ADC122S051CIMM/NOPB National Semiconductor, ADC122S051CIMM/NOPB Datasheet

IC ADC 12BIT 2CHAN 500KSPS 8MSOP

ADC122S051CIMM/NOPB

Manufacturer Part Number
ADC122S051CIMM/NOPB
Description
IC ADC 12BIT 2CHAN 500KSPS 8MSOP
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheet

Specifications of ADC122S051CIMM/NOPB

Number Of Bits
12
Sampling Rate (per Second)
500k
Data Interface
DSP, MICROWIRE™, QSPI™, Serial, SPI™
Number Of Converters
1
Power Dissipation (max)
10mW
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Number Of Elements
1
Resolution
12Bit
Architecture
SAR
Sample Rate
500KSPS
Input Polarity
Unipolar
Input Type
Voltage
Rated Input Volt
5.25V
Differential Input
No
Power Supply Requirement
Single
Single Supply Voltage (typ)
3.3/5V
Single Supply Voltage (min)
2.7V
Single Supply Voltage (max)
5.25V
Dual Supply Voltage (typ)
Not RequiredV
Dual Supply Voltage (min)
Not RequiredV
Dual Supply Voltage (max)
Not RequiredV
Differential Linearity Error
-1LSB/1.3LSB
Integral Nonlinearity Error
±1.1LSB
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
8
Package Type
MSOP
Input Signal Type
Single-Ended
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ADC122S051CIMM
ADC122S051CIMMTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ADC122S051CIMM/NOPB
Manufacturer:
TI/德州仪器
Quantity:
20 000
© 2008 National Semiconductor Corporation
ADC122S051
2 Channel, 200 ksps to 500 ksps 12-Bit A/D Converter
General 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 con-
verter is based on a successive-approximation register archi-
tecture 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 us-
ing 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.
Pin-Compatible Alternatives by Resolution and Speed
All devices are fully pin and function compatible.
Connection Diagram
Ordering Information
TRI-STATE® is a trademark of National Semiconductor Corporation
QSPI™ and SPI™ are trademarks of Motorola, Inc.
ADC122S051CIMM
ADC122S051CIMMX
ADC122S051EVAL
Resolution
Order Code
12-bit
10-bit
8-bit
50 to 200 ksps
ADC122S021
ADC102S021
ADC082S021
Temperature Range
−40°C to +85°C
−40°C to +85°C
201064
Specified for Sample Rate Range of:
200 to 500 ksps
Features
Key Specifications
Applications
ADC122S051
ADC102S051
ADC082S051
8-Lead MSOP Package, Tape & Reel
Specified over a range of sample rates.
Two input channels
Variable power management
Single power supply with 2.7V - 5.25V range
DNL
INL
SNR
Power Consumption
— 3V Supply
— 5V Supply
Portable Systems
Remote Data Acquisition
Instrumentation and Control Systems
8-Lead MSOP Package
20106405
Evaluation Board
Description
500 ksps to 1 Msps
ADC122S101
ADC102S101
ADC082S101
+0.7 / −0.4 LSB (typ)
± 0.50 LSB (typ)
August 1, 2008
www.national.com
Top Mark
72.5 dB (typ)
3.0 mW (typ)
10 mW (typ)
X06C
X06C

Related parts for ADC122S051CIMM/NOPB

ADC122S051CIMM/NOPB Summary of contents

Page 1

... ADC082S021 Connection Diagram Ordering Information Order Code ADC122S051CIMM ADC122S051CIMMX ADC122S051EVAL TRI-STATE® trademark of National Semiconductor Corporation QSPI™ and SPI™ are trademarks of Motorola, Inc. © 2008 National Semiconductor Corporation Features ■ Specified over a range of sample rates. ■ Two input channels ■ ...

Page 2

Block Diagram Pin Descriptions and Equivalent Circuits Pin No. Symbol ANALOG I/O IN1 and IN2 5,4 DIGITAL I/O 8 SCLK 7 DOUT 6 DIN 1 CS POWER SUPPLY GND www.national.com Description Analog inputs. These signals can ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Analog Supply Voltage V A Voltage on Any Pin to GND Input Current at Any Pin (Note 3) Package Input Current (Note 3) Power Consumption 25°C A ESD Susceptibility (Note 5) ...

