MAX19713 10-Bit, 45Msps, Full-Duplex, Analog Front-End

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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 1.024V_P-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 f_OUT = 2.2MHz and f_CLK = 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.

Key Features

Applications/Uses

Dual 10-Bit, 45Msps Rx ADC and Dual 10-Bit, 45Msps Tx DAC
Ultra-Low Power
- 91.8mW at f_CLK = 45MHz, FD Mode
- 79.2mW at f_CLK = 45MHz, Slow Rx Mode
- 49.5mW at f_CLK = 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 f_IN = 5.5MHz (Rx ADC)
- SFDR = 70.3dBc at f_OUT = 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 f_IN = 5.5MHz
Multiplexed Parallel Digital I/O
Serial-Interface Control
Versatile Power-Control Circuits
- Shutdown, Standby, Idle, Tx/Rx Disable
Miniature 56-Pin Thin QFN Package (7mm x 7mm x 0.8mm)

	801.11a/b/g WLAN
	Portable Communication Equipment
	VoIP Terminals
	WiMAX CPEs

Key Specifications: Fast CODECs / Analog Front-End (AFE)

Part Number

ADC Input Channels

ADC Conv. Speed (Msps)

SNR@f_in (dB)

DAC Resolution (Bits)

DAC Output Channels

DAC Speed (Msps)

SFDR @ f_OUT (dBc)

THD@f_OUT (dBc)

Noise Spectral Density @ f_out (dBFS/Hz)

Data Bus Interface

Reference Voltage (V)

EV-Kit

Supply Voltage (V)

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

MAX19713

54.1 @ 5.5MHz

70.3 @ 2.2MHz

-68.1 @ 2.2MHz

-129 @ 2.2MHz

Multiplexed
Parallel

Int/Ext

Yes

1.8
2.7 to 3.3

Yes

THIN QFN/56

-40 to +85

$9.85 @ 1k

See All Fast CODECs / Analog Front-End (AFE) (15)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.