Rainbow Electronics MAX1215 - Manual

General Description
The MAX1215 is a monolithic, 12-bit, 250Msps analog-
to-digital converter (ADC) optimized for outstanding
dynamic performance at high-IF frequencies up to
300MHz. The product operates with conversion rates
up to 250Msps while consuming only 975mW.
At 250Msps and an input frequency up to 250MHz, the
MAX1215 achieves a spurious-free dynamic range
(SFDR) of 72.4dBc. Its excellent signal-to-noise ratio
(SNR) of 66dB at 10MHz remains flat (within 2dB) for
input tones up to 300MHz. This ADC yields an excellent
low noise floor of -67.5dBFS, which makes it ideal for
wideband applications such as cable-head end
receivers and power-amplifier predistortion in cellular
base-station transceivers.
The MAX1215 requires a single 1.8V supply. The analog
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 frequencies as high
as 340MHz. This helps to reduce the phase noise of the
input clock source. A low-voltage differential signal
(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 MAX1215 is available in a 68-pin QFN package
with exposed paddle (EP) and is specified over the
industrial (-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.
Applications
Base-Station Power-Amplifier Linearization
Cable-Head End Receivers
Wireless and Wired Broadband Communication
Communications Test Equipment
Radar and Satellite Subsystems
Features
♦ 250Msps Conversion Rate
♦ Low Noise Floor of -67.5dBFS
♦ Excellent Low-Noise Characteristics
SNR = 65.5dB at f IN = 100MHz
SNR = 65dB at f IN = 250MHz
♦ Excellent Dynamic Range
SFDR = 70.7dBc at f IN = 100MHz
SFDR = 72.4dBc at f IN = 250MHz
♦ 65.4dB NPR for f
NOTCH = 28.8MHz and a Noise
Bandwidth of 50MHz
♦ Single 1.8V Supply
♦ 1006mW Power Dissipation at f
SAMPLE = 250MHz
and f IN = 100MHz
♦ On-Chip Track-and-Hold Amplifier
♦ Internal 1.24V-Bandgap Reference
♦ On-Chip Selectable Divide-by-2 Clock Input
♦ LVDS Digital Outputs with Data Clock Output
♦ MAX1215 EV Kit Available
MAX1215
1.8V, 12-Bit, 250Msps ADC for
Broadband Applications
________________________________________________________________ Maxim Integrated Products 1
PART TEMP RANGE PIN-PACKAGE
MAX1215EGK -40 °C to +85°C 68 QFN-EP*
Pin-Compatible Versions
Ordering Information
PART
RESOLUTION
(BITS)
SPEED GRADE
(Msps)
MAX1121 8 250
MAX1122 10 170
MAX1123 10 210
MAX1124 10 250
MAX1213 12 170
MAX1214 12 210
19-3653; Rev 0; 4/05
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.
*EP = Exposed paddle.
EVALUATION KIT
AVAILABLE
Pin Configuration appears at end of data sheet.