ADC12C080EB National Semiconductor, ADC12C080EB Datasheet

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ADC12C080EB

Manufacturer Part Number
ADC12C080EB
Description
BOARD EVALUATION FOR ADC12C08
Manufacturer
National Semiconductor
Series
PowerWise®r

Specifications of ADC12C080EB

Number Of Adc's
1
Number Of Bits
12
Sampling Rate (per Second)
80M
Data Interface
Parallel
Inputs Per Adc
1 Differential
Input Range
2 Vpp
Power (typ) @ Conditions
270mW @ 80MSPS
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Utilized Ic / Part
ADC12C08
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
© 2007 National Semiconductor Corporation
ADC12C080
12-Bit, 65/80 MSPS A/D Converter
General Description
The ADC12C080 is a high-performance CMOS analog-to-
digital converter capable of converting analog input signals
into 12-bit digital words at rates up to 80 Mega Samples Per
Second (MSPS). This converter uses a differential, pipelined
architecture with digital error correction and an on-chip sam-
ple-and-hold circuit to minimize power consumption and the
external component count, while providing excellent dynamic
performance. A unique sample-and-hold stage yields a full-
power bandwidth of 1 GHz. The ADC12C080 may be oper-
ated from a single +3.0V power supply and consumes low
power. A separate +2.5V supply may be used for the digital
output interface which allows lower power operation with re-
duced noise. A power-down feature reduces the power con-
sumption to very low levels while still allowing fast wake-up
time to full operation. The differential inputs accept a 2V full
scale differential input swing. A stable 1.2V internal voltage
reference is provided, or the ADC12C080 can be operated
with an external 1.2V reference. Output data format (offset
binary versus 2's complement) and duty cycle stabilizer are
pin-selectable. The duty cycle stabilizer maintains perfor-
mance over a wide range of clock duty cycles.
The ADC12C080 is available in a 32-lead LLP package and
operates over the industrial temperature range of −40°C to
+85°C.
Connection Diagram
202111
Features
Key Specifications
Applications
1 GHz Full Power Bandwidth
Internal reference and sample-and-hold circuit
Low power consumption
Data Ready output clock
Clock Duty Cycle Stabilizer
Single +3.0V supply operation
Power-down mode
32-pin LLP package, (5x5x0.8mm, 0.5mm pin-pitch)
Resolution
Conversion Rate
SNR (f
SFDR (f
Full Power Bandwidth
Power Consumption
High IF Sampling Receivers
Wireless Base Station Receivers
Test and Measurement Equipment
Communications Instrumentation
Portable Instrumentation
IN
IN
= 170 MHz)
= 170 MHz)
20211101
68 dBFS (typ)
86 dBFS (typ)
www.national.com
300 mW (typ)
August 2007
1 GHz (typ)
80 MSPS
12 Bits

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ADC12C080EB Summary of contents

Page 1

... The ADC12C080 is available in a 32-lead LLP package and operates over the industrial temperature range of −40°C to +85°C. Connection Diagram © 2007 National Semiconductor Corporation Features ■ 1 GHz Full Power Bandwidth ■ Internal reference and sample-and-hold circuit ■ ...

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... Block Diagram Ordering Information Industrial (−40°C www.national.com ≤ ≤ T +85°C) A ADC12C080CISQ ADC12C080CISQE 250-Piece Tape and Reel ADC12C080EB 2 Package 32 Pin LLP 32 Pin LLP, Evaluation Board 20211102 ...

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Pin Descriptions and Equivalent Circuits Pin No. Symbol ANALOG I CMO REF 12 OF/DCS DIGITAL I/O 11 CLK 30 PD Equivalent Circuit ...

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Pin No. Symbol 15-19, D0–D11 23-29 21 DRDY ANALOG POWER AGND Exposed Pad DIGITAL POWER DRGND www.national.com Equivalent Circuit Digital data output pins that make up the 12-bit ...

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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. Supply Voltage ( Voltage on Any Pin (Not to exceed 4.2V) Input Current at Any Pin other than Supply Pins (Note 4) Package Input Current (Note 4) ...

