ADS5423

Features:

`14 Bit Resolution
`80 MSPS Maximum Sample Rate
`SNR = 74 dBc at 80 MSPS and 50 MHz IF
`SFDR = 94 dBc at 80 MSPS and 50 MHz IF
`2.2 Vpp Differential Input Range
`5 V Supply Operation
`3.3 V CMOS Compatible Outputs
`1.85 W Total Power Dissipation
`2s Complement Output Format
`On-Chip Input Analog Buffer, Track and Hold, and Reference Circuit
`52 Pin HTQFP Package With Exposed Heatsink
`Pin Compatible to the AD6644/45
`Industrial Temperature Range = -40 to 85


Pinout




Specifications

		ADS5423	UNIT
Supply voltage	AVDD to GND	6	V
	DRVDD to GND	5	V
Analog input to GND		−0.3 to AVDD + 0.3	V
Clock input to GND		−0.3 to AVDD + 0.3	V
CLK to CLK		±2.5	V
Digital data output to GND		−0.3 to DRVDD + 0.3	V
Operating temperature range		−40 to 85
Maximum junction temperature		150
Storage temperature range		−65 to 150

Description

The ADS5423 is a 14 bit 80 MSPS analog-to-digital converter (ADC) that operates from a 5 V supply, while providing 3.3 V CMOS compatible digital outputs. It  input buffer isolates the internal switching of the on-chip Track and Hold (T&H) from disturbing the signal source. An internal reference generator is also provided to further simplify the system design. The ADS5423 has outstanding low noise and linearity, over input frequency. With only a 2.2 VPP input range, simplifies the design of multicarrier applications, where the carriers are selected on the digital domain.

The ADS5423 is available in a 52 pin HTQFP with heatsink package and is pin compatible to the AD6645. It is built on state of the art Texas Instruments complementary bipolar process (BiCom3) and is specified over full industrial temperature range (-40 to 85).