Features • Specified over a range of sample rates. • Two input channels • Variable power management • Single power supply with 2.7V - 5.25V range Description The ADC122S051 is a low-power, two-channel CMOS 12-bit analog-to-digital converter with a high-speed serial interface. Unlike the conventional practice of specifying performance at a single sample rate only, the ADC122S051 is fully specified over a sample rate range of 200 ksps to 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 one or two input signals at inputs IN1 and IN2. 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 ADC122S051 operates with a single supply that can range from +2.7V to +5.25V. Normal power consumption using a +3V or +5V supply is 3.0 mW and 10 mW, respectively. The power-down feature reduces the power consumption to just 0.14 µW using a +3V supply, or 0.32 µW using a +5V supply. The ADC122S051 is packaged in an 8-lead MSOP package. Operation over the industrial temperature range of −40°C to +85°C is guaranteed. Key Specification DNL +0.7 / −0.4 LSB (typ) INL ± 0.50 LSB (typ) SNR 72.5 dB (typ) Power Consumption 3V Supply 3.0 mW (typ) 5V Supply 10 mW (typ) Applications • Portable Systems • Remote Data Acquisition • Instrumentation and Control Systems

ADC122S051 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 ADC082S051▲ For 8 Bits ADC102S051▲ For 10 Bits ADC122S021▲ For Speeds From 50Ksps To 200Ksps ADC122S101▲ For Speeds From 500Ksps To 1Msps 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
	ADC122S051 2 Channel, 200 ksps to 500 ksps 12-Bit A/D Converter	438 Kbytes	1-Aug-08	日本語

Featured 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

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 ADC122S051, order the ADC122S101EVAL evaluation board"

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
ADC122S051CIMM	CMOS7	0	18406	0	0	1089000	4	309006723
ADC122S051CIMMX	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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