MAX7033_11 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – 315MHz/433MHz ASK Superheterodyne Receiver with AGC Lock

19-3273; Rev 2; 1/11
315MHz/433MHz ASK Superheterodyne
Receiver with AGC Lock
General Description
The MAX7033 fully integrated low-power CMOS super-
heterodyne receiver is ideal for receiving amplitude-
shift-keyed (ASK) data in the 300MHz to 450MHz
frequency range. The receiver has an RF input signal
range of -114dBm to 0dBm. With few external compo-
nents and a low-current power-down mode, it is ideal
for cost-sensitive and power-sensitive applications typi-
cal in the automotive and consumer markets. The
MAX7033 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 ana-
log baseband data-recovery circuitry. The MAX7033
also has a discrete one-step automatic gain control
(AGC) that reduces the LNA gain by 35dB when the RF
input signal exceeds -62dBm. The AGC circuitry offers
an externally controlled hold feature.
The MAX7033 is available in 28-pin TSSOP and
32-pin TQFN packages and is specified over the
extended (-40°C to +105°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 433MHz Band
o Operates from Single +3.3V or +5.0V Supplies
o High Dynamic Range with On-Chip AGC
o AGC Hold Circuit
o 1ms AGC Release Time
o Selectable Image-Rejection Center Frequency
o Selectable x64 or x32 f_LO/f_XTAL Ratio
o Low 5.2mA Operating Supply Current
o < 3.5µA Low-Current Power-Down Mode for
Efficient Power Cycling
o 250µs Startup Time
o Built-In 44dB RF Image Rejection
o Better than -114dBm Receive Sensitivity
o -40°C to +105°C Operation
Ordering Information
PART
MAX7033EUI+
MAX7033ETJ+
TEMP RANGE
-40°C to +105°C
-40°C to +105°C
PIN-PACKAGE
28 TSSOP
32 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Pin Configurations
TOP VIEW
+
XTAL1 1
AVDD 2
LNAIN 3
LNASRC 4
AGND 5
LNAOUT 6
MAX7033
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 AC
N.C. 1
+
AGND 2
LNAOUT 3
AVDD 4
MIXIN1 5
MIXIN2 6
AGND 7
IRSEL 8
MAX7033
24 DATAOUT
23 V_DD5
22 DSP
21 N.C.
20 DFFB
19 OPP
18 DSN
17 DFO
TQFN
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.