19-0537; Rev 0; 4/06
1.8V, Low-Power, 12-Bit, 250Msps
ADC for Broadband Applications
MAX215N
General Description
Features
ꢀ 250Msps Conversion Rate
The MAX1215N is a monolithic, 12-bit, 250Msps ana-
log-to-digital converter (ADC) optimized for outstanding
dynamic performance at high-IF frequencies beyond
300MHz. The product operates with conversion rates
up to 250Msps while consuming only 886mW.
ꢀ Excellent Low-Noise Characteristics
SNR = 66.7dB at f = 100MHz
IN
SNR = 65.6dB at f = 250MHz
IN
ꢀ Excellent Dynamic Range
At 250Msps and an input frequency of 100MHz, the
MAX1215N achieves an 84.7dBc spurious-free dynam-
ic range (SFDR) with e6.7dB signal-to-noise ratio (SNR)
that remains flat (within 2dB) for input tones up to
250MHz. This makes it ideal for wideband applications
such as communications receivers, cable-head end
receivers, and power-amplifier predistortion in cellular
base-station transceivers (BTS).
SFDR = 84.7dBc at f = 100MHz
IN
SFDR = 80dBc at f = 250MHz
IN
ꢀ Single 1.8V Supply
ꢀ 886mW Power Dissipation at f
= 250Msps
SAMPLE
and f = 100MHz
IN
ꢀ On-Chip Track-and-Hold Amplifier
ꢀ Internal 1.25V-Bandgap Reference
The MAX1215N operates from a single 1.8V power sup-
ply. The analog input is designed for AC-coupled differ-
ential or single-ended operation. The ADC also features a
selectable on-chip divide-by-2 clock circuit that accepts
clock frequencies as high as 500MHz. A low-voltage dif-
ferential signal (LVDS) sampling clock is recommended
for best performance. The converter provides LVDS-com-
patible digital outputs with data format selectable to be
either two’s complement or offset binary.
ꢀ On-Chip Selectable Divide-by-2 Clock Input
ꢀ LVDS Digital Outputs with Data Clock Output
ꢀ MAX1215NEVKIT Available
Ordering Information
PIN-
PKG
PART
TEMP RANGE
PACKAGE CODE
The MAX1215N is available in a 68-pin QFN package
with exposed paddle (EP) and is specified over the indus-
trial (-40°C to +85°C) temperature range.
MAX1215NEGK-D -40°C to +85°C 68 QFN-EP* G6800-4
68 QFN-EP*
MAX1215NEGK+D -40°C to +85°C
G6800-4
See the Pin-Compatible Versions table for a complete
selection of 8-bit, 10-bit, and 12-bit high-speed ADCs
in this family.
*EP = Exposed paddle.
+Denotes lead-free package.
D = Dry pack.
Applications
Base-Station Power-Amplifier Linearization
Cable-Head End Receivers
Pin-Compatible Versions
Wireless and Wired Broadband Communications
Communications Test Equipment
SPEED
RESOLUTION
(BITS)
ON-CHIP
BUFFER
PART
GRADE
(Msps)
Radar and Satellite Subsystems
MAX1121
MAX1122
MAX1123
MAX1124
MAX1213
MAX1214
MAX1215
MAX1213N
MAX1214N
MAX1215N
8
250
170
210
250
170
210
250
170
210
250
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
10
10
10
12
12
12
12
12
12
No
Pin Configuration appears at end of data sheet.
No
________________________________________________________________ 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.