Page 4

Symbol Parameter ANALOG INPUT CHARACTERISTICS V Input Range Leakage Current DCL C Input Capacitance INA DIGITAL INPUT CHARACTERISTICS V Input High Voltage IH V Input Low Voltage IL I Input Current IN C Digital Input Capacitance IND ...

Page 5

ADC122S051 Timing Specifications The following specifications apply for pF, Boldface limits apply for T L Symbol Parameter t Setup Time SCLK High to CS Falling Edge CSU t Hold time SCLK Low to CS Falling Edge ...

Page 6

Timing Diagrams www.national.com ADC122S051 Operational Timing Diagram Timing Test Circuit ADC122S051 Serial Timing Diagram 20106450 SCLK and CS Timing Parameters 6 20106451 20106408 20106406 ...

Page 7

Specification Definitions ACQUISITION TIME is the time required to acquire the input voltage. That is time required for the hold capacitor to charge up to the input voltage. APERTURE DELAY is the time between the fourth falling SCLK ...

Page 8

Typical Performance Characteristics 8 MHz 40.2 kHz unless otherwise stated. IN DNL - V = 3.0V A DNL - V = 5.0V A DNL vs. Supply www.national.com T = +25° 200 ksps to 500 ksps, f ...

Page 9

DNL vs. Clock Frequency 20106424 DNL vs. Clock Duty Cycle 20106426 DNL vs. Temperature 20106428 INL vs. Clock Frequency INL vs. Clock Duty Cycle INL vs. Temperature 9 20106425 20106427 20106429 www.national.com ...

Page 10

SNR vs. Supply SNR vs. Clock Frequency SNR vs. Clock Duty Cycle www.national.com THD vs. Supply 20106430 THD vs. Clock Frequency 20106431 THD vs. Clock Duty Cycle 20106432 10 20106435 20106436 20106437 ...

Page 11

SNR vs. Input Frequency 20106433 SNR vs. Temperature 20106434 SFDR vs. Supply 20106440 THD vs. Input Frequency THD vs. Temperature SINAD vs. Supply 11 20106438 20106439 20106445 www.national.com ...

Page 12

SFDR vs. Clock Frequency SFDR vs. Clock Duty Cycle SFDR vs. Input Frequency www.national.com SINAD vs. Clock Frequency 20106441 SINAD vs. Clock Duty Cycle 20106442 SINAD vs. Input Frequency 20106443 12 20106446 20106447 20106448 ...

Page 13

SFDR vs. Temperature 20106444 ENOB vs. Supply 20106452 ENOB vs. Clock Duty Cycle 20106454 SINAD vs. Temperature ENOB vs. Clock Frequency ENOB vs. Input Frequency 13 20106449 20106453 20106455 www.national.com ...

Page 14

ENOB vs. Temperature Spectral Response - 5V, 200 ksps Spectral Response - 5V, 500 ksps www.national.com Spectral Response - 3V, 200 ksps 20106456 Spectral Response - 3V, 500 ksps 20106460 Power Consumption vs. Throughput 20106465 14 20106459 20106464 20106461 ...

Page 15

Applications Information 1.0 ADC122S051 OPERATION The ADC122S051 is a successive-approximation analog-to- digital converter designed around a charge-redistribution dig- ital-to-analog converter. Simplified schematics of the AD- C122S051 in both track and hold modes are shown in Figures 1, 2, respectively. In ...

Page 16

See Tables 1, 2 and Table and SCLK go low within the times defined the rising edge of SCLK that begins ...

Page 17

ADC122S051 TRANSFER FUNCTION The output format of the ADC122S051 is straight binary. Code transitions occur midway between successive integer LSB values. The LSB width for the ADC122S051 is V 4.0 TYPICAL APPLICATION CIRCUIT A typical application of the ADC122S051 ...

Page 18

ANALOG INPUTS An equivalent circuit for one of the ADC122S051's input chan- nels is shown in Figure 5. Diodes D1 and D2 provide ESD protection for the analog inputs time should any input go beyond (V + ...

Page 19

Physical Dimensions inches (millimeters) unless otherwise noted Order Number ADC122S051CIMM, ADC122S051CIMMX 8-Lead MSOP NS Package Number P0MUA08A 19 www.national.com ...

Page 20

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock Conditioners www.national.com/timing Data Converters www.national.com/adc Displays www.national.com/displays Ethernet www.national.com/ethernet Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www ...

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