1FEATURES

23· Maximum Sample Rate: 70MSPS

· 12-Bit Resolution

· No Missing Codes

· Total Power Dissipation:

Internal Reference: 1W

External Reference: 937mW

· CMOS Technology

· Simultaneous Sample-and-Hold

· 71dBFS SNR at 5MHz IF

· 3.3V Digital/Analog Supply

· Serialized LVDS Outputs

· Integrated Frame and Bit Patterns

· Option to Double LVDS Clock Output Currents

· Four Current Modes for LVDS

· Pin- and Format-Compatible Family

· TQFP-80 PowerPAD? Package

APPLICATIONS

· Portable Ultrasound Systems

· Test Equipment

· Military

DESCRIPTION

The ADS5273 is a high-performance, CMOS,

70MSPS, 8-channel analog-to-digital converter

(ADC). An internal reference is provided, simplifying

system design requirements. Low power consumption

allows for the highest of system integration densities.

Serial LVDS (low-voltage differential signaling)

outputs reduce the number of interface lines and

package size.

An integrated phase lock loop (PLL) multiplies the

incoming ADC sampling clock by a factor of 12. This

high-frequency LVDS clock is used in the data

serialization and transmission process. The word

output of each internal ADC is serialized and

transmitted either MSB or LSB first. In addition to the

eight data outputs, a bit clock and a word clock are

also transmitted. The bit clock is at 6x the speed of the sampling clock, whereas the word clock is at the

same speed of the sampling clock.

The ADS5273 provides an internal reference, or can

optionally be driven with an external reference. Best

performance is achieved through the internal

reference mode.

The device is available in a PowerPAD TQFP-80

package and is specified over a –40°C to +85°C operating range.