ADC081S051EVAL National Semiconductor, ADC081S051EVAL Datasheet

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ADC081S051EVAL

Manufacturer Part Number
ADC081S051EVAL
Description
BOARD EVALUATION FOR ADC081S051
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheet

Specifications of ADC081S051EVAL

Number Of Adc's
1
Number Of Bits
8
Sampling Rate (per Second)
500k
Data Interface
Serial
Inputs Per Adc
1 Single Ended
Input Range
0 ~ 5.25 V
Power (typ) @ Conditions
8.5mW @ 500kSPS
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Utilized Ic / Part
ADC081S051
Lead Free Status / RoHS Status
Not applicable / Not applicable
© 2010 National Semiconductor Corporation
Single Channel, 200 to 500 ksps, 8-Bit A/D Converter
General Description
The ADC081S051 is a low-power, single channel CMOS 8-
bit analog-to-digital converter with a high-speed serial inter-
face. Unlike the conventional practice of specifying perfor-
mance at a single sample rate only, the ADC081S051 is fully
specified over a sample rate range of 200 ksps to 500 ksps.
The converter is based on a successive-approximation reg-
ister 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 ADC081S051 operates with a single supply that can
range from +2.7V to +5.25V. Normal power consumption us-
ing a +3.6V or +5.25V supply is 1.6 mW and 8.5 mW, respec-
tively. The power-down feature reduces the power consump-
tion to as low as 2.6 µW using a +5.25V supply.
The ADC081S051 is packaged in 6-lead LLP and SOT-23
packages. 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
ADC081S051CISD
ADC081S051CISDX
ADC081S051CIMF
ADC081S051CIMFX
ADC081S051EVAL
®
is a registered trademark of National Semiconductor Corporation.
Resolution
Order Code
12-bit
10-bit
8-bit
50 to 200 ksps
ADC121S021
ADC101S021
ADC081S021
Temperature Range
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
201455
ADC081S051
Specified for Sample Rate Range of:
200 to 500 ksps
Features
Key Specifications
Applications
ADC121S051
ADC101S051
ADC081S051
6-Lead SOT-23 Package, Tape & Reel
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
DNL
INL
SNR
Power Consumption
— 3.6V Supply
— 5.25V Supply
Portable Systems
Remote Data Acquisition
Instrumentation and Control Systems
6-Lead LLP Package, Tape & Reel
SOT-23 Evaluation Board
6-Lead SOT-23 Package
6-Lead LLP Package
Description
20145505
500 ksps to 1 Msps
ADC121S101
ADC081S101
ADC081S101
+0.06 / -0.045 LSB (typ)
+0.06 / -0.05 LSB (typ)
January 13, 2010
www.national.com
Top Mark
49.6 dB (typ)
1.6 mW (typ)
8.5 mW (typ)
X15C
X15C
X6C
X6C

Related parts for ADC081S051EVAL

ADC081S051EVAL Summary of contents

Page 1

... ADC101S021 8-bit ADC081S021 Connection Diagram Ordering Information Order Code ADC081S051CISD ADC081S051CISDX ADC081S051CIMF ADC081S051CIMFX ADC081S051EVAL TRI-STATE ® registered trademark of National Semiconductor Corporation. © 2010 National Semiconductor Corporation ADC081S051 Features ■ Specified over a range of sample rates. ■ 6-lead LLP and SOT-23 packages ■ ...

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Block Diagram Pin Descriptions and Equivalent Circuits Pin No. Symbol ANALOG I/O V Analog input. This signal can range from DIGITAL I/O 4 SCLK Digital clock input. This clock directly controls the conversion and readout ...

Page 3

... Absolute Maximum Ratings 2) 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 Analog Pin to GND Voltage on Any Digital Pin to GND Input Current at Any Pin (Note 3) Package Input Current ...

Page 4

Symbol Parameter Intermodulation Distortion, Second Order Terms IMD Intermodulation Distortion, Third Order Terms FPBW -3 dB Full Power Bandwidth ANALOG INPUT CHARACTERISTICS V Input Range Leakage Current DCL C Input Capacitance INA DIGITAL INPUT CHARACTERISTICS V Input ...

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Symbol Parameter DC SCLK Duty Cycle t Minimum Time Required for Acquisition ACQ t (Note 10) QUIET t Aperture Delay AD t Aperture Jitter AJ ADC081S051 Timing Specifications The following specifications apply for 200 ksps to 500 ...

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Timing Diagrams www.national.com FIGURE 1. Timing Test Circuit FIGURE 2. ADC081S051 Serial Timing Diagram 6 20145508 20145506 ...

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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. Acquisition time is measured backwards from the falling edge of ...

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Typical Performance Characteristics MHz to 10 MHz 100 kHz unless otherwise stated. SCLK IN DNL MHz SCLK DNL MHz SCLK DNL vs. Clock Frequency www.national.com T = +25°C, f ...

Page 9

Total Unadjusted Error vs. Clock Frequency SINAD vs. Clock Frequency SFDR vs.Clock Frequency SNR vs. Clock Frequency 20145567 THD vs. Clock Frequency 20145564 Spectral Response, V 20145572 9 20145563 20145568 = 5V MHz A SCLK 20145569 www.national.com ...

Page 10

Spectral Response 5V Applications Information 1.0 ADC081S051 OPERATION The ADC081S051 is a successive-approximation analog-to- digital converter designed around a charge-redistribution dig- ital-to-analog converter core. Simplified schematics of the ADC081S051 in both track and hold modes are ...

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USING THE ADC081S051 The serial interface timing diagram for the ADC is shown in Figure chip select, which initiates conversions on the ADC and frames the serial data transfers. SCLK (serial clock) controls both the conversion ...

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... TYPICAL APPLICATION CIRCUIT A typical application of the ADC is shown in is provided in this example by the National Semiconductor LP2950 low-dropout voltage regulator, available in a variety of fixed and adjustable output voltages. The power supply pin is bypassed with a capacitor network located close to the ADC. Because the reference for the ADC is the supply volt- age, any noise on the supply will degrade device noise per- 5 ...

Page 13

Shutdown Mode Shutdown mode is appropriate for applications that either do not sample continuously acceptable to trade through- put for power consumption. When the ADC is in shutdown mode, all of the analog circuitry is turned ...

Page 14

To keep noise out of the power supply, keep the output load capacitance as small as practical good practice to use a 100 Ω series resistor at the ADC output, located as close to www.national.com the ADC output ...

Page 15

Physical Dimensions inches (millimeters) unless otherwise noted Order Number ADC081S051CISD or ADC081S051CISDX Order Number ADC081S051CIMF, ADC081S051CIMFX 6-Lead LLP NS Package Number SDB06A 6-Lead SOT-23 NS Package Number MF06A 15 www.national.com ...

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

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