19-3010; Rev 1; 2/04
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15-Bit, 80Msps ADC with -79.3dBFS
Noise Floor for Baseband Applications
The MAX1427 is a 5V, high-speed, high-performance
analog-to-digital converter (ADC) featuring a fully differential wideband track-and-hold (T/H) and a 15-bit converter core. The MAX1427 is optimized for multichannel,
multimode receivers, which require the ADC to meet very
stringent dynamic performance requirements. With a
noise floor of -79.3dBFS, the MAX1427 allows for the
design of receivers with superior sensitivity.
The MAX1427 achieves two-tone, spurious-free dynamic
range (SFDR) of -91dBc for input tones of 10MHz and
15MHz. Its excellent signal-to-noise ratio (SNR) of 76.1dB
and single-tone SFDR performance (SFDR1/SFDR2) of
93.5dBc/94.5dBc at fIN = 15MHz and a sampling rate of
80Msps make this part ideal for high-performance digital
receivers.
The MAX1427 operates from an analog 5V and a digital
3V supply, features a 2.56VP-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
200MHz.
Features
♦ 80Msps Minimum Sampling Rate
♦ -79.3dBFS Noise Floor
♦ Excellent Dynamic Performance
76.1dB SNR at fIN = 15MHz and AIN = -1dBFS
93.5dBc/94.5dBc Single-Tone SFDR1/SFDR2 at
fIN = 15MHz and AIN = -1dBFS
-91dBc Multitone SFDR at fIN1 = 10MHz
and fIN2 = 15MHz
♦ 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
♦ EV Kit Available for MAX1427
(Order MAX1427EVKIT)
The MAX1427 features parallel, CMOS-compatible outputs 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 MAX1427 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 frequencies greater than fCLK/3. The MAX1427 is optimized for
input frequencies of less than fCLK/3.
Ordering Information
PART
MAX1427ETN
*EP
TEMP RANGE
PIN-PACKAGE
-40°C to +85°C
56 Thin QFN-EP*
= Exposed paddle.
Pin-Compatible Higher/Lower
Speed Versions Selection
Applications
Cellular Base-Station Transceiver Systems (BTS)
PART
Wireless Local Loop (WLL)
SPEED GRADE
(Msps)
TARGET
APPLICATION
Single- and Multicarrier Receivers
MAX1418
65
IF
Multistandard Receivers
MAX1419
65
Baseband
E911 Location Receivers
MAX1427
80
Baseband
Power Amplifier Linearity Correction
MAX1428*
80
IF
Antenna Array Processing
MAX1429*
100
Baseband
MAX1430*
100
IF
Pin Configuration appears at end of data sheet.
*Future
product—contact factory for availability.
________________________________________________________________ Maxim Integrated Products
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.
1
MAX1427
General Description
MAX1427
15-Bit, 80Msps ADC with -79.3dBFS
Noise Floor for Baseband Applications
ABSOLUTE MAXIMUM RATINGS
AVCC, DVCC, DRVCC to GND.................................. -0.3V to +6V
INP, INN, CLKP, CLKN, CM to GND........-0.3V to (AVCC + 0.3V)
D0–D14, DAV, DOR to GND..................-0.3V to (DRVCC + 0.3V)
Continuous Power Dissipation (TA = +70°C)
56-Pin Thin QFN (derate 47.6mW/°C above +70°C)................
3809.5mW
Operating Temperature Range ...........................-40°C to +85°C
Thermal Resistance θJA ...................................................21°C/W
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(AVCC = 5V, DVCC = DRVCC = 2.5V, GND = 0, INP and INN driven differentially with -1dBFS, CLKP and CLKN driven differentially
with a 2VP-P sinusoidal input signal, CL = 5pF at digital outputs, fCLK = 80MHz, TA = TMIN to TMAX, unless otherwise noted. Typical
values are at TA = +25°C, unless otherwise noted. ≥+25°C guaranteed by production test,
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