Rainbow-electronics MAX1003 Manual de usuario

Busca en linea o descarga Manual de usuario para Sensores Rainbow-electronics MAX1003. Rainbow Electronics MAX1003 User Manual Manual de usuario

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_______________General Description
The MAX1003 is a dual, 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 dual parallel ADCs are
designed to convert in-phase (I) and quadrature (Q)
analog signals into two 6-bit, offset-binary-coded digital
outputs at sampling rates up to 90Msps. The ability to
directly interface with baseband I and Q signals makes
the MAX1003 ideal for use in direct-broadcast satellite,
VSAT, and QAM16 demodulation applications.
The MAX1003 input amplifiers feature true differential
inputs, a -0.5dB analog bandwidth of 55MHz, and user-
programmable input full-scale ranges of 125mVp-p,
250mVp-p, or 500mVp-p. With an AC-coupled input
signal, matching performance between input channels
is typically better than 0.1dB gain, 1/4LSB offset, and
0.5° phase. Dynamic performance is 5.85 effective
number of bits (ENOB) with a 20MHz analog input sig-
nal, or 5.7 ENOB with a 50MHz signal.
The MAX1003 operates with +5V analog and +3.3V digi-
tal supplies for easy interfacing to +3.3V-logic-compati-
ble digital signal processors and microprocessors. It
comes in a 36-pin SSOP package.
________________________Applications
Direct Broadcast Satellite (DBS) Receivers
VSAT Receivers
Wide Local Area Networks (WLANs)
Cable Television Set-Top Boxes
____________________________Features
Two Matched 6-Bit ADCs
High Sampling Rate: 90Msps per ADC
Low Power Dissipation: 350mW
Excellent Dynamic Performance:
5.85 ENOB with 20MHz Analog Input
5.7 ENOB with 50MHz Analog Input
±1/4LSB INL and DNL (typ)
Internal Bandgap Voltage Reference
Internal Oscillator with Overdrive Capability
55MHz (-0.5dB) Bandwidth Input Amplifiers with
True Differential Inputs
User-Selectable Input Full-Scale Range
(125mVp-p, 250mVp-p, or 500mVp-p)
1/4LSB Channel-to-Channel Offset Matching (typ)
0.1dB Gain and 0.5° Phase Matching (typ)
Single-Ended or Differential Input Drive
Flexible, 3.3V, CMOS-Compatible Digital Outputs
MAX1003
Low-Power, 90Msps, Dual 6-Bit ADC
________________________________________________________________
Maxim Integrated Products
1
MAX1003
DATA
BUFFER
Q
CLOCK
DRIVER
DI0–DI5
DCLK
TNK+
TNK-
DQ0–DQ5
INPUT
AMP
I
IIN+
IIN-
GAIN
QIN+
QIN-
CLOCK
OUT
DATA
BUFFER
I
6
ADC
I
ADC
Q
VREF
VREF
BANDGAP
REFERENCE
OFFSET
CORREC-
TION Q
OFFSET
CORREC-
TION I
INPUT
AMP
Q
QOCC+ QOCC-
IOCC+ IOCC-
6
6
6
_________________________________________________________Functional Diagram
19-1236; Rev 0; 6/97
PART
MAX1003CAX 0°C to +70°C
TEMP. RANGE PIN-PACKAGE
36 SSOP
EVALUATION KIT
AVAILABLE
______________Ordering Information
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
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Indice de contenidos

Pagina 1 - Maxim Integrated Products

_______________General DescriptionThe MAX1003 is a dual, 6-bit analog-to-digital converter(ADC) that combines high-speed, low-power operationwith a us

Pagina 2 - DC ELECTRICAL CHARACTERISTICS

MAX1003Low-Power, 90Msps, Dual 6-Bit ADC10 ________________________________________________________________________________________________Application

Pagina 3 - AC ELECTRICAL CHARACTERISTICS

MAX1003Low-Power, 90Msps, Dual 6-Bit ADC______________________________________________________________________________________ 11__________________Pin

Pagina 4

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses arei

Pagina 5 - Programmable Input Amplifiers

MAX1003Low-Power, 90Msps, Dual 6-Bit ADC2 _______________________________________________________________________________________ABSOLUTE MAXIMUM RATI

Pagina 6

MAX1003Low-Power, 90Msps, Dual 6-Bit ADC_______________________________________________________________________________________ 3AC ELECTRICAL CHARACT

Pagina 7

MAX1003Low-Power, 90Msps, Dual 6-Bit ADC4 ____________________________________________________________________________________________________________

Pagina 8 - Oscillator Circuit

_______________Detailed DescriptionConverter OperationThe MAX1003 contains two 6-bit analog-to-digital con-verters (ADCs), a buffered voltage referenc

Pagina 9 - Transfer Function

MAX1003Single-ended and differential AC-coupled input circuitsare shown in Figures 2 and 3. Each of the amplifierinputs is internally biased to a 2.35

Pagina 10 - Table 2. Bypassing

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

Pagina 11 - TOP VIEW

MAX1003The MAX1003 features a proprietary encoding schemethat ensures no more than 1LSB dynamic encodingerror. Dynamic encoding errors resulting fromm

Pagina 12 - SSOP2.EPS

External Clock OperationTo accommodate designs that use an external clock,the MAX1003’s internal oscillator can be overdriven byan external clock sour

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