MAX7034_11 Datasheet, PDF (1/14 Pages) Maxim Integrated Products – 315MHz/434MHz ASK Superheterodyne Receiver 250μs Startup Time

19-3109; Rev 2; 5/11
315MHz/434MHz ASK Superheterodyne
Receiver
General Description
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 frequencies). The receiver has an RF sensi-
tivity of -114dBm. With few external components and a
low-current power-down mode, it is ideal for cost-sensi-
tive and power-sensitive applications typical in the
automotive and consumer markets. The MAX7034 con-
sists 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.
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.
Applications
Automotive Remote
Keyless Entry
Security Systems
Garage Door Openers
Home Automation
Remote Controls
Local Telemetry
Wireless Sensors
Typical Application Circuit appears at end of data sheet.
Features
o Optimized for 315MHz or 433.92MHz Band
o Operates from Single +5.0V Supply
o Selectable Image-Rejection Center Frequency
o Selectable x64 or x32 f_LO/f_XTAL Ratio
o Low (< 6.7mA) Operating Supply Current
o < 3.0µA Low-Current Power-Down Mode for
Efficient Power Cycling
o 250µs Startup Time
o Built-In 44dB RF Image Rejection
o Excellent Receive Sensitivity Over Temperature
o -40°C to +125°C Operation
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX7034AUI/V+T -40°C to +125°C
28 TSSOP
/V denotes an automotive qualified part.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Pin Configuration
TOP VIEW
+
XTAL1 1
AVDD 2
LNAIN 3
LNASRC 4
AGND 5
LNAOUT 6
MAX7034
AVDD 7
MIXIN1 8
MIXIN2 9
AGND 10
IRSEL 11
MIXOUT 12
DGND 13
DVDD 14
TSSOP
28 XTAL2
27 SHDN
26 PDOUT
25 DATAOUT
24 V_DD5
23 DSP
22 DFFB
21 OPP
20 DSN
19 DFO
18 IFIN2
17 IFIN1
16 XTALSEL
15 EN_REG
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or visit Maxim’s website at www.maxim-ic.com.