ADC12DL040EVAL National Semiconductor, ADC12DL040EVAL Datasheet

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ADC12DL040EVAL

Manufacturer Part Number
ADC12DL040EVAL
Description
BOARD EVALUATION FOR ADC12DL040
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheets

Specifications of ADC12DL040EVAL

Number Of Adc's
2
Number Of Bits
12
Sampling Rate (per Second)
40M
Data Interface
Parallel
Inputs Per Adc
1 Differential
Input Range
2 Vpp
Power (typ) @ Conditions
210mW @ 40MSPS
Voltage Supply Source
Analog and Digital
Operating Temperature
-40°C ~ 85°C
Utilized Ic / Part
ADC12DL040
Lead Free Status / RoHS Status
Not applicable / Not applicable
© 2005 National Semiconductor Corporation
ADC12DL040
Dual 12-Bit, 40 MSPS, 3V, 210mW A/D Converter
General Description
The ADC12DL040 is a dual, low power monolithic CMOS
analog-to-digital converter capable of converting analog in-
put signals into 12-bit digital words at 40 Megasamples per
second (MSPS). This converter uses a differential, pipeline
architecture with digital error correction and an on-chip
sample-and-hold circuit to minimize power consumption
while providing excellent dynamic performance and a 250
MHz Full Power Bandwidth. Operating on a single +3.0V
power supply, the ADC12DL040 achieves 11.1 effective bits
at nyquist and consumes just 210 mW at 40 MSPS, including
the reference current. The Power Down feature reduces
power consumption to 36 mW.
The differential inputs provide a full scale differential input
swing equal to 2 times V
ended input. Full use of the differential input is recom-
mended for optimum performance. The digital outputs from
the two ADC’s are available on a single multiplexed 12-bit
bus or on separate buses. Duty cycle stabilization and output
data format are selectable using a quad state function pin.
The output data can be set for offset binary or two’s comple-
ment.
To ease interfacing to lower voltage systems, the digital
output driver power pins of the ADC12DL040 can be con-
nected to a separate supply voltage in the range of 2.4V to
the analog supply voltage.
This device is available in the 64-lead TQFP package and
will operate over the industrial temperature range of −40˚C to
+85˚C. An evaluation board is available to ease the evalua-
tion process.
Connection Diagram
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
REF
with the possibility of a single-
DS201002
Features
n Single +3.0V supply operation
n Internal sample-and-hold
n Internal reference
n Outputs 2.4V to 3.6V compatible
n Power down mode
n Duty Cycle Stabilizer
n Multiplexed Output Mode
Key Specifications
n Resolution
n DNL
n SNR (f
n SFDR (f
n Data Latency
n Power Consumption
n -- Operating
n -- Power Down Mode
Applications
n Ultrasound and Imaging
n Instrumentation
n Communications Receivers
n Sonar/Radar
n xDSL
n Cable Modems
n DSP Front Ends
IN
IN
= 10 MHz)
= 10 MHz)
20100201
November 2005
7 Clock Cycles
±
210 mW (typ)
www.national.com
0.3 LSB (typ)
36 mW (typ)
69 dB (typ)
85 dB (typ)
12 Bits

Related parts for ADC12DL040EVAL

ADC12DL040EVAL Summary of contents

Page 1

... An evaluation board is available to ease the evalua- tion process. Connection Diagram TRI-STATE ® registered trademark of National Semiconductor Corporation. © 2005 National Semiconductor Corporation Features n Single +3.0V supply operation n Internal sample-and-hold n Internal reference n Outputs 2 ...

Page 2

... Ordering Information Industrial (−40˚C ≤ T ADC12DL040CIVS ADC12DL040EVAL Block Diagram www.national.com ≤ +85˚C) Package A 64 Pin TQFP Evaluation Board 2 20100202 ...

Page 3

Pin Descriptions and Equivalent Circuits Pin No. Symbol ANALOG I A− B− REF 21 DF/DCS ...

Page 4

Pin Descriptions and Equivalent Circuits Pin No. Symbol MULTIPLEX 24–29 DA0–DA11 34–39 43–47 DB1–DB11 52–57 42 DB0/ABb ANALOG POWER 9, 18 10, 17, AGND 20, 61, 64 DIGITAL POWER 33, ...

