Mode
    • 79.2mW at fCLK = 45MHz, Slow Rx Mode
    • 49.5mW at fCLK = 45MHz, Slow Tx Mode
    • Low-Current Standby and Shutdown Modes
  • Programmable Tx DAC Common-Mode DC Level and I/Q Offset Trim
  • Excellent Dynamic Performance
    • SNR = 54.1dB at fIN = 5.5MHz (Rx ADC)
    • SFDR = 70.3dBc at fOUT = 2.2MHz (Tx DAC)
  • Three 12-Bit, 1µs Aux-DACs
  • 10-Bit, 333ksps Aux-ADC with 4:1 Input Mux and Data Averaging
  • Excellent Gain/Phase Match
    • ±0.03° Phase, ±0.02dB Gain (Rx ADC) at fIN = 5.5MHz
  • Multiplexed Parallel Digital I/O
  • Serial-Interface Control
  • Versatile Power-Control Circuits
    • Shutdown, Standby, Idle, Tx/Rx Disable
  • Miniature 56-Pin TQFN Package (7mm x 7mm x 0.8mm)

Applications/Uses

  • 802.11a/b/g WLAN
  • Portable Communication Equipment
  • VoIP Terminals
  • WiMAX CPEs

Description

The MAX19713 is an ultra-low-power, highly integrated mixed-signal analog front-end (AFE) ideal for wideband communication applications operating in full-duplex (FD) mode. Optimized for high dynamic performance and ultra-low power, the device integrates a dual 10-bit, 45Msps receive (Rx) ADC; dual 10-bit, 45Msps transmit (Tx) DAC; three fast-settling 12-bit aux-DAC channels for ancillary RF front-end control; and a 10-bit, 333ksps housekeeping aux-ADC. The typical operating power in FD mode is 91.8mW at a 45MHz clock frequency.

The Rx ADCs feature 54dB SINAD and 72.2dBc SFDR at 5.5MHz input frequency with a 45MHz clock frequency. The analog I/Q input amplifiers are fully differential and accept 1.024VP-P full-scale signals. Typical I/Q channel matching is ±0.03 phase and ±0.02dB gain.

The Tx DACs feature 70.3dBc SFDR at fOUT = 2.2MHz and fCLK = 45MHz. The analog I/Q full-scale output voltage range is ±400mV differential. The output DC common-mode voltage is selectable from 0.71V to 1.06V. The I/Q channel offset is adjustable to optimize radio lineup sideband/carrier suppression. Typical I/Q channel matching is ±0.01dB gain and ±0.05° phase.

Two independent 10-bit parallel, high-speed digital buses used by the Rx ADC and Tx DAC allow full-duplex operation for frequency-division duplex applications. The Rx ADC and Tx DAC can be disabled independently to optimize power management. A 3-wire serial interface controls power-management modes, the aux-DAC channels, and the aux-ADC channels.

The MAX19713 operates on a single 2.7V to 3.3V analog supply and 1.8V to 3.3V digital I/O supply. The MAX19713 is specified for the extended (-40°C to +85°C) temperature range and is available in a 56-pin, thin QFN package. The Selector Guide at the end of the data sheet lists other pin-compatible versions in this AFE family. For time-division duplex (TDD) applications, refer to the MAX19705–MAX19708 AFE family of products.

Simplified Block Diagram

MAX19713: Functional Diagram MAX19713: 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 .