Rainbow-electronics MAX1011 Uživatelský manuál

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General Description
The MAX1011 is a 6-bit analog-to-digital converter
(ADC) that combines high-speed, low-power operation
with a user-selectable input range, an internal refer-
ence, and a clock oscillator. The ADC converts analog
signals into binary-coded digital outputs at sampling
rates up to 90Msps. The ability to directly interface with
baseband signals makes the MAX1011 ideal for use in
a wide range of communications and instrumentation
applications.
The MAX1011’s input amplifier features a true differential
input, a -0.5dB analog bandwidth of 55MHz, and a user-
programmable input full-scale range of 125mVp-p,
250mVp-p, or 500mVp-p. With an AC-coupled signal,
input offset is typically less than 1/4LSB. Dynamic per-
formance is 5.85 effective number of bits (ENOB) with a
20MHz analog input signal, or 5.7 ENOB with a 50MHz
signal.
The MAX1011 operates with +5V analog and +3.3V digi-
tal supplies for easy interfacing to +3.3V-logic-compatible
digital signal processors and microprocessors. It comes
in a 24-pin QSOP package.
Applications
IF Sampling Receivers
VSAT Receivers
Wide Local Area Networks (WLANs)
Instrumentation
Features
High Sampling Rate: 90Msps
Low Power Dissipation: 215mW
Excellent Dynamic Performance:
5.85 ENOB with 20MHz Analog Input
5.7 ENOB with 50MHz Analog Input
±1/4LSB INL and DNL (typ)
±1/4LSB Input Offset (typ)
Internal Bandgap Voltage Reference
Internal Oscillator with Overdrive Capability
55MHz (-0.5dB) Bandwidth Input Amplifier with
True Differential Input
User-Selectable Full-Scale Range
(125mVp-p, 250mVp-p, or 500mVp-p)
Single-Ended or Differential Input Drive
Flexible, 3.3V, CMOS-Compatible Digital Outputs
MAX1011
Low-Power, 90Msps, 6-Bit ADC
________________________________________________________________
Maxim Integrated Products
1
MAX1011
D0–D5
DCLK
TNK+
TNK-
INPUT
AMP
IN+
IN-
GAIN
DATA
BUFFER
6
ADC
VREF
BANDGAP
REFERENCE
OCC+ OCC-
6
OFFSET
CORREC-
TION
CLOCK
OUT
CLOCK
DRIVER
Functional Diagram
19-1335; Rev 0a; 2/98
PART
MAX1011CEG 0°C to +70°C
TEMP. RANGE PIN-PACKAGE
24 QSOP
EVALUATION KIT
AVAILABLE
Pin Configuration appears at end of data sheet.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
For small orders, phone 408-737-7600 ext. 3468.
Ordering Information
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Shrnutí obsahu

Strany 1 - Low-Power, 90Msps, 6-Bit ADC

General DescriptionThe MAX1011 is a 6-bit analog-to-digital converter(ADC) that combines high-speed, low-power operationwith a user-selectable input r

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MAX1011Low-Power, 90Msps, 6-Bit ADC10 ______________________________________________________________________________________Pin Configuration Chip Inf

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MAX1011Low-Power, 90Msps, 6-Bit ADC______________________________________________________________________________________ 11Package InformationQSOP.EP

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MAX1011Low-Power, 90Msps, 6-Bit ADC12 ______________________________________________________________________________________NOTES

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MAX1011Low-Power, 90Msps, 6-Bit ADC2 _______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSDC

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MAX1011Low-Power, 90Msps, 6-Bit ADC_______________________________________________________________________________________ 3AC ELECTRICAL CHARACTERIST

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MAX1011Low-Power, 90Msps, 6-Bit ADC4 _________________________________________________________________________________________________________________

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_______________Detailed DescriptionConverter OperationThe MAX1011 integrates a 6-bit analog-to-digital con-verter (ADC), a buffered voltage reference,

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MAX1011amplifier inputs is internally biased to a 2.35V referencethrough a 20kΩ resistor, eliminating external DC biascircuits. A series 0.1µF capacit

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For applications where a DC component of the inputsignal is present, Figures 4 and 5 show single-endedand differential DC-coupled input circuits. The

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MAX1011External Clock OperationTo accommodate designs that use an external clock,the MAX1011’s internal oscillator can be overdriven byan external clo

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______________Dynamic PerformanceSignal-to-noise and distortion (SINAD) is the ratio of thefundamental input frequency’s RMS amplitude to allother ADC

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