MAX1215N Datasheet, PDF (1/21 Pages) Maxim Integrated Products – 1.8V, Low-Power, 12-Bit, 250Msps ADC for Broadband Applications

19-0537; Rev 0; 4/06
EVAALVUAAILTAIOBNLEKIT
1.8V, Low-Power, 12-Bit, 250Msps
ADC for Broadband Applications
General Description
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.
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).
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.
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.
See the Pin-Compatible Versions table for a complete
selection of 8-bit, 10-bit, and 12-bit high-speed ADCs
in this family.
Features
o 250Msps Conversion Rate
o Excellent Low-Noise Characteristics
SNR = 66.7dB at f_IN = 100MHz
SNR = 65.6dB at f_IN = 250MHz
o Excellent Dynamic Range
SFDR = 84.7dBc at f_IN = 100MHz
SFDR = 80dBc at f_IN = 250MHz
o Single 1.8V Supply
o 886mW Power Dissipation at f_SAMPLE = 250Msps
and f_IN = 100MHz
o On-Chip Track-and-Hold Amplifier
o Internal 1.25V-Bandgap Reference
o On-Chip Selectable Divide-by-2 Clock Input
o LVDS Digital Outputs with Data Clock Output
o MAX1215NEVKIT Available
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX1215NEGK-D -40°C to +85°C 68 QFN-EP* G6800-4
MAX1215NEGK+D -40°C to +85°C 68 QFN-EP* G6800-4
*EP = Exposed paddle.
+Denotes lead-free package.
D = Dry pack.
Applications
Base-Station Power-Amplifier Linearization
Cable-Head End Receivers
Wireless and Wired Broadband Communications
Communications Test Equipment
Radar and Satellite Subsystems
Pin Configuration appears at end of data sheet.
PART
MAX1121
MAX1122
MAX1123
MAX1124
MAX1213
MAX1214
MAX1215
MAX1213N
MAX1214N
MAX1215N
Pin-Compatible Versions
RESOLUTION
(BITS)
8
10
10
10
12
12
12
12
12
12
SPEED
GRADE
(Msps)
250
170
210
250
170
210
250
170
210
250
ON-CHIP
BUFFER
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
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.