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Symbol Parameter V Internal Reference bottom RN EXT External Reference Voltage V REF ADC12C080 Dynamic Converter Electrical Characteristics Unless otherwise specified, the following specifications apply: AGND = DRGND = 0V, V +1.2V MHz, 50% Duty Cycle, DCS ...

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Symbol Parameter DIGITAL OUTPUT CHARACTERISTICS (D0–D11, DRDY) V Logical “1” Output Voltage OUT(1)(1) V Logical “0” Output Voltage OUT(0)(0) +I Output Short Circuit Source Current SC −I Output Short Circuit Sink Current SC C Digital Output Capacitance OUT POWER SUPPLY ...

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Dynamic Converter Electrical Characteristics at 65MSPS Unless otherwise specified, the following specifications apply: AGND = DRGND = 0V, V +1.2V MHz, 50% Duty Cycle, DCS Disabled, V CLK ≤ ≤ . All other limits apply for T ...

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Note 9: With a full scale differential input of 2V P-P Note 10: Typical figures are 25°C and represent most likely parametric norms at the time of product characterization. The typical specifications are not A guaranteed. Note ...

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Specification Definitions APERTURE DELAY is the time after the falling edge of the clock to when the input signal is acquired or held for conver- sion. APERTURE JITTER (APERTURE UNCERTAINTY) is the variation in aperture delay from sample to sample. ...

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Timing Diagram Transfer Characteristic Typical Performance Characteristics DNL, INL specifications apply: AGND = DRGND = 0V, V DCS disabled pF/pin CMO L FIGURE 1. Output Timing FIGURE 2. Transfer Characteristic Unless ...

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DNL DNL vs. f DNL vs. Temperature www.national.com 20211141 CLK 20211143 20211147 12 INL 20211142 INL vs. f CLK 20211144 INL vs. Temperature 20211148 ...

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DNL vs 20211149 13 INL vs 20211150 www.national.com ...

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Typical Performance Characteristics AGND = DRGND = 0V +3.0V MHz pF/pin. T CMO IN L SNR, SINAD, SFDR vs. V SNR, SINAD, SFDR vs. V SNR, SINAD, SFDR ...

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SNR, SINAD, SFDR vs. Clock Duty Cycle SNR, SINAD, SFDR vs. Clock Duty Cycle, DCS Enabled SNR, SINAD, SFDR vs. f Distortion vs. Clock Duty Cycle 20211157 Distortion vs. Clock Duty Cycle, DCS Enabled 20211159 IN 20211163 15 20211158 20211160 ...

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SNR, SINAD, SFDR vs. Temperature Spectral Response @ 10 MHz input Spectral Response @ 170 MHz input www.national.com Distortion vs. Temperature 20211165 Spectral Response @ 70 MHz input 20211168 Intermodulation Distortion, f 20211170 16 20211166 20211169 1= 19.5 MHz, f ...

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Power vs. f CLK 20211172 17 www.national.com ...

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Functional Description Operating on a single +3.0V supply, the ADC12C080 uses a pipeline architecture and has error correction circuitry to help ensure maximum performance. The differential analog input signal is digitized to 12 bits. The user has the choice of ...

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− V − REF CM REF V − REF CM REF − ...

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It is important that all grounds associated with the reference voltage and the analog input signal make connection to the ground plane at a ...

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POWER SUPPLY CONSIDERATIONS The power supply pins should be bypassed with a 0.1 µF ca- pacitor and with a 100 pF ceramic chip capacitor close to each power pin. Leadless chip capacitors are preferred because they have low series ...

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All ground connections should have a low inductance path to ground. 7.0 DYNAMIC PERFORMANCE To achieve the best dynamic performance, the clock source driving the CLK input must have ...

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Physical Dimensions inches (millimeters) unless otherwise noted TOP View...............................SIDE View...............................BOTTOM View 32-Lead LLP Package Ordering Numbers: ADC12C080CISQ NS Package Number SQA32A 23 www.national.com ...

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... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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