Features • Variable power management • Packaged in 6-lead, SOT-23 and LLP • Power supply used as reference • Single +2.7V to +5.25V supply operation • SPI™/QSPI™/MICROWIRE™/DSP compatible Description The ADCS7476, ADCS7477, and ADCS7478 are low power, monolithic CMOS 12-, 10- and 8-bit analog-to-digital converters that operate at 1 MSPS. The ADCS7476/77/78 are drop-in replacements for Analog Devices' AD7476/77/78. Each device is based on a successive approximation register architecture with internal track-and-hold. The serial interface is compatible with several standards, such as SPI™, QSPI™, MICROWIRE™, and many common DSP serial interfaces. The ADCS7476/77/78 uses the supply voltage as a reference, enabling the devices to operate with a full-scale input range of 0 to VDD. The conversion rate is determined from the serial clock (SCLK) speed. These converters offer a shutdown mode, which can be used to trade throughput for power consumption. The ADCS7476/77/78 is operated with a single supply that can range from +2.7V to +5.25V. Normal power consumption during continuous conversion, using a +3V or +5V supply, is 2 mW or 10 mW respectively. The power down feature, which is enabled by a chip select ( ^CS) pin, reduces the power consumption to under 5 µW using a +5V supply. All three converters are available in a 6-lead, SOT-23 package and in a 6-lead LLP, both of which provide an extremely small footprint for applications where space is a critical consideration. These products are designed for operation over the automotive/extended industrial temperature range of −40°C to +125°C. Key Specification Resolution with no Missing Codes 12/10/8 bits Conversion Rate 1 MSPS DNL +0.5, -0.3 LSB (typ) INL ± 0.4 LSB (typ) Power Consumption 3V Supply 2 mW (typ) 5V Supply 10 mW (typ) Applications • Automotive Navigation • FA/ATM Equipment • Portable Systems • Medical Instruments • Mobile Communications • Instrumentation and Control Systems

ADCS7478 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 ADC081S021▲ For Speeds From 50Ksps To 200Ksps ADC081S051▲ For Speeds From 200Ksps To 500Ksps ADC081S101▲ For Speeds From 500Ksps To 1Msps, Lower Power ADC101S101▲ For 10 Bits ADC121S101▲ For 12 Bits 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
	ADCS7476 ADCS7477 ADCS7478 1MSPS, 12-/10-/8-Bit A/D Converters in SOT-23 & LLP	527 Kbytes	15-Oct-09	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 ADCS7478, order the ADC081S101EVAL evaluation board"

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
ADCS7478AIMF	CMOS7	0	18406	0	0	1089000	4	309006723
ADCS7478AIMFX	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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