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MAX101

Description
500Msps, 8-Bit ADC with Track/Hold
File Size113KB,16 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX101 Overview

500Msps, 8-Bit ADC with Track/Hold

19-0296; Rev 0; 8/94
UA
IT MAN
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VALUA
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AVAILA
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500Msps, 8-Bit ADC with Track/Hold
_______________General Description
The MAX101 ECL-compatible, 500Msps, 8-bit analog-
to-digital converter (ADC) allows accurate digitizing of
analog signals from DC to 250MHz (Nyquist frequen-
cy). Dual monolithic converters, driven by the track/hold
(T/H), operate on opposite clock edges (time inter-
leaved). Designed with Maxim’s proprietary advanced
bipolar processes, the MAX101 contains a high-perfor-
mance T/H amplifier and two quantizers in an 84-pin
ceramic flat pack.
The innovative design of the internal T/H assures an
exceptionally wide 1.2GHz input bandwidth and aper-
ture delay uncertainty of less than 2ps, resulting in a
high 7.0 effective bits at the Nyquist frequency. Special
comparator output design and decoding circuitry
reduce out-of-sequence code errors. The probability of
erroneous codes due to metastable states is reduced to
less than 1 error per 10
15
clock cycles. And, unlike
other ADCs that can have errors resulting in false full-
scale or zero-scale outputs, the MAX101 keeps the error
magnitude to less than 1LSB.
The analog input is designed for either differential or
single-ended use with a ±270mV range. Sense pins for
the reference input allow full-scale calibration of the
input range or facilitate ratiometric use.
Phase adjustment is available to adjust the relative
sampling of the converter halves for optimizing convert-
er performance. Input clock phasing is also available
for interleaving several MAX101s for higher effective
sampling rates.
____________________________Features
o
o
o
o
o
o
o
o
o
o
500Msps Conversion Rate
7.0 Effective Bits Typical at 250MHz
1.2GHz Analog Input Bandwidth
Less than ±1/2LSB INL
50Ω Differential or Single-Ended Inputs
±270mV Input Signal Range
Ratiometric Reference Inputs
Dual Latched Output Data Paths
Low Error Rate, Less than 10
-15
Metastable States
84-Pin Ceramic Flat Pack
MAX101
________________________Applications
High-Speed Digital Instrumentation
High-Speed Signal Processing
Medical Systems
Radar/Signal Processing
High-Energy Physics
Communications
______________Ordering Information
PART
MAX101CFR*
TEMP. RANGE
0°C to +70°C
PIN-PACKAGE
84 Ceramic Flat Pack
(with heatsink)
*Contact factory for 84-pin ceramic flat pack without heatsink.
_________________________________________________________Functional Diagram
VA
RT
VA
RTS
VA
RBS
VA
RB
MAX101
8
AIN+
AIN-
TRACK
AND
HOLD
CLK
CLK
FLASH CONVERTER
(8 -BIT)
8
FLASH CONVERTER
(8 -BIT)
L
A
T
C
H
E
S
8
ADATA
STROBE
STROBE
B
U
F
F
E
R
DCLK
DCLK
TRK1
TRK1
PH
ADJ
VB
RT
VB
RTS
VB
RBS
VB
RB
L
A
T
C
H
E
S
8
BDATA
________________________________________________________________
Maxim Integrated Products
1
Call toll free 1-800-998-8800 for free literature.

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