ADC128S052EVAL/NOPB National Semiconductor, ADC128S052EVAL/NOPB Datasheet

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ADC128S052EVAL/NOPB

Manufacturer Part Number
ADC128S052EVAL/NOPB
Description
BOARD EVALUATION FOR ADC128S052
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheet

Specifications of ADC128S052EVAL/NOPB

Number Of Adc's
1
Number Of Bits
12
Sampling Rate (per Second)
500k
Data Interface
Serial
Inputs Per Adc
8 Single Ended
Input Range
0 ~ 5.25 V
Power (typ) @ Conditions
8.7mW @ 500kSPS
Voltage Supply Source
Analog and Digital
Operating Temperature
-40°C ~ 105°C
Utilized Ic / Part
ADC128S052
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ADC128S052EVAL
© 2010 National Semiconductor Corporation
8-Channel, 200 kSPS to 500 kSPS, 12-Bit A/D Converter
General Description
The ADC128S052 is a low-power, eight-channel CMOS 12-
bit analog-to-digital converter specified for conversion
throughput rates of 200 kSPS to 500 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 ADC128S052 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 1.6 mW and 8.7 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 ADC128S052/ADC128S052Q is packaged in a 16-lead
TSSOP package. The ADC128S052 is guaranteed over
the extended industrial temperature range of −40°C to
+105°C while the ADC128S052Q is guaranteed to an
AECQ100 Grade 1 automotive temperature range of −40°
C to +125°C.
Connection Diagram
Ordering Information
SPI ™ is a trademark of Motorola, Inc.
ADC128S052CIMT
ADC128S052CIMTX
ADC128S052QCMT
ADC128S052QCMTX
ADC128S052EVAL
A
. Normal power consumption using a +3V or +5V
Order Code
ADC128S052/ADC128S052Q
201626
A
D
) can range from
) can range from
Temperature Range
−40°C to +105°C
−40°C to +105°C
−40°C to +125°C
−40°C to +125°C
Features
Key Specifications
Applications
ADC128S052Q is AECQ100 Qualified to Grade1 and is
manufactured on an Automotive Grade Flow
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
16-Lead TSSOP Package
16-Lead TSSOP Package, Tape & Reel
16-Lead TSSOP Package
16-Lead TSSOP Package, Tape & Reel
Evaluation Board
A
A
20162605
= V
= V
D
D
= 5.0 V)
= 5.0 V)
Description
200 kSPS to 500 kSPS
+1.3 / −0.9 LSB (max)
November 30, 2010
±1.0 LSB (max)
www.national.com
1.6 mW (typ)
8.7 mW (typ)

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ADC128S052EVAL/NOPB Summary of contents

Page 1

... Connection Diagram Ordering Information Order Code ADC128S052CIMT ADC128S052CIMTX ADC128S052QCMT ADC128S052QCMTX ADC128S052EVAL SPI ™ trademark of Motorola, Inc. © 2010 National Semiconductor Corporation ADC128S052/ADC128S052Q Features ■ ADC128S052Q is AECQ100 Qualified to Grade1 and is manufactured on an Automotive Grade Flow ■ Eight input channels ■ Variable power management ■ ...

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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 ...

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... 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

ADC128S052 Timing Specifications The following specifications apply for V kSPS to 500 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. ADC128S052 Operational Timing Diagram FIGURE 2. ADC128S052 Serial Timing Diagram FIGURE 3. SCLK and CS Timing Parameters 7 20162651 20162606 20162650 www.national.com ...

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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° 500 kSPS SAMPLE 20162640 20162642 INL vs. Supply 20162621 MHz 40.2 kHz SCLK IN DNL 20162641 INL ...

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SNR vs. Supply ENOB vs. Supply INL vs. V with V D www.national.com 20162622 20162633 = 5 20162631 10 THD vs. Supply 20162632 DNL vs. V with 20162630 DNL vs. SCLK Duty ...

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INL vs. SCLK Duty Cycle 20162658 THD vs. SCLK Duty Cycle 20162664 DNL vs. SCLK 20162656 SNR vs. SCLK Duty Cycle ENOB vs. SCLK Duty Cycle INL vs. SCLK 11 20162661 20162652 20162659 www.national.com ...

Page 12

SNR vs. SCLK ENOB vs. SCLK INL vs. Temperature www.national.com 20162662 DNL vs. Temperature 20162653 SNR vs. Temperature 20162660 12 THD vs. SCLK 20162665 20162657 20162663 ...

Page 13

THD vs. Temperature 20162666 SNR vs. Input Frequency 20162623 ENOB vs. Input Frequency 20162625 ENOB vs. Temperature THD vs. Input Frequency Power Consumption vs. SCLK 13 20162654 20162624 20162644 www.national.com ...

Page 14

Functional Description The ADC128S052 is a successive-approximation analog-to- digital converter designed around a charge-redistribution dig- ital-to-analog converter. 1.1 ADC128S052 OPERATION Simplified schematics of the ADC128S052 in both track and hold operation are shown in Figure 4and ly. 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 Order Number ADC128S052CIMT, ADC128S052CIMTX, ADC128S052QCMT, ADC128S052QCMTX www.national.com inches (millimeters) unless otherwise noted 16-Lead TSSOP 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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