HI5812

Features:

• Conversion Time . . . . . . . . . . . . . . . . . . . . . . . . . . . 20ms
• Throughput Rate . . . . . . . . . . . . . . . . . . . . . . . .50 KSPS
• Built-In Track and Hold
• Guaranteed No Missing Codes Over Temperature
• Single Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . .+5V
• Maximum Power Consumption. . . . . . . . . . . . . . .25mW
• Internal or External Clock




Application

• Remote Low Power Data Acquisition Systems
• Digital Audio
• DSP Modems
• General Purpose DSP Front End
• mP Controlled Measurement System
• Professional Audio Positioner/Fader




Pinout






Specifications

Supply Voltage
V_DD to V_SS . . . . . . . . . . . . . . . . . . . . (V_SS -0.5V) < V_DD < +6.5V
V_AA+ to V_AA-. . . . . . . . . . . . . . . . . . ..(V_SS -0.5V) to (V_SS +6.5V)
V_AA+ to V_DD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3V
Analog and Reference Inputs
VIN, VREF+, VREF-. . . . . . . . . (V_SS -0.3V) < V_INA < (V_DD +0.3V)
Digital I/O Pins . . . . . . . . .. . . (V_SS -0.3V) < VI/O < (V_DD +0.3V)




Description

The HI5812 is a fast, low power, 12-bit, successive approximation analog-to-digital converter. It can operate from a single 3V to 6V supply and typically draws just 1.9mA when operating at 5V. The HI5812 features a built-in track and hold. The conversion time is as low as 15ms with a 5V supply.

The twelve data outputs of HI5812 feature full high speed CMOS threestate bus driver capability, and are latched and held through a full conversion cycle. The output is user selectable: (i.e.) 12- bit, 8-bit (MSBs), and/or 4-bit (LSBs). A data ready flag, and conversion-start inputs complete the digital interface. An internal clock is provided and is available as an output. The clock may also be over-driven by an external source.