Rainbow-electronics ADC12010 Manual do Utilizador Página 1

Consulte online ou descarregue Manual do Utilizador para Sensores Rainbow-electronics ADC12010. Rainbow Electronics ADC12010 User Manual Manual do Utilizador

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ADC12010
12-Bit, 10 MSPS, 160 mW A/D Converter with Internal
Sample-and-Hold
General Description
The ADC12010 is a monolithic CMOS analog-to-digital con-
verter capable of converting analog input signals into 12-bit
digital words at 10 Megasamples per second (MSPS), mini-
mum. This converter uses a differential, pipeline architecture
with digital error correction and an on-chip sample-and-hold
circuit to minimize die size and power consumption while
providing excellent dynamic performance. Operating on a
single 5V power supply, this device consumes just 160 mW
at 10 MSPS, including the reference current. The Power
Down feature reduces power consumption to 25 mW.
The differential inputs provide a full scale input swing equal
to 2V
REF
with the possibility of a single-ended input. Full use
of the differential input is recommended for optimum perfor-
mance. For ease of use, the buffered, high impedance,
single-ended reference input is converted on-chip to a differ-
ential reference for use by the processing circuitry. Output
data format is 12-bit offset binary.
This device is available in the 32-lead LQFP package and
will operate over the industrial temperature range of −40˚C to
+85˚C.
Features
n Internal sample-and-hold
n Outputs 2.4V to 5V compatible
n TTL/CMOS compatible input/outputs
n Power down mode
n On-chip reference buffer
Key Specifications
n Resolution 12 Bits
n Conversion Rate 10 MSPS (min)
n DNL
±
0.3 LSB (typ)
n INL
±
0.5 LSB (typ)
n SNR (f
IN
= 10.1 MHz) 70 dB (typ)
n ENOB (f
IN
= 10.1 MHz) 11.3 bits (typ)
n Data Latency 6 Clock Cycles
n Supply Voltage +5V
±
5%
n Power Consumption, 10 MHz 160 mW (typ)
Applications
n Image Processing Front End
n Instrumentation
n PC-Based Data Acquisition
n Fax Machines
n Wireless Local Loops/Cable Modems
n Waveform Digitizers
n DSP Front Ends
Connection Diagram
20051601
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
April 2003
ADC12010 12-Bit, 10 MSPS, 160 mW A/D Converter with Internal Sample-and-Hold
© 2003 National Semiconductor Corporation DS200516 www.national.com
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Resumo do Conteúdo

Página 1 - Sample-and-Hold

ADC1201012-Bit, 10 MSPS, 160 mW A/D Converter with InternalSample-and-HoldGeneral DescriptionThe ADC12010 is a monolithic CMOS analog-to-digital con-v

Página 2 - Block Diagram

ADC12010 Typical Performance Characteristics VA=VD= 5,0V, VDR= 3.0V,fCLK= 10 MHz, fIN= 10.1 MHz, VREF= 2.0V unless otherwise statedDNL DNL vs. Tempera

Página 3

ADC12010 Typical Performance Characteristics VA=VD= 5,0V, VDR= 3.0V, fCLK= 10 MHz,fIN= 10.1 MHz, VREF= 2.0V unless otherwise stated (Continued)INL vs.

Página 4

ADC12010 Typical Performance Characteristics VA=VD= 5,0V, VDR= 3.0V, fCLK= 10 MHz,fIN= 10.1 MHz, VREF= 2.0V unless otherwise stated (Continued)SNR vs.

Página 5

ADC12010 Typical Performance Characteristics VA=VD= 5,0V, VDR= 3.0V, fCLK= 10 MHz,fIN= 10.1 MHz, VREF= 2.0V unless otherwise stated (Continued)SINAD v

Página 6

ADC12010 Typical Performance Characteristics VA=VD= 5,0V, VDR= 3.0V, fCLK= 10 MHz,fIN= 10.1 MHz, VREF= 2.0V unless otherwise stated (Continued)SFDR vs

Página 7 - AC Electrical Characteristics

ADC12010 Typical Performance Characteristics VA=VD= 5,0V, VDR= 3.0V, fCLK= 10 MHz,fIN= 10.1 MHz, VREF= 2.0V unless otherwise stated (Continued)Spectra

Página 8 - Specification Definitions

Functional DescriptionOperating on a single +5V supply, the ADC12010 uses apipeline architecture with error correction circuitry to helpensure maximum

Página 9 - Transfer Characteristic

Applications Information (Continued)TABLE 2. Input to Output Relationship —Single-Ended InputVIN+VIN−OutputVCM−VREFVCM0000 0000 0000VCM−VREF/2 VCM0100

Página 10

Applications Information (Continued)2.2 OEThe OE pin, when high, puts the output pins into a highimpedance state. When this pin is low the outputs are

Página 11

Applications Information (Continued)20051614FIGURE 5. Differential Drive Circuit of Figure 420051615FIGURE 6. Driving the Signal Inputs with a Transfo

Página 12

Ordering InformationIndustrial (−40˚C ≤ TA≤ +85˚C) PackageADC12010CIVY 32 Pin LQFPADC12010CIVYX 32 Pin LQFP Tape and ReelADC12010EVAL Evaluation Board

Página 13

Applications Information (Continued)4.0 POWER SUPPLY CONSIDERATIONSThe power supply pins should be bypassed with a 10 µFcapacitor and with a 0.1 µF ce

Página 14

Applications Information (Continued)Be especially careful with the layout of inductors. Mutualinductance can change the characteristics of the circuit

Página 15

Physical Dimensions inches (millimeters) unless otherwise noted32-Lead LQFP PackageOrdering Number ADC12010CIVYNS Package Number VBE32ALIFE SUPPORT PO

Página 16 - Applications Information

Pin Descriptions and Equivalent CircuitsPin No. Symbol Equivalent Circuit DescriptionANALOG I/O2VIN+Non-Inverting analog signal Input. With a 2.0V ref

Página 17

Pin Descriptions and Equivalent Circuits (Continued)Pin No. Symbol Equivalent Circuit Description14–19,22–27D0–D11Digital data output pins that make u

Página 18

Absolute Maximum Ratings (Notes 1,2)If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/Distri

Página 19

Converter Electrical Characteristics (Continued)Unless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, VA=VD= +

Página 20

AC Electrical CharacteristicsUnless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, VA=VD= +5V, VDR=+3.0V, PD =

Página 21

AC Electrical Characteristics (Continued)Note 14: IDRis the current consumed by the switching of the output drivers and is primarily determined by loa

Página 22 - NS Package Number VBE32A

Timing Diagram20051609Output TimingTransfer Characteristic20051610FIGURE 1. Transfer CharacteristicADC12010www.national.com9

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