19-3433; Rev 0; 10/04
15-Bit, 80Msps ADC with -78.4dBFS
Noise Floor for IF Applications
General Description
Features
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.
♦ 80Msps Minimum Sampling Rate
♦ -78.4dBFS Noise Floor
♦ Excellent Dynamic Performance
73.9dB SNR at fIN = 70MHz and AIN = -2dBFS
83dBc/91dBc Single-Tone SFDR1/SFDR2 at
fIN = 70MHz and A = -2dBFS
IN
-82dB Multitone SFDR at fIN1 = 69MHz
and fIN2 = 71MHz
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 = 70MHz and a sampling rate of
IN
80Msps make this part ideal for high-performance digital
receivers.
♦ Less than 0.25ps Sampling Jitter
♦ Fully Differential Analog Input Voltage Range of
2.56VP-P
♦ CMOS-Compatible Two’s-Complement Data Output
♦ Separate Data Valid Clock and Overrange Outputs
♦ Flexible-Input Clock Buffer
The MAX1428 operates from an analog 5V and a digital
3V supply, features a 2.56V
full-scale input range,
P-P
and allows for a sampling speed of up to 80Msps. The
input T/H operates with a -1dB full-power bandwidth of
260MHz.
♦ EV Kit Available for MAX1428
(Order MAX1427EVKIT)
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.
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
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-
MAX1428ETN
-40°C to +85°C
56 Thin QFN-EP*
*EP = Exposed paddle.
cies greater than f
/3. Unlike its baseband counter-
CLK
part MAX1427, the MAX1428 is optimized for input
frequencies greater than f /3.
CLK
Pin-Compatible Higher/Lower
Speed Versions Selection
Applications
Cellular Base-Station Transceiver Systems (BTS)
Wireless Local Loop (WLL)
SPEED GRADE
(Msps)
TARGET
APPLICATION
PART
Single- and Multicarrier Receivers
Multistandard Receivers
MAX1418
65
65
IF
MAX1419
MAX1427
MAX1428
MAX1429
MAX1430
Baseband
Baseband
IF
80
E911 Location Receivers
80
Power Amplifier Linearity Correction
Antenna Array Processing
100
100
Baseband
IF
Pin Configuration appears at end of data sheet.
________________________________________________________________ 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.