CA3310 General Description
The Intersil CA3310 is a fast, low power, 10-bit successive approximation analog-to-digital converter, with microprocessorcompatible outputs. It uses only a single 3V to 6V supply and typically draws just 3mA when operating at 5V. It can accept full rail-to-rail input signals, and features a built-in track and hold.
The track and hold will follow high bandwidth input signals, as it has only a 100ns (typical) input time constant. The ten data outputs feature full high-speed CMOS threestate bus driver capability, and are latched and held through a full conversion cycle. Separate 8 MSB and 2 LSB enables, a data ready flag, and conversion start and ready reset inputs complete the microprocessor interface.
An internal, adjustable clock is provided and is available as an output. The clock may also be driven from an external source.
CA3310 Maximum Ratings
Digital Supply Voltage VDD. . . . . . . . . . . . . .VSS -0.5V to VSS +7V
Analog Supply Voltage (VAA+) . . . . . . . . . . . . . . . . . .VDD ±0.5V
Any Other Terminal . . . . . . . . . . . . . . . . .VSS -0.5V to VDD + 0.5V
DC Input Current or Output (Protection Diode)
Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20mA
DC Output Drain Current, per Output . . . . . . . . . . . . . . . ±35mA
Total DC Supply or Ground Current . . . . . . . . . . . . . . . . . ±70mA
CA3310 Features
• CMOS Low Power (Typ). . . . . . . . . . . . . . . . . . . . .15mW
• Single Supply Voltage . . . . . . . . . . . . . . . . . . . . 3V to 6V
• Conversion Time . . . . . . . . . . . . . . . . . . . . . . . . . . . 13s
• Built-In Track and Hold
• Rail-to-Rail Input Range
• Latched Three-state Output Drivers
• Microprocessor-Compatible
CA3310 Typical Application
• Fast, No-Droop, Sample and Hold
• Voice Grade Digital Audio
• DSP Modems
• Remote Low Power Data Acquisition Systems
• P Controlled Systems
CA3310 Connection Diagram
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