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Maxim Integrated Semiconductor Electronic Components Datasheet


MAX1011

Low-Power / 90Msps / 6-Bit ADC


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MAX1011 pdf
19-1335; Rev 0a; 2/98
EVAALVUAAILTAIOBNLEKIT
Low-Power, 90Msps, 6-Bit ADC
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
o High Sampling Rate: 90Msps
o Low Power Dissipation: 215mW
o Excellent Dynamic Performance:
5.85 ENOB with 20MHz Analog Input
5.7 ENOB with 50MHz Analog Input
o ±1/4LSB INL and DNL (typ)
o ±1/4LSB Input Offset (typ)
o Internal Bandgap Voltage Reference
o Internal Oscillator with Overdrive Capability
o 55MHz (-0.5dB) Bandwidth Input Amplifier with
True Differential Input
o User-Selectable Full-Scale Range
(125mVp-p, 250mVp-p, or 500mVp-p)
o Single-Ended or Differential Input Drive
o Flexible, 3.3V, CMOS-Compatible Digital Outputs
PART
MAX1011CEG
Ordering Information
TEMP. RANGE
0°C to +70°C
PIN-PACKAGE
24 QSOP
Pin Configuration appears at end of data sheet.
Functional Diagram
OCC+
OCC-
IN+
IN-
GAIN
INPUT
AMP
OFFSET
CORREC-
TION
MAX1011
ADC
VREF
BANDGAP
REFERENCE
6 DATA
BUFFER
CLOCK
DRIVER
6
CLOCK
OUT
D0–D5
DCLK
TNK+
TNK-
________________________________________________________________ Maxim Integrated Products 1
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.



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MAX1011 pdf
Low-Power, 90Msps, 6-Bit ADC
ABSOLUTE MAXIMUM RATINGS
VCC to GND ..........................................................-0.3V to +6.5V
VCCO to OGND......................................................-0.3V to +6.5V
GND to OGND ......................................................-0.3V to +0.3V
Digital and Clock Output Pins to OGND...-0.3V to VCCO (10sec)
All Other Pins to GND...............................................-0.3V to VCC
Continuous Power Dissipation (TA = +70°C)
24-Pin QSOP (derate 10mW/°C above +70°C)...........800mW
Operating Temperature Range...............................0°C to +70°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, <10sec)...........................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(VCC = +5V ±5%, VCCO = 3.3V ±300mV, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
DC ACCURACY (Note 1)
Resolution
RES
6
Integral Nonlinearity
INL
-0.5 ±0.25
Differential Nonlinearity
DNL No missing codes over temperature
-0.5 ±0.25
VFSH GAIN = VCC (high gain)
Full-Scale Input Range
VFSM GAIN = open (mid gain)
VFSL GAIN = GND (low gain)
INVERTING AND NONINVERTING ANALOG INPUTS
118.75
237.5
475
125
250
500
Input Open-Circuit Voltage
Input Resistance
Input Capacitance
VAOC
RIN
CIN
Guaranteed by design
2.25 2.35
13 20
1.5
Common-Mode Voltage Range
VCM
Other analog input driven with external source
(Note 2)
1.75
OSCILLATOR INPUTS
Oscillator Input Resistance
DIGITAL OUTPUTS (D0–D5)
ROSC Other oscillator input tied to VCC + 0.3V
4.8 8
Digital Outputs Logic-High
Voltage
VOH
ISOURCE = 50µA
0.7VCCO
Digital Outputs Logic-Low
Voltage
POWER SUPPLY
Supply Current
Power-Supply Rejection Ratio
Digital Outputs Supply Current
Power Dissipation
VOL ISINK = 400µA
ICC
PSRR
ICCO
PD
VCC = 4.75V to 5.25V (Note 3)
20MHz, full-scale analog inputs,
CL = 15pF (Note 4)
37
-65
8.5
215
MAX UNITS
0.5
0.5
131.25
262.5
525
Bits
LSB
LSB
mVp-p
2.45 V
29 k
3 pF
2.75 V
12.1 k
V
0.5 V
63.5 mA
-40 dB
13.8 mA
mW
2 _______________________________________________________________________________________



Part Number MAX1011
Description Low-Power / 90Msps / 6-Bit ADC
Maker Maxim - Maxim
Total Page 12 Pages
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