MAX7033EUI+

Manufacturer Part NumberMAX7033EUI+
DescriptionRF Receiver IC RX 315MHZ/433MHZ ASK
ManufacturerMaxim Integrated Products
TypeReceiver
MAX7033EUI+ datasheet
 

Specifications of MAX7033EUI+

Package / CaseTSSOP-28Operating Frequency450 MHz
Operating Supply Voltage3.3 V, 5 VMaximum Operating Temperature+ 105 C
Minimum Operating Temperature- 40 CMounting StyleSMD/SMT
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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19-3273; Rev 2; 1/11
315MHz/433MHz ASK Superheterodyne
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
Home Automation
Keyless Entry
Remote Controls
Security Systems
Local Telemetry
Garage Door Openers
Wireless Sensors
Typical Application Circuit appears at end of data sheet.
TOP VIEW
+
XTAL1
1
AVDD
2
LNAIN
3
LNASRC
4
AGND
5
MAX7033
LNAOUT
6
AVDD
7
MIXIN1
8
MIXIN2
9
AGND
10
IRSEL
11
MIXOUT
12
DGND
13
DVDD
14
TSSOP
________________________________________________________________ Maxim Integrated Products
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.
Receiver with AGC Lock
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
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
PART
MAX7033EUI+
MAX7033ETJ+
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
28
XTAL2
27
SHDN
26
PDOUT
+
25
DATAOUT
N.C.
1
24
V
AGND
2
DD5
23
DSP
LNAOUT
3
22
DFFB
AVDD
4
21
OPP
MIXIN1
5
20
DSN
MIXIN2
6
19
DFO
AGND
7
18
IFIN2
IRSEL
8
17
IFIN1
16
XTALSEL
15
AC
Features
/f
Ratio
LO
XTAL
Ordering Information
TEMP RANGE
PIN-PACKAGE
-40°C to +105°C
28 TSSOP
-40°C to +105°C
32 TQFN-EP*
Pin Configurations
24
DATAOUT
23
V
DD5
22
DSP
21
N.C.
MAX7033
20
DFFB
19
OPP
18
DSN
17
DFO
TQFN
1

MAX7033EUI+ Summary of contents

  • Page 1

    ... 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 PART MAX7033EUI+ MAX7033ETJ+ + Denotes a lead(Pb)-free/RoHS-compliant package Exposed pad. 28 XTAL2 27 SHDN ...

  • Page 2

    ASK Superheterodyne Receiver with AGC Lock ABSOLUTE MAXIMUM RATINGS V to AGND.......................................................-0.3V to +6.0V DD5 AVDD to AGND .....................................................-0.3V to +4.0V DVDD to DGND .....................................................-0.3V to +4.0V AGND to DGND.....................................................-0.1V to +0.1V IRSEL, DATAOUT, XTALSEL, AC, SHDN to AGND ...

  • Page 3

    ASK Superheterodyne DC ELECTRICAL CHARACTERISTICS (+5.0V OPERATION) (continued) ( Typical Application Circuit , V = +4.5V to +5.5V signal applied, T DD5 values are +5.0V and T = +25°C.) (Note 1) DD5 A PARAMETER ...

  • Page 4

    ASK Superheterodyne Receiver with AGC Lock AC ELECTRICAL CHARACTERISTICS (continued) ( Typical Application Circuit , AVDD T = -40°C to +105°C, unless otherwise noted. Typical values are PARAMETER SYMBOL LNA IN LOW-GAIN MODE ...

  • Page 5

    ASK Superheterodyne AC ELECTRICAL CHARACTERISTICS (continued) ( Typical Application Circuit , AVDD T = -40°C to +105°C, unless otherwise noted. Typical values are PARAMETER SYMBOL Maximum Load Capacitance C Output High Voltage Output ...

  • Page 6

    ASK Superheterodyne Receiver with AGC Lock ( Typical Application Circuit , AVDD SENSITIVITY vs. TEMPERATURE -108 PEAK RF INPUT POWER 0.2% BER -110 IF BANDWIDTH = 280kHz -112 f = 433MHz RF -114 -116 -118 -120 ...

  • Page 7

    ASK Superheterodyne ( Typical Application Circuit , AVDD NORMALIZED IF GAIN vs. IF FREQUENCY -10 -15 -20 -25 - FREQUENCY (MHz) REGULATOR VOLTAGE vs. REGULATOR CURRENT 3.5 3.3 3.1 2.9 ...

  • Page 8

    ASK Superheterodyne Receiver with AGC Lock PIN NAME TSSOP THIN QFN 1 29 XTAL1 Crystal Input 1 (See the Phase-Locked Loop section) Positive Analog Supply Voltage. For +5V operation, pin 2 is the output of an on-chip +3.2V low-dropout ...

  • Page 9

    ASK Superheterodyne PIN NAME TSSOP THIN QFN Crystal Input 2. Can also be driven with an external reference oscillator. (See the Crystal 28 28 XTAL2 Oscillator section.) 1, 13, — N.C No Connection 21, 25 — — EP Exposed ...

  • Page 10

    ASK Superheterodyne Receiver with AGC Lock The off-chip inductive degeneration is achieved by connecting an inductor from LNASRC to AGND. This inductor sets the real part of the input impedance at LNAIN, allowing for a more flexible input impedance ...

  • Page 11

    ASK Superheterodyne injection is required due to the on-chip image-rejection architecture. The IF output is driven by a source follow- er biased to create a driving-point impedance of 330Ω; this provides a good match to the off-chip 330Ω ceram- ...

  • Page 12

    ASK Superheterodyne Receiver with AGC Lock designed to operate with higher differential load capac- itance always pull the reference frequency higher. For example, a 4.7547MHz crystal designed to operate with a 10pF load capacitance oscillates at 4.7563MHz with the ...

  • Page 13

    ASK Superheterodyne filter output. Both comparator inputs are accessible off- chip to allow for different methods of generating the slicing threshold, which is applied to the second com- parator input. The suggested data slicer configuration uses a resistor (R1) ...

  • Page 14

    ASK Superheterodyne Receiver with AGC Lock THEN DD3 3.0V TO 3.6V CONNECTED CREATED BY LDO, 4.5V TO 5.5V AVAILABLE AT AVDD (PIN 2) C11 RF INPUT C14 ...

  • Page 15

    ... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2011 Maxim Integrated Products ...