MAX1428 Datasheet, PDF (1/18 Pages) Maxim Integrated Products – 15-Bit, 80Msps ADC with -78.4dBFS Noise Floor for IF Applications

19-3433; Rev 0; 10/04
EVAALVUAAILTAIOBNLEKIT
15-Bit, 80Msps ADC with -78.4dBFS
Noise Floor for IF Applications
General Description
The MAX1428 is a 5V, high-speed, high-performance
analog-to-digital converter (ADC) featuring a fully differ-
ential wideband track-and-hold (T/H) and a 15-bit con-
verter core. The MAX1428 is optimized for multichannel,
multimode receivers, which require the ADC to meet very
stringent dynamic performance requirements. With a
noise floor of -78.4dBFS, the MAX1428 allows for the
design of receivers with superior sensitivity.
The MAX1428 achieves two-tone, spurious-free dynamic
range (SFDR) of -82dBc for input tones of 69MHz and
71MHz. Its excellent signal-to-noise ratio (SNR) of 73.9dB
and single-tone SFDR performance (SFDR1/SFDR2) of
83dBc/91dBc at f_IN = 70MHz and a sampling rate of
80Msps make this part ideal for high-performance digital
receivers.
The MAX1428 operates from an analog 5V and a digital
3V supply, features a 2.56V_P-P full-scale input range,
and allows for a sampling speed of up to 80Msps. The
input T/H operates with a -1dB full-power bandwidth of
260MHz.
The MAX1428 features parallel, CMOS-compatible out-
puts in two’s-complement format. To enable the interface
with a wide range of logic devices, this ADC provides a
separate output driver power-supply range of 2.3V to
3.5V. The MAX1428 is manufactured in an 8mm x 8mm,
56-pin thin QFN package with exposed paddle (EP) for
low thermal resistance, and is specified for the extended
industrial (-40°C to +85°C) temperature range.
Note that IF parts MAX1418, MAX1428, and MAX1430
(see Pin-Compatible Higher/Lower Speed Versions
Selection table) are recommended for applications that
require high dynamic performance for input frequen-
cies greater than f_CLK/3. Unlike its baseband counter-
part MAX1427, the MAX1428 is optimized for input
frequencies greater than f_CLK/3.
Applications
Cellular Base-Station Transceiver Systems (BTS)
Wireless Local Loop (WLL)
Single- and Multicarrier Receivers
Multistandard Receivers
E911 Location Receivers
Power Amplifier Linearity Correction
Antenna Array Processing
Features
♦ 80Msps Minimum Sampling Rate
♦ -78.4dBFS Noise Floor
♦ Excellent Dynamic Performance
73.9dB SNR at f_IN = 70MHz and A_IN = -2dBFS
83dBc/91dBc Single-Tone SFDR1/SFDR2 at
f_IN = 70MHz and A_IN = -2dBFS
-82dB Multitone SFDR at f_IN1 = 69MHz
and f_IN2 = 71MHz
♦ Less than 0.25ps Sampling Jitter
♦ Fully Differential Analog Input Voltage Range of
2.56V_P-P
♦ CMOS-Compatible Two’s-Complement Data Output
♦ Separate Data Valid Clock and Overrange Outputs
♦ Flexible-Input Clock Buffer
♦ EV Kit Available for MAX1428
(Order MAX1427EVKIT)
Ordering Information
PART
TEMP RANGE
MAX1428ETN
-40°C to +85°C
*EP = Exposed paddle.
PIN-PACKAGE
56 Thin QFN-EP*
Pin-Compatible Higher/Lower
Speed Versions Selection
PART
MAX1418
MAX1419
MAX1427
MAX1428
MAX1429
MAX1430
SPEED GRADE
(Msps)
65
65
80
80
100
100
TARGET
APPLICATION
IF
Baseband
Baseband
IF
Baseband
IF
Pin Configuration appears at end of data sheet.
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