ADC121S101EVAL National Semiconductor, ADC121S101EVAL Datasheet

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ADC121S101EVAL

Manufacturer Part Number
ADC121S101EVAL
Description
BOARD EVALUATION FOR ADC121S101
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheet

Specifications of ADC121S101EVAL

Number Of Adc's
1
Number Of Bits
12
Sampling Rate (per Second)
1M
Data Interface
Serial
Inputs Per Adc
1 Single Ended
Input Range
0 ~ 5.25 V
Power (typ) @ Conditions
2mW @ 1MSPS
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 125°C
Utilized Ic / Part
ADC121S101
Lead Free Status / RoHS Status
Not applicable / Not applicable
© 2010 National Semiconductor Corporation
Single Channel, 0.5 to 1 Msps, 12-Bit A/D Converter
General Description
The ADC121S101 is a low-power, single channel CMOS 12-
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 ADC121S101 is fully
specified over a sample rate range of 500 ksps to 1 Msps. 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 ADC121S101 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 2.0 mW and 10 mW, respectively.
The power-down feature reduces the power consumption to
as low as 2.6 µW using a +5V supply.
The ADC121S101 is packaged in 6-lead LLP and SOT-23
packages. Operation over the industrial temperature range of
−40°C to +125 °C is guaranteed.
Pin-Compatible Alternatives by Resolution and Speed
All devices are fully pin and function compatible.
Connection Diagram
Ordering Information
TRI-STATE
ADC121S101CISD
ADC121S101CISDX
ADC121S101CIMF
ADC121S101CIMF
ADC121S101EVAL
®
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 +125 °C
−40°C to +125 °C
−40°C to +125 °C
−40°C to +125 °C
201450
ADC121S101
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
— 3V Supply
— 5V Supply
Portable Systems
Remote Data Acquisition
Instrumentation and Control Systems
6-Lead LLP Package, Tape & Reel
6-Lead SOT-23 Package
6-Lead LLP Package
Evaluation Board
20145005
Description
500 ksps to 1 Msps
ADC121S101
ADC101S101
ADC081S101
+0.5 / −0.3 LSB (typ)
January 14, 2010
±0.40 LSB (typ)
www.national.com
Top Mark
72.5 dB (typ)
2.0 mW (typ)
10 mW (typ)
X01C
X01C
X1C
X1C

Related parts for ADC121S101EVAL

ADC121S101EVAL Summary of contents

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... ADC101S021 8-bit ADC081S021 Connection Diagram Ordering Information Order Code ADC121S101CISD ADC121S101CISDX ADC121S101CIMF ADC121S101CIMF ADC121S101EVAL TRI-STATE ® registered trademark of National Semiconductor Corporation. © 2010 National Semiconductor Corporation ADC121S101 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 ...

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

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Symbol Parameter THD Total Harmonic Distortion SFDR Spurious-Free Dynamic Range ENOB Effective Number of Bits Intermodulation Distortion, Second Order Terms IMD Intermodulation Distortion, Third Order Terms FPBW -3 dB Full Power Bandwidth ANALOG INPUT CHARACTERISTICS V Input Range IN I ...

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Symbol Parameter Power Consumption, Normal Mode (Operational, CS low Power Consumption, Shutdown (CS high) AC ELECTRICAL CHARACTERISTICS f Clock Frequency SCLK f Sample Rate S DC SCLK Duty Cycle Minimum Time Required for t ACQ Acquisition t (Note ...

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Note 7: Tested limits are guaranteed to National's AOQL (Average Outgoing Quality Level). Note 8: This is the frequency range over which the electrical performance is guaranteed. The device is functional over a wider range which is specified under Operating ...

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Timing Diagrams FIGURE 1. Timing Test Circuit FIGURE 2. ADC121S101 Serial Timing Diagram 7 20145008 20145006 www.national.com ...

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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 20 MHz 100 kHz unless otherwise stated. SCLK IN DNL MHz SCLK DNL MHz SCLK DNL vs. Clock Frequency T = +25° ...

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SNR vs. Clock Frequency SFDR vs. Clock Frequency Spectral Response MHz SCLK www.national.com 20145063 20145067 = 5.25V A 20145069 10 SINAD vs. Clock Frequency 20145064 THD vs. Clock Frequency 20145068 Spectral Response 5.25V A ...

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Power Consumption vs. Throughput MHz SCLK 20145055 11 www.national.com ...

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Applications Information 1.0 ADC121S101 OPERATION The ADC121S101 is a successive-approximation analog-to- digital converter designed around a charge-redistribution dig- ital-to-analog converter core. Simplified schematics of the ADC121S101 in both track and hold modes are shown in Figure 3 and Figure 4, ...

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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 ...

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ANALOG INPUTS An equivalent circuit for the ADC's input is shown in 7. Diodes D1 and D2 provide ESD protection for the analog inputs time should the analog input go beyond (V 300 mV) or (GND − ...

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To exit shutdown mode, bring CS back low. Upon bringing CS low, the ADC will begin powering up (power-up time is specified in the Timing Specifications table). This power-up delay results in the first conversion result being unusable. The second ...

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Physical Dimensions Order Number ADC121S101CISD or ADC121S101CISDX www.national.com inches (millimeters) unless otherwise noted 6-Lead LLP NS Package Number SDB06A 6-Lead SOT-23 Order Number ADC121S101CIMF, ADC121S101CIMFX NS Package Number MF06A 16 ...

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Notes 17 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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