19-3028; Rev 1; 2/04
1.8V, 10-Bit, 210Msps Analog-to-Digital Converter
with LVDS Outputs for Wideband Applications
General Description
Features
The MAX1123 is a monolithic 10-bit, 210Msps 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 210Msps while consuming only 460mW.
♦ 210Msps Conversion Rate
♦ SNR = 57.4dB/56dB at f = 100MHz/500MHz
IN
♦ SFDR = 74.5dBc/62.6dBc at f = 100MHz/500MHz
IN
♦ NPR = 53.6dB at f
= 28.8MHz
NOTCH
At 210Msps and an input frequency of 100MHz, the
MAX1123 achieves a spurious-free dynamic range
(SFDR) of 74.5dBc. Its excellent signal-to-noise ratio
(SNR) of 57.4dB at 10MHz remains flat (within 1.5dB)
for input tones up to 500MHz. This makes the MAX1123
ideal for wideband applications such as digital predis-
tortion in cellular base-station transceiver systems.
♦ Single 1.8V Supply
♦ 460mW Power Dissipation at 210Msps
♦ 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)
The MAX1123 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 420MHz. 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.
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX1123EGK
-40°C to +85°C
68 QFN-EP*
*EP = Exposed paddle.
The MAX1123 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.
Pin Configuration
For pin-compatible, lower and higher speed versions of
the MAX1123, refer to the MAX1122 (170Msps) and the
MAX1124 (250Msps) data sheets. For a higher speed,
pin-compatible 8-bit version of the MAX1123, refer to
the MAX1121 data sheet.
TOP VIEW
68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52
Applications
Wireless and Wired Broadband Communication
Cable-Head End Systems
AV
1
2
3
4
5
6
7
8
9
51 D6P
50 D6N
49 D5P
48 D5N
47 D4P
46 D4N
45 OGND
CC
AGND
REFIO
EP
REFADJ
AGND
Digital Predistortion Receivers
AV
CC
AGND
INP
Communications Test Equipment
44 OV
CC
INN
43 DCLKP
42 DCLKN
Radar and Satellite Subsystems Antenna Array
Processing
MAX1123
AGND 10
AV
AV
AV
AV
11
12
13
14
41 OV
CC
CC
CC
CC
CC
40 D3P
39 D3N
38 D2P
37 D2N
36 D1P
35 D1N
AGND 15
AGND 16
CLKDIV 17
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.