Features • Eight input channels • Variable power management • Independent analog and digital supplies • SPI™/QSPI™/MICROWIRE™/DSP compatible • Packaged in 16-lead TSSOP Description The ADC78H90 is a low-power, eight-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 eight input signals at inputs AIN1 through AIN8. The output serial data is straight binary, and is compatible with several standards, such as SPI™, QSPI™, MICROWIRE™, and many common DSP serial interfaces. The ADC78H90 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 to just 0.3 µW using a +3V supply, or 0.5 µW using a +5V supply. The ADC78H90 is packaged in a 16-lead TSSOP package. Operation over the industrial temperature range of -40°C to +85°C is guaranteed. Key Specification Conversion Rate 500 kSPS DNL ± 1 LSB (max) INL ± 1 LSB (max) Power Consumption   3V Supply 1.5 mW (typ) 5V Supply 8.3 mW (typ) Applications • Automotive Navigation • Portable Systems • Medical Instruments • Mobile Communications • Instrumentation and Control Systems

ADC78H90 Webench® Custom Design/Analyze/Build It ADC Parameters ADC and Op Amp Supply voltage: 5 V 3.3 V help Sample Rate Sample Rate per channel ksps help Operating Conditions Min. Ambient Temperature degC help Nominal Ambient Temperature degC help Max. Ambient Temperature degC help Also Recommended ADC088S052▲ For 8 Bits ADC108S052▲ For 10 Bits ADC128S022▲ For Speeds From 50Ksps To 200Ksps ADC128S052▲ For Speeds From 200Ksps To 500Ksps ADC128S102▲ For Speeds From 500Ksps To 1Msps ADC78H89▲ For 7 Channel MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

Typical Application click for larger image	Block Diagram click for larger image
Typical Performance click for larger image

Datasheet

Title		Size	Date	Other Language
	ADC78H90 8-Channel, 500 kSPS, 12-Bit A/D Converter	828 Kbytes	8-Mar-05	日本語

Featured Application Notes

Title		Size	Date	Other Language
	AN-1950: Application Note 1950 Silently Powering Low Noise Applications	3415 Kbytes	28-Jul-09

More Application Notes

Title		Size	Date	Other Language
	AN-1261: Application Note 1261 Power Supply Effects on Noise Performance	78 Kbytes	16-Mar-07	中文

Design Tools

Title	Size	Date
Evaluation Boards & Development Systems
"To evaluate the ADC78H90, order the ADC128S102EVAL evaluation board"

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
ADC78H90CIMT	CMOS7	0	18406	0	0	1089000	4	309006723
ADC78H90CIMTX	CMOS7	0	18406	0	0	1089000	4	309006723

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

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