Rainbow Electronics MAX7033 - Manual

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 a 28-pin TSSOP package
and is specified over the extended (-40°C to +105°C)
temperature range.
Features
♦
Optimized for 315MHz or 433MHz Band
♦ Operates from Single +3.3V or +5.0V Supplies
♦ High Dynamic Range with On-Chip AGC
♦
AGC Hold Circuit
♦ 1ms AGC Release Time
♦ Selectable Image-Rejection Center Frequency
♦
Selectable x64 or x32 f
LO
/f
XTAL
Ratio
♦
Low 5.2mA Operating Supply Current
♦ <3.5µA Low-Current Power-Down Mode for
Efficient Power Cycling
♦ 250µs Startup Time
♦
Built-In 44dB RF Image Rejection
♦
Better than -114dBm Receive Sensitivity
♦ -40°C to +105°C Operation
MAX7033
315MHz/433MHz ASK Superheterodyne
Receiver with AGC Lock
________________________________________________________________ Maxim Integrated Products 1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
XTAL2
SHDN
PDOUT
DATAOUT
V DD5
DSP
AC
DFFB
OPP
DSN
DFO
IFIN2
IFIN1
XTALSEL
DV DD
DGND
MIXOUT
IRSEL
AGND
MIXIN2
MIXIN1
AV DD
LNAOUT
AGND
LNASRC
LNAIN
AV DD
XTAL1
TSSOP
THIN QFN
TOP VIEW
MAX7033
32 31 30 29 28 27 26
LNASRC LNAIN AV
DD
XTAL1 XTAL2 SHDN PDOUT
25
N.C.
9 10 11 12 13 14 15
MIXOUT
DGND DV
DD AC
N.C.
XTALSEL
IