Product category:
Analogue and Mixed Signal ICs
News Release from: Analog Devices | Subject: AD970x family
Edited by the Electronicstalk Editorial
Team on 29 July 2005
Transmit-quality convertors use less
power
Analog Devices has developed a low-power generation of its industry-leading TxDAC transmit digital-to-analogue convertors.
Analog Devices has developed a low-power generation of its industry-leading TxDAC transmit digital-to-analogue convertors (DACs) Optimised to the requirements of communications, industrial instrumentation and portable applications that require high-speed performance with the lowest power consumption, Analog Devices' AD970x family reduces power dissipation by up to 70% over previous DAC offerings
This article was originally published on Electronicstalk on 2 Jul 2008 at 8.00am (UK)
Related stories
A/D convertor measures smaller signals faster
Sigma-delta ADC achieves greater than true 16bit noise-free resolution up to 2.4kHz across all input voltages from 40mV to 5V.
SAR convertor claims record speed and accuracy
A/D convertor achieves a new level of 16bit data capture performance, with best-in-class 15bit ENOB and 10Msample/s throughput.
As a transmit-quality convertor, the AD970x family is ideal for applications that need to synthesise broadband signals efficiently - from handheld radios to portable instruments.
In addition, the AD970x family integrates an on-chip voltage reference and Rset and Rload resistors, lowering component count and bill of materials costs.
The devices also feature common mode shift capability, minimising the need for level-shifting circuitry when interfacing with other analogue components.
Further reading
Front-end IC cleans up transmitter designs
The ADF9010 integrates a high-performance transmitter quadrature modulator with an integer-N synthesiser and on-chip low-phase-noise voltage-controlled oscillator.
Demodulator and amp cut receiver complexity
Combined two-chip solution can reduce the active component count by 60% within a radio design, providing considerable board area and bill of material savings.
Microcontrollers integrate 24bit convertors
With on-chip 24bit sigma-delta ADCs, the ADuC706x provides the resolution required by today's high-performance industrial and instrumentation equipment.
This level of integration, the first of its kind for transmit path data convertors, simplifies analogue design and reduces printed circuit board area for smaller portable designs.
"Analog Devices' TxDAC products have become the de facto industry standard for transmit path DACs", said Dave Robertson, Product Line Director of the High-Speed Convertor Group at Analog Devices.
"These new devices are pin compatible with previous generations of the TxDAC family, enabling designers to take advantage of the dramatic decrease in power dissipation without the need for a costly redesign".
"The AD9707 family is the latest of a series of new products from ADI focused on lowering overall system cost without performance compromise".
"It provides the signal path solution while our nanoDAC family provides low power DACs for level setting and control applications".
The AD970x family supports update rates at 175Msample/s - an operating rate four times that of its nearest competitor - and is composed of four products: the flagship AD9707 14bit DAC; and the AD9706, AD9705 and AD9704, which are 12, 10 and 8bit DACs, respectively.
The family features best-in-class spurious-free dynamic range (SFDR) of 86dBc and intermodulation (IMD) of 70 to 50MHz.
All of the devices offer outstanding AC and DC performance and share the same interface, small outline package and pinout, providing an upward or downward component selection path based on performance, resolution, and cost.
The AD9707 has a flexible power supply operating range from 1.7 to 3.6V.
At 3.3V, the AD970x family dissipates 35mW of power and at 1.8V dissipates 12mW.
Its power dissipation can be further reduced by 15mW by lowering the full-scale current output.
Sleep and power down modes reduce dissipation to 5mW for low-power idle periods.
The devices are available in 28-lead TSSOP (thin-shrink small-outline plastic package) and 32-lead LFCSP (lead-frame chip-scale package) packaging.
The devices in the LFCSP packaging include an optional SPI (serial peripheral interface), which provides a higher level of programmability, and an adjustable output common mode feature that enables the TxDAC to easily interface to other components that require common modes greater than 0V.
The AD9707 is also self-calibrating, allowing it to achieve greater accuracy and true 14bit INL (integral nonlinearity) and DNL (differential nonlinearity) performance.
The AD970x family is sampling now with production quantities available in October 2005.
Pricing for the family ranges from $2.75 to $5.75 in 1000-unit quantities, depending on resolution.
The devices are supported by an evaluation board and two development tools: the high-speed DAC Pattern Generator (DPG), which provides digital data for ADI's DAC evaluation boards, and VisualDAC, an integrated development and debugging environment.
• Analog Devices: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