Page 5

... Absolute Maximum Ratings 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications – Voltage on Any Input or Output Pin Input Current at Any Pin (Note 3) Package Input Current (Note 3) Package Dissipation 25˚C A ESD Susceptibility ...

Page 6

Converter Electrical Characteristics Unless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, V +2.5V 0V, External V = +1.0V, f REF parallel output mode. Boldface limits apply for T Symbol Parameter ...

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DC and Logic Electrical Characteristics Unless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, V +2.5V 0V +1.0V, f REF CLK output mode. Boldface limits apply for T Symbol ...

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AC Electrical Characteristics Unless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, V +2.5V 0V, External V = +1.0V, f REF parallel output mode. Boldface limits apply for T Symbol Parameter ...

Page 9

Specification Definitions APERTURE DELAY is the time after the rising 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 www.national.com Output Timing 10 20100209 ...

Page 11

Transfer Characteristic FIGURE 1. Transfer Characteristic 11 20100210 www.national.com ...

Page 12

Typical Performance Characteristics DNL, INL specifications apply for AGND = DGND = DR GND = 0V, V MHz ns pF/pin, Duty Cycle Stabilizer On, parallel output mode. Boldface limits ...

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Typical Performance Characteristics DNL, INL specifications apply for AGND = DGND = DR GND = 0V, V MHz ns pF/pin, Duty Cycle Stabilizer On, parallel output mode. Boldface limits ...

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Typical Performance Characteristics for AGND = DGND = DR GND = 0V ns pF/pin, Duty Cycle Stabilizer On, parallel output mode. Boldface limits apply for all other ...

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Typical Performance Characteristics for AGND = DGND = DR GND = 0V ns pF/pin, Duty Cycle Stabilizer On, parallel output mode. Boldface limits apply for all other ...

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Typical Performance Characteristics for AGND = DGND = DR GND = 0V ns pF/pin, Duty Cycle Stabilizer On, parallel output mode. Boldface limits apply for all other ...

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Typical Performance Characteristics for AGND = DGND = DR GND = 0V ns pF/pin, Duty Cycle Stabilizer On, parallel output mode. Boldface limits apply for all other ...

Page 18

Functional Description Operating on a single +3.0V supply, the ADC12DL040 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 ...

Page 19

Applications Information Where dev is the angular difference in degrees between the two signals having a 180˚ relative phase relationship to each other (see Figure 3). Drive the analog inputs with a source impedance less than 100Ω. 20100212 FIGURE 3. ...

Page 20

Applications Information 2.0 DIGITAL INPUTS Digital TTL/CMOS compatible inputs consist of CLK, OEA, OEB, PD, DF/DCS, and MULTIPLEX. 2.1 CLK The CLK signal controls the timing of the sampling process. Drive the clock input with a stable, low jitter clock ...

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Applications Information data in the ASIC thus avoiding the use of the CLK signal altogether. However, since the ABb signal edges are pro- vided in-phase with the data transitions, generally the ASIC circuitry would have to delay the ABb signal ...

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Applications Information FIGURE 5. Application Circuit using Transformer or Differential Op-Amp Drive Circuit, Multiplex mode www.national.com (Continued) FIGURE 6. Differential Drive Circuit of Figure 4 22 20100266 20100214 ...

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Applications Information 4.0 POWER SUPPLY CONSIDERATIONS The power supply pins should be bypassed with a 10 µF capacitor and with a 0.1 µF ceramic chip capacitor within a centimeter of each power pin. Leadless chip capacitors are preferred because they ...

Page 24

Applications Information Be especially careful with the layout of inductors. Mutual inductance can change the characteristics of the circuit in which they are used. Inductors should not be placed side by side, even with just a small part of their ...

Page 25

Applications Information FIGURE 8. Isolating the ADC Clock from other Circuitry with a Clock Tree 7.0 COMMON APPLICATION PITFALLS Driving the inputs (analog or digital) beyond the power supply rails. For proper operation, all inputs should not go more than ...

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... BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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