MAX7034
315MHz/434MHz ASK Superheterodyne
Receiver
General Description
Features
The MAX7034 fully integrated low-power CMOS super-
heterodyne receiver is ideal for receiving amplitude-shift-
keyed (ASK) data in the 300MHz to 450MHz frequency
range (including the popular 315MHz and 433.92MHz fre-
quencies). The receiver has an RF sensitivity of -114dBm.
With few external components and a low-current power-
down mode, it is ideal for cost-sensitive and power-sensi-
tive applications typical in the automotive and consumer
markets. The MAX7034 consists of a low-noise amplifier
(LNA), a fully differential image-rejection mixer, an on-
chip phase-locked loop (PLL) with integrated voltage-
controlled oscillator (VCO), a 10.7MHz IF limiting amplifier
stage with received-signal-strength indicator (RSSI), and
analog baseband data-recovery circuitry.
● Optimized for 315MHz or 433.92MHz Band
● Operates from Single +3.3V/+5.0V Supply
● Selectable Image-Rejection Center Frequency
● Selectable x64 or x32 f /f
Ratio
LO XTAL
● Low (< 6.7mA) Operating Supply Current
● < 3.0μA Low-Current Power-Down Mode for Efficient
Power Cycling
● 250μs Startup Time
● Built-In 44dB RF Image Rejection
● Excellent Receive Sensitivity Over Temperature
● -40°C to +125°C Operation
● -40°C to +105°C Operation (3.0V to 3.6V Supply)
The MAX7034 is available in a 28-pin (9.7mm x 4.4mm)
TSSOP package and is specified over the automotive
(-40°C to +125°C) temperature range.
Ordering Information and Typical Application Circuit
appear at end of data sheet.
Applications
● Automotive Remote
● Home Automation
● Remote Controls
● Local Telemetry
● Wireless Sensors
Keyless Entry
Pin Configuration
● Security Systems
● Garage Door Openers
TOP VIEW
+
XTAL1
AVDD
1
2
3
4
5
6
7
8
9
28 XTAL2
27 SHDN
LNAIN
26 PDOUT
25 DATAOUT
LNASRC
AGND
24
V
DD5
MAX7034
LNAOUT
AVDD
23 DSP
22 DFFB
21 OPP
MIXIN1
MIXIN2
20 DSN
AGND 10
IRSEL 11
MIXOUT 12
DGND 13
DVDD 14
19 DFO
18 IFIN2
17 IFIN1
16 XTALSEL
15 EN_REG
TSSOP
19-3109; Rev 4; 11/16