ADC128S102EVAL/NOPB National Semiconductor, ADC128S102EVAL/NOPB Datasheet

no-image

ADC128S102EVAL/NOPB

Manufacturer Part Number
ADC128S102EVAL/NOPB
Description
BOARD EVALUATION FOR ADC128S102
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheet

Specifications of ADC128S102EVAL/NOPB

Number Of Adc's
1
Number Of Bits
12
Sampling Rate (per Second)
1M
Data Interface
Serial
Inputs Per Adc
8 Single Ended
Input Range
0 ~ 5.25 V
Power (typ) @ Conditions
10.7mW @ 1MSPS
Voltage Supply Source
Analog and Digital
Operating Temperature
-40°C ~ 105°C
Utilized Ic / Part
ADC128S102
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ADC128S102EVAL
© 2011 National Semiconductor Corporation
8-Channel, 500 ksps to 1 Msps, 12-Bit A/D Converter
General Description
The ADC128S102 is a low-power, eight-channel CMOS 12-
bit analog-to-digital converter specified for conversion
throughput rates of 500 ksps to 1 MSPS. 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 ADC128S102 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 2.3 mW and 10.7 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 ADC128S102 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.
ADC128S102CIMT
ADC128S102CIMTX
ADC128S102EVAL
A
. Normal power consumption using a +3V or +5V
Order Code
201361
A
D
) can range from
) can range from
Temperature Range
−40°C to +105°C
−40°C to +105°C
ADC128S102
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
20136105
= V
= V
D
D
= 5.0 V)
16-Lead TSSOP Package
= 5.0 V)
Evaluation Board
Description
+1.5 / −0.9 LSB (max)
500 ksps to 1 MSPS
January 28, 2011
±1.2 LSB (max)
10.7 mW (typ)
www.national.com
2.3 mW (typ)

Related parts for ADC128S102EVAL/NOPB

ADC128S102EVAL/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 ADC128S102CIMT ADC128S102CIMTX ADC128S102EVAL SPI ™ trademark of Motorola, Inc. © 2011 National Semiconductor Corporation ADC128S102 Features ■ Eight input channels ■ Variable power management ■ Independent analog and digital supplies ■ ...

Page 2

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

ADC128S102 Timing Specifications The following specifications apply for V ksps to 1 MSPS, 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. ADC128S102 Operational Timing Diagram FIGURE 2. ADC128S102 Serial Timing Diagram FIGURE 3. SCLK and CS Timing Parameters 7 20136151 20136106 20136150 www.national.com ...

Page 8

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° MSPS SAMPLE 20136140 20136142 INL vs. Supply 20136121 MHz 40.2 kHz SCLK IN DNL 20136141 INL ...

Page 10

SNR vs. Supply ENOB vs. Supply INL vs. V with V D www.national.com 20136122 20136133 = 5 20136131 10 THD vs. Supply 20136132 DNL vs. V with 20136130 DNL vs. SCLK Duty ...

Page 11

INL vs. SCLK Duty Cycle 20136158 THD vs. SCLK Duty Cycle 20136164 DNL vs. SCLK 20136156 SNR vs. SCLK Duty Cycle ENOB vs. SCLK Duty Cycle INL vs. SCLK 11 20136161 20136152 20136159 www.national.com ...

Page 12

SNR vs. SCLK ENOB vs. SCLK INL vs. Temperature www.national.com 20136162 DNL vs. Temperature 20136153 SNR vs. Temperature 20136160 12 THD vs. SCLK 20136165 20136157 20136163 ...

Page 13

THD vs. Temperature 20136166 SNR vs. Input Frequency 20136123 ENOB vs. Input Frequency 20136125 ENOB vs. Temperature THD vs. Input Frequency Power Consumption vs. SCLK 13 20136154 20136124 20136144 www.national.com ...

Page 14

Functional Description The ADC128S102 is a successive-approximation analog-to- digital converter designed around a charge-redistribution dig- ital-to-analog converter. 1.1 ADC128S102 OPERATION Simplified schematics of the ADC128S102 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. The ...

Page 18

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 16-Lead TSSOP Order Number ADC128S102CIMT, ADC128S102CIMTX NS Package Number MTC16 18 ...

Page 19

Notes 19 www.national.com ...

Page 20

... 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 ...

Related keywords