ADC121S051 - Single Channel, 200 to 500 ksps, 12-Bit A/D Converter

ADC121S051

Single Channel, 200 to 500 ksps, 12-Bit A/D Converter from the PowerWise® Family

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Reliability

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

Description
The ADC121S051 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 ADC121S051 is fully specified over a sample rate range of 200 ksps to 500 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 ADC121S051 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 1.7 mW and 8.7 mW, respectively. The power-down feature reduces the power consumption to as low as 2.6 µW using a +5.25V supply.

The ADC121S051 is packaged in 6-lead LLP and SOT-23 packages. Operation over the industrial temperature range of −40°C to +85°C is guaranteed.

Key Specification

DNL

+0.5/-0.25 LSB (typ)

INL

+0.45/-0.40 LSB (typ)

SNR

72.0 dB (typ)

Power Consumption

3.6V Supply

1.7 mW (typ)

5.25V Supply

8.7 mW (typ)

Applications

• Portable Systems

• Remote Data Acquisition

• Instrumentation and Control Systems

ADC121S051 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

ADC081S051▲ For 8 Bits

ADC101S051▲ For 10 Bits

ADC121S021▲ For Speeds From 50Ksps To 200Ksps

ADC121S101▲ For Speeds From 500Ksps To 1Msps

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ADC121S051

Also Recommended

ADC081S051▲	For 8 Bits
ADC101S051▲	For 10 Bits
ADC121S021▲	For Speeds From 50Ksps To 200Ksps
ADC121S101▲	For Speeds From 500Ksps To 1Msps

Typical Application click for larger image

Block Diagram click for larger image

Typical Performance click for larger image

Paramaters / Values	ADC121S051	ADC081S051	ADC101S051	ADC121S021	ADC121S101
Pin and Function Compatible Family	1 ch, SOT-6, 1 ch, LLP-6	1 ch, SOT-6, 1 ch, LLP-6	1 ch, SOT-6, 1 ch, LLP-6	1 ch, SOT-6, 1 ch, LLP-6	1 ch, SOT-6, 1 ch, LLP-6
Resolution	12 bits	8 bits	10 bits	12 bits	12 bits
Input Channels	1	1	1	1	1
Sample Rate Range (sps)	200k to 500k	200k to 500k	200k to 500k	50k to 200k	500k to 1M
Interface Type	SPI / QSPI / Microwire	SPI / QSPI / Microwire	SPI / QSPI / Microwire	SPI / QSPI / Microwire	SPI / QSPI / Microwire
Differential Input	No	No	No	No	No
Power Down, typ. at 3.6V	2.5 uW	2.6 uW	2.6 uW	2.6 uW	2.5 uW
Operating Power, typ at 3.6V, max ksps	0.012 mW	0.010 mW	0.011 mW	0.024 mW	0.007 mW
Operating Power, 3.6V, 1ksps, max. PwrDn	1.7 mW	1.6 mW	2.7 mW	1.5 mW	2.0 mW
PowerWise Rating 1	1.1 pJ/conv	13.4 pJ/conv	5.65 pJ/conv	2.25 pJ/conv	0.6 pJ/conv
INL (LSB)	+0.45; -0.4	+0.06; -0.04	+0.15; -0.09	+0.45; -0.4	+/-0.4
DNL (LSB)	+0.5; -0.25	+0.06; -0.05	+0.15; -0.11	+0.45; -0.25	+0.5; -0.3
ENOB	11.6 bits	7.9 bits	9.9 bits	11.7 bits	11.7 bits
SINAD	72 dB	49.5 dB	61.5 dB	72 dB	72 dB
SNR	72 dB	49.6 dB	61.6 dB	72.3 dB	72.5 dB
Max KSample Rate	500 ksps	500 ksps	500 ksps	200 ksps	1000 ksps
Min Supply Voltage	2.7 Volt	2.7 Volt	2.7 Volt	2.7 Volt	2.7 Volt
Max Supply Voltage	5.25 Volt	5.25 Volt	5.25 Volt	5.25 Volt	5.25 Volt
Reference Source	Supply	Supply	Supply	Supply	Supply
Temperature Min	-40 deg C	-40 deg C	-40 deg C	-40 deg C	-40 deg C
Temperature Max	85 deg C	85 deg C	85 deg C	85 deg C	125 deg C
Power Down	Yes	Yes	Yes	Yes	Yes
Input Sample/Hold	Yes	Yes	Yes	Yes	Yes
Special Features	Undefined	Undefined	Undefined	Undefined	Undefined
Data Converter Type	ADC	ADC	ADC	ADC	ADC
Max Sample Rate	0.5 MSPS	0.5 MSPS	0.5 MSPS	0.2 MSPS	1 MSPS
Automotive	Yes			Yes	Yes
PowerWise	Yes	Yes	Yes	Yes	Yes

Datasheet
Title Size Date Other
Language

ADC121S051 Single Channel, 200 to 500 ksps, 12-Bit A/D Converter 357
Kbytes 31-Jul-08

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

Part Number(s)
(NSID)

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Availability

Current Reported Stock

Budgetary Pricing

Standard Pack Size

ADC121S051CIMF/NOPB

RoHS

SOT-23

Full production
Lead Time: 6 weeks

Distributor	Region	Qty
AVNET-EM	Worldwide	1000
DIGIKEY	Worldwide	1506
FARNELL	Europe and Asia	443
RS COMPONENTS	Worldwide	50

$1.45 each at 1K+ pcs

reel
of
1000

ADC121S051CIMFX/NOPB

RoHS

SOT-23

Full production
Lead Time: 6 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$1.45 each at 1K+ pcs

reel
of
3000

ADC121S051CISD/NOPB

RoHS

LLP

Full production
Lead Time: 12 weeks

Distributor	Region	Qty
DIGIKEY	Worldwide	1839
FARNELL	Europe and Asia	50
RS COMPONENTS	Worldwide	25

$1.45 each at 1K+ pcs

reel
of
1000

ADC121S051CISDX/NOPB

RoHS

LLP

Full production
Lead Time: 6 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$1.45 each at 1K+ pcs

reel
of
4500

Part Number(s) (NSID)	Type	Pins	MSL Rating	Peak Reflow	RoHS	CAD Symbols	Models	Package Marking Format
ADC121S051CIMF/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	X13C XTT
ADC121S051CIMFX/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	X13C XTT
ADC121S051CISD/NOPB	LLP	6	1	260	RoHS	Download	N/A	XTT X4C
ADC121S051CISDX/NOPB	LLP	6	1	260	RoHS	Download	N/A	XTT X4C

Design Tools
Title Size Date

Evaluation Boards & Development Systems

"To evaluate the ADC121S051, order the ADC121S101EVAL evaluation board"

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)

ADC121S051CIMF CMOS7 0 18406 0 0 1089000 4 309006723

ADC121S051CIMFX CMOS7 0 18406 0 0 1089000 4 309006723

ADC121S051CISD CMOS7 0 18406 0 0 1089000 4 309006723

ADC121S051CISDX 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.

[Information as of 21-Nov-2009]