General Description
The ADC78H89 is a low-power, seven-channel CMOS
12-bit analog-to-digital converter with a conversion
throughput of 500 KSPS. The converter is based on a
successive-approximation register architecture with an internal
track-and-hold circuit. It can be configured to accept up to
seven input signals on pins AIN1 through AIN7.
The output serial data is straight binary, and is
compatible with several standards, such as SPI™, QSPI™,
MICROW-IRE™, and many common DSP serial interfaces.The ADC78H89 may
be operated with independent analog and digital supplies. The
analog supply (AVDD) can range from +2.7V to +5.25V, and the
digital supply (DVDD) can range from +2.7V to AVDD. Normal power
consumption using a +3V or +5V supply is 1.5 mW and 8.3 mW,
respectively.
The power-down feature reduces the power consumption tojust 0.3 µW
using a +3V supply, or 0.5 µW using a +5V supply. The ADC78H89
is packaged in a 16-lead TSSOP package. Operation over the
industrial temperature range of −40˚C to +85˚C is guaranteed.
Features
1.Seven input channels 2.Variable power
management 3.Independent analog and digital
supplies 4.SPI™/QSPI™/MICROWIRE™/DSP
compatible
5.Packaged in 16-lead TSSOP 6.Key
Specifications 7.Conversion Rate
8.DNL 9.INL
10.Power Consumption — 3V Supply / 5V Supply
Applications
1.Automotive Navigation 2.Portable Systems
3.Medical Instruments
4.Mobile Communications 5.Instrumentation and
Control Systems