ADC128S022CIMT/NOPB National Semiconductor, ADC128S022CIMT/NOPB Datasheet

ADC 12BIT 8CH 50-200KSPS 16TSSOP

ADC128S022CIMT/NOPB

Manufacturer Part Number
ADC128S022CIMT/NOPB
Description
ADC 12BIT 8CH 50-200KSPS 16TSSOP
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheet

Specifications of ADC128S022CIMT/NOPB

Number Of Bits
12
Sampling Rate (per Second)
200k
Data Interface
DSP, MICROWIRE™, QSPI™, Serial, SPI™
Number Of Converters
1
Power Dissipation (max)
7.5mW
Voltage Supply Source
Analog and Digital
Operating Temperature
-40°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
16-TSSOP (0.173", 4.40mm Width)
For Use With
ADC128S022EVAL - BOARD EVALUATION FOR ADC128S022
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*ADC128S022CIMT
*ADC128S022CIMT/NOPB
ADC128S022CIMT
© 2011 National Semiconductor Corporation
8-Channel, 50 kSPS to 200 kSPS, 12-Bit A/D Converter
General Description
The ADC128S022 is a low-power, eight-channel CMOS 12-
bit analog-to-digital converter specified for conversion
throughput rates of 50 ksps to 200 ksps. The converter is
based on a successive-approximation register architecture
with an internal track-and-hold circuit. It can be configured to
accept up to eight input signals at inputs IN0 through IN7.
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 ADC128S022 may be operated with independent analog
and digital supplies. The analog supply (V
+2.7V to +5.25V, and the digital supply (V
+2.7V to V
supply is 1.2 mW and 7.5 mW, respectively. The power-down
feature reduces the power consumption to 0.06 µW using a
+3V supply and 0.25 µW using a +5V supply.
The ADC128S022 is packaged in a 16-lead TSSOP package.
Operation over the extended industrial temperature range of
−40°C to +105°C is guaranteed.
Connection Diagram
Ordering Information
SPI ™ is a trademark of Motorola, Inc.
ADC128S022CIMT
ADC128S022CIMTX
ADC128S022EVAL
A
. Normal power consumption using a +3V or +5V
Order Code
201627
A
D
) can range from
) can range from
Temperature Range
−40°C to +105°C
−40°C to +105°C
ADC128S022
Features
Key Specifications
Applications
Eight input channels
Variable power management
Independent analog and digital supplies
SPI™/QSPI™/MICROWIRE™/DSP compatible
Packaged in 16-lead TSSOP
Conversion Rate
DNL (V
INL (V
Power Consumption
— 3V Supply
— 5V Supply
Automotive Navigation
Portable Systems
Medical Instruments
Mobile Communications
Instrumentation and Control Systems
A
16-Lead TSSOP Package, Tape & Reel
A
20162705
= V
= V
D
D
= 5.0 V)
16-Lead TSSOP Package
= 5.0 V)
Evaluation Board
Description
+1.0 / −0.7 LSB (max)
50 ksps to 200 ksps
January 28, 2011
±1.0 LSB (max)
www.national.com
1.2 mW (typ)
7.5 mW (typ)

Related parts for ADC128S022CIMT/NOPB

ADC128S022CIMT/NOPB Summary of contents

Page 1

... Operation over the extended industrial temperature range of −40°C to +105°C is guaranteed. Connection Diagram Ordering Information Order Code ADC128S022CIMT ADC128S022CIMTX ADC128S022EVAL SPI ™ trademark of Motorola, Inc. © 2011 National Semiconductor Corporation ADC128S022 Features ■ Eight input channels ■ Variable power management ■ Independent analog and digital supplies ■ ...

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Block Diagram Pin Descriptions and Equivalent Circuits Pin No. Symbol ANALOG I/O IN0 to IN7 DIGITAL I/O 16 SCLK 15 DOUT 14 DIN 1 CS POWER SUPPLY AGND 12 DGND ...

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 Digital Supply Voltage V D Voltage on Any Pin to GND Input Current at Any Pin (Note 3) Package Input Current(Note 3) Power Dissipation 25° ...

Page 4

Symbol Parameter THD Total Harmonic Distortion SFDR Spurious-Free Dynamic Range ENOB Effective Number of Bits ISO Channel-to-Channel Isolation Intermodulation Distortion, Second Order Terms IMD Intermodulation Distortion, Third Order Terms ANALOG INPUT CHARACTERISTICS V Input Range Leakage Current ...

Page 5

Symbol Parameter DIGITAL OUTPUT CHARACTERISTICS V Output High Voltage OH V Output Low Voltage Hi-Impedance Output Leakage Current V OZH OZL Hi-Impedance Output Capacitance C OUT (Note 7) Output Coding POWER SUPPLY CHARACTERISTICS ( ...

Page 6

ADC128S022 Timing Specifications The following specifications apply for V ksps to 200 ksps, and C = 50pF. Boldface limits apply for T L Symbol Parameter t CS Hold Time after SCLK Rising Edge CSH CS Setup Time prior to SCLK ...

Page 7

Timing Diagrams FIGURE 1. ADC128S022 Operational Timing Diagram FIGURE 2. ADC128S022 Serial Timing Diagram FIGURE 3. SCLK and CS Timing Parameters 7 20162706 20162750 www.national.com 20162751 ...

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Specification Definitions ACQUISITION TIME is the time required for the ADC to ac- quire the input voltage. During this time, the hold capacitor is charged by the input voltage. APERTURE DELAY is the time between the fourth falling edge of ...

Page 9

Typical Performance Characteristics unless otherwise stated. DNL INL DNL vs. Supply T = +25° 200 ksps SAMPLE 20162740 20162742 INL vs. Supply 20162721 9 = 3.2 MHz 39.9 kHz SCLK IN DNL 20162741 INL ...

Page 10

SNR vs. Supply ENOB vs. Supply INL vs. V with V D www.national.com 20162722 20162733 = 5 20162731 10 THD vs. Supply 20162732 DNL vs. V with 20162730 DNL vs. SCLK Duty ...

Page 11

INL vs. SCLK Duty Cycle 20162758 THD vs. SCLK Duty Cycle 20162764 DNL vs. SCLK 20162756 SNR vs. SCLK Duty Cycle ENOB vs. SCLK Duty Cycle INL vs. SCLK 11 20162761 20162752 20162759 www.national.com ...

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SNR vs. SCLK ENOB vs. SCLK INL vs. Temperature www.national.com 20162762 DNL vs. Temperature 20162753 SNR vs. Temperature 20162760 12 THD vs. SCLK 20162765 20162757 20162763 ...

Page 13

THD vs. Temperature 20162766 SNR vs. Input Frequency 20162723 ENOB vs. Input Frequency 20162725 ENOB vs. Temperature THD vs. Input Frequency Power Consumption vs. SCLK 13 20162754 20162724 20162744 www.national.com ...

Page 14

Functional Description The ADC128S022 is a successive-approximation analog-to- digital converter designed around a charge-redistribution dig- ital-to-analog converter. 1.1 ADC128S022 OPERATION Simplified schematics of the ADC128S022 in both track and hold operation are shown in Figure 4 tively. In Figure ...

Page 15

ADC automatically enters track mode and the falling edge seen as the first falling edge of SCLK. In the third condition, CS and SCLK go low simultaneously and the ADC enters track mode. While there ...

Page 16

Applications Information 2.1 TYPICAL APPLICATION CIRCUIT A typical application is shown in Figure digital supply pins are both powered in this example by the National LP2950 low-dropout voltage regulator. The analog supply is bypassed with a capacitor network located ...

Page 17

LAYOUT AND GROUNDING Capacitive coupling between the noisy digital circuitry and the sensitive analog circuitry can lead to poor performance. ...

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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 16-Lead TSSOP Order Number ADC128S022CIMT, ADC128S022CIMTX NS Package Number MTC16 18 ...

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Notes 19 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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