1FEATURES
2• Internal Sample-and-Hold
• Single +5V Operation
• Low Power Standby Mode
• Ensured No Missing Codes
• TTL/CMOS or 3V Logic Input/Output
Compatible

APPLICATIONS
• Digital Video
• Communications
• Document Scanners
• Medical Imaging
• Electro-Optics
• Plain Paper Copiers
• CCD Imaging

KEY SPECIFICATIONS
• Resolution 10 Bits
• Conversion Rate 20 Msps
• ENOB@ 10MHz Input 9.2 Bits (typ)
• DNL 0.35 LSB (typ)
• Conversion Latency 2 Clock Cycles
• PSRR 56 dB
• Power Consumption 98 mW (typ)
• Low Power Standby Mode <4 mW (typ)

DESCRIPTION
The ADC10321 is a low power, high performance
CMOS analog-to-digital converter that digitizes
signals to 10 bits resolution at sampling rates up to
25Msps while consuming a typical 98mW from a
single 5V supply. Reference force and sense pins
allow the user to connect an external reference buffer amplifier to ensure optimal accuracy. No missing
codes is ensured over the full operating temperature
range. The unique two stage architecture achieves
9.2 Effective Bits with a 10MHz input signal and a
20MHz clock frequency. Output formatting is straight
binary coding.
To ease interfacing to 3V systems, the digital I/O
power pins of the ADC10321 can be tied to a 3V
power source, making the outputs 3V compatible.
When not converting, power consumption can be
reduced by pulling the PD (Power Down) pin high,
placing the converter into a low power standby state,
where it typically consumes less than 4mW. The
ADC10321's speed, resolution and single supply
operation makes it well suited for a variety of
applications in video, imaging, communications,
multimedia and high speed data acquisition. Low power, single supply operation ideally suit the
ADC10321 for high speed portable applications, and
its speed and resolution are ideal for charge coupled
device (CCD) input systems.
The ADC10321 comes in a space saving 32-pin
TQFP and operates over the industrial (−40°C ≤ TA ≤ +85°C) temperature range.