MAX1003CAX+ Maxim Integrated Products, MAX1003CAX+ Datasheet

IC ADC 6BIT 90MSPS DL 36-SSOP

MAX1003CAX+

Manufacturer Part Number
MAX1003CAX+
Description
IC ADC 6BIT 90MSPS DL 36-SSOP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX1003CAX+

Number Of Bits
6
Sampling Rate (per Second)
90M
Data Interface
Parallel
Number Of Converters
2
Power Dissipation (max)
941mW
Voltage Supply Source
Single Supply
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
36-BSOP (0.300", 7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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
19-1236; Rev 0; 6/97
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
_________________________________________________________Functional Diagram
_______________General Description
GAIN
QIN+
Direct Broadcast Satellite (DBS) Receivers
VSAT Receivers
Wide Local Area Networks (WLANs)
Cable Television Set-Top Boxes
QIN-
IIN+
IIN-
________________________________________________________________ Maxim Integrated Products
INPUT
INPUT
AMP
AMP
Q
I
QOCC+
IOCC+
Low-Power, 90Msps, Dual 6-Bit ADC
CORREC-
CORREC-
OFFSET
OFFSET
TION Q
TION I
IOCC-
QOCC-
REFERENCE
BANDGAP
VREF
VREF
ADC
ADC
Pin Configuration appears at end of data sheet.
____________________________Features
Q
I
______________Ordering Information
MAX1003CAX
Two Matched 6-Bit ADCs
High Sampling Rate: 90Msps per ADC
Low Power Dissipation: 350mW
Excellent Dynamic Performance:
±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
5.85 ENOB with 20MHz Analog Input
5.7 ENOB with 50MHz Analog Input
PART
6
6
CLOCK
DRIVER
TEMP. RANGE
0°C to +70°C
BUFFER
BUFFER
DATA
DATA
Q
I
MAX1003
CLOCK
OUT
6
6
PIN-PACKAGE
36 SSOP
DI0–DI5
DCLK
TNK+
TNK-
DQ0–DQ5
1

Related parts for MAX1003CAX+

MAX1003CAX+ Summary of contents

Page 1

... TION Q QIN+ INPUT AMP QIN- Q QOCC+ ________________________________________________________________ Maxim Integrated Products For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 ____________________________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 ± ...

Page 2

Low-Power, 90Msps, Dual 6-Bit ADC ABSOLUTE MAXIMUM RATINGS V to GND ............................................................-0. OGND ........................................................-0.3V to 6.5V CCO GND to OGND ........................................................-0.3V to 0.3V Digital and Clock Output Pins to OGND...-0. All Other Pins ...

Page 3

Low-Power, 90Msps, Dual 6-Bit ADC AC ELECTRICAL CHARACTERISTICS (V = +5V ±5 3.3V ±300mV CCO PARAMETER SYMBOL DYNAMIC PERFORMANCE (Gain = open, external 90MHz clock (Figure 7), V full scale, unless otherwise noted.) Maximum Sample Rate ...

Page 4

Low-Power, 90Msps, Dual 6-Bit ADC __________________________________________Typical Operating Characteristics (V = +5V ±5 3.3V ±300mV CCO otherwise noted.) EFFECTIVE NUMBER OF BITS vs. ANALOG INPUT FREQUENCY 6.0 5.8 5.6 5.4 5 90Msps CLK 5.0 10 ...

Page 5

Low-Power, 90Msps, Dual 6-Bit ADC ______________________________________________________________Pin Description PIN NAME 1 GAIN Gain-Select Input. Sets input full-scale range: 125/250/500mVp-p (Table 1). Positive I-Channel Offset-Correction Compensation. Connect a 0.22µF capacitor for AC-coupled 2 IOCC+ inputs. Ground for DC-coupled inputs. Negative I-Channel Offset-Correction ...

Page 6

Low-Power, 90Msps, Dual 6-Bit ADC Single-ended and differential AC-coupled input circuits are shown in Figures 2 and 3. Each of the amplifier inputs is internally biased to a 2.35V reference through a 20kΩ resistor, eliminating external DC bias circuits. A ...

Page 7

Low-Power, 90Msps, Dual 6-Bit ADC _OCC+ 0.1 F _IN+ INPUT V AMP SOURCE _IN- 0.1 F 20k 20k 2.35V INTERNAL REFERENCE Figure 2. Single-Ended AC-Coupled Input OFFSET CORRECTION DISABLED _IN+ INPUT V SOURCE AMP _IN- 20k 20k V REF 1.75V ...

Page 8

Low-Power, 90Msps, Dual 6-Bit ADC The MAX1003 features a proprietary encoding scheme that ensures no more than 1LSB dynamic encoding error. Dynamic encoding errors resulting from metastable states may occur when the analog input voltage, at the time the sample ...

Page 9

Low-Power, 90Msps, Dual 6-Bit ADC N ANALOG INPUT t AD 50% TNK+ t DCLK (INPUT CLOCK) 1.4V t DCLK PD t SKEW 1.4V DATA OUT Figure 8. MAX1003 Timing Diagram External Clock Operation To accommodate designs that use an external ...

Page 10

Low-Power, 90Msps, Dual 6-Bit ADC __________Applications Information The MAX1003 is designed with separate analog and digital power-supply and ground connections to isolate high-current digital noise spikes from the more sensi- tive analog circuitry. The high-current digital output ground (OGND) and ...

Page 11

Low-Power, 90Msps, Dual 6-Bit ADC __________________Pin Configuration TOP VIEW GAIN 1 IOCC+ 2 IOCC- 3 IIN+ 4 IIN- 5 MAX1003 GND TNK+ 9 TNK- 10 GND 11 GND QIN- ...

Page 12

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1997 Maxim Integrated Products Printed USA ...

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