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Maxim Integrated Products - 250Msps Analog-to-Digital Converter

Numéro de référence MAX1124
Description 250Msps Analog-to-Digital Converter
Fabricant Maxim Integrated Products 
Logo Maxim Integrated Products 





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MAX1124 fiche technique
19-3029; Rev 1; 2/04
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1.8V, 10-Bit, 250Msps Analog-to-Digital Converter
with LVDS Outputs for Wideband Applications
General Description
The MAX1124 is a monolithic 10-bit, 250Msps analog-
to-digital converter (ADC) optimized for outstanding
dynamic performance at high IF frequencies up to
500MHz. The product operates with conversion rates of
up to 250Msps while consuming only 477mW.
At 250Msps and an input frequency of 100MHz, the
MAX1124 achieves a spurious-free dynamic range
(SFDR) of 71dBc. Its excellent signal-to-noise ratio
(SNR) of 57.1dB at 10MHz remains flat (within 1dB) for
input tones up to 500MHz. This makes the MAX1124
ideal for wideband applications such as digital predis-
tortion in cellular base-station transceiver systems.
The MAX1124 requires a single 1.8V supply. The ana-
log input is designed for either differential or single-
ended operation and can be AC- or DC-coupled. The
ADC also features a selectable on-chip divide-by-2
clock circuit, which allows the user to apply clock fre-
quencies as high as 500MHz. This helps to reduce the
phase noise of the input clock source. A differential
LVDS sampling clock is recommended for best perfor-
mance. The converter’s digital outputs are LVDS com-
patible, and the data format can be selected to be
either two’s complement or offset binary.
The MAX1124 is available in a 68-pin QFN with
exposed paddle (EP) and is specified over the industri-
al (-40°C to +85°C) temperature range.
For pin-compatible, lower speed versions of the
MAX1124, refer to the MAX1122 (170Msps) and the
MAX1123 (210Msps) data sheets. For a pin-compatible
8-bit version of the MAX1124, refer to the MAX1121
data sheet.
Applications
Wireless and Wired Broadband Communication
Cable-Head End Systems
Digital Predistortion Receivers
Communications Test Equipment
Radar and Satellite Subsystems Antenna Array
Processing
Features
250Msps Conversion Rate
SNR = 56.8dB/55.5dB at fIN = 100MHz/500MHz
SFDR = 71dBc/63.8dBc at fIN = 100MHz/500MHz
NPR = 54.8dB at fNOTCH = 28.8MHz
Single 1.8V Supply
477mW Power Dissipation at 250Msps
On-Chip Track-and-Hold and Internal Reference
On-Chip Selectable Divide-by-2 Clock Input
LVDS Digital Outputs with Data Clock Output
Evaluation Kit Available (Order MAX1124EVKIT)
Ordering Information
PART
TEMP RANGE
MAX1124EGK
-40°C to +85°C
*EP = Exposed paddle.
PIN-PACKAGE
68 QFN-EP*
TOP VIEW
Pin Configuration
68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52
AVCC 1
AGND 2
REFIO 3
REFADJ 4
AGND 5
AVCC 6
AGND 7
INP 8
INN 9
AGND 10
AVCC
AVCC
AVCC
AVCC
AGND
11
12
13
14
15
AGND 16
CLKDIV 17
EP
MAX1124
51 D6P
50 D6N
49 D5P
48 D5N
47 D4P
46 D4N
45 OGND
44 OVCC
43 DCLKP
42 DCLKN
41 OVCC
40 D3P
39 D3N
38 D2P
37 D2N
36 D1P
35 D1N
18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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