ADC121S021 - Single Channel, 50 to 200 ksps, 12-Bit A/D Converter

ADC121S021 - Single Channel, 50 to 200 ksps, 12-Bit A/D Converter from the PowerWise® Family

Datasheet	Packaging	Samples & Pricing	Reliability	Design Tools	Knowledge Base

Features

•	Specified over a range of sample rates.
•	6-lead LLP and SOT-23 packages
•	Variable power management
•	Single power supply with 2.7V - 5.25V range
•	SPI™/QSPI™/MICROWIRE/DSP compatible

Key Specification

DNL	+0.45 / -0.25 LSB (typ)
INL	+0.45 / -0.4 LSB (typ)
SNR	72.3 dB (typ)
Power Consumption

3.6V Supply	1.5 mW (typ)
5.25V Supply	7.9 mW (typ)

General Description

The ADC121S021 is a low-power, single 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 ADC121S021 is fully specified over a sample rate range of 50 ksps to 200 ksps. More...

Applications

•	Portable Systems
•	Remote Data Acquisition
•	Instrumentation and Control Systems

Typical Application

click for larger image

Parameters Values

Pin and Function Compatible Family 1 ch, SOT-6, 1 ch, LLP-6

Resolution 12 bits

Input Channels 1

Sample Rate Range (sps) 50k to 200k

Interface Type SPI / QSPI / Microwire

Differential Input No

Power Down, typ. at 3.6V 2.6 uW

Operating Power, typ at 3.6V, max ksps 0.024 mW

Operating Power, 3.6V, 1ksps, max. PwrDn 1.5 mW

PowerWise Rating 1 2.25 pJ/conv

INL (LSB) +0.45; -0.4

DNL (LSB) +0.45; -0.25

ENOB 11.7 bits

SINAD 72 dB

SNR 72.3 dB

Max KSample Rate 200 ksps

Min Supply Voltage 2.7 Volt

Max Supply Voltage 5.25 Volt

Reference Source Supply

Temperature Min -40 deg C

Temperature Max 85 deg C

Power Down Yes

Input Sample/Hold Yes

Special Features Undefined

Data Converter Type ADC

Max Sample Rate 0.2 MSPS

Automotive Yes

PowerWise Yes

Typical Performance

click for larger image

WEBENCH Live Simulation!

ADC121S021 Webench® Custom
Design/Analyze/Build It

ADC Parameters

ADC and Op Amp Supply voltage:

5 V

3.3 V

Sample Rate

Sample Rate per channel

ksps

Operating Conditions

Min. Ambient Temperature

degC

Nominal Ambient Temperature

degC

Max. Ambient Temperature

degC

Also Recommended

ADC081S021▲	For 8 Bits
ADC101S021▲	For 10 Bits
ADC121S051▲	For Speeds From 200Ksps To 500Ksps
ADC121S101▲	For Speeds From 500Ksps To 1Msps.
ADC121S625▲	Differential Input, External Reference, MSOP Package

Additional Resources

Block Diagram

click for larger image

Datasheet

RoHS Compliance Information	Size in Kbytes	Date
ADC121S021 Single Channel, 50 to 200 ksps, 12-Bit A/D Converter	352 Kbytes	31-Jul-08	Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part Number

Package

Factory Lead Time

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking
Format

Type

Pins

Spec.

MSL
Rating

Peak
Reflow

RoHS
Report

CAD
Symbols

Qty

Qty

$US each

ADC121S021CIMF

6

NOPB
STD

1
1

260
260

Full production

N/A

Samples

Buy Now

1K+

$1.16

reel
of
1000

6 weeks

10000

ADC121S021CIMFX

6

NOPB

1

260

Full production

N/A

Buy Now

1K+

$1.16

reel
of
3000

6 weeks

10000

ADC121S021CISD

6

NOPB

1

260

Full production

N/A

Samples

Buy Now

1K+

$1.16

reel
of
1000

6 weeks

7500

ADC121S021CISDX

6

NOPB

1

260

Full production

N/A

Buy Now

1K+

$1.16

reel
of
4500

6 weeks

10000

General Description

The ADC121S021 is a low-power, single 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 ADC121S021 is fully specified over a sample rate range of 50 ksps to 200 ksps. The converter is based upon a successive-approximation register architecture with an internal track-and-hold circuit.

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 ADC121S021 operates with a single supply that can range from +2.7V to +5.25V. Normal power consumption using a +3.6V or +5.25V supply is 1.5 mW and 7.9 mW, respectively. The power-down feature reduces the power consumption to as low as 2.6 µW using a +5.25V supply.

The ADC121S021 is packaged in 6-lead LLP and SOT-23 packages. Operation over the industrial temperature range of −40°C to +85°C is guaranteed.

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
ADC121S021CIMF	CMOS7	0	18406	0	0	1089000	4	309006723
ADC121S021CIMFX	CMOS7	0	18406	0	0	1089000	4	309006723
ADC121S021CISD	CMOS7	0	18406	0	0	1089000	4	309006723
ADC121S021CISDX	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.

For more information on Reliability Metrics, please click here.

Design Tools

Title	Size in Kbytes	Date
Evaluation Boards & Development Systems			View
"To evaluate the ADC121S021, order the ADC121S101EVAL evaluation board"			View

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 7-Nov-2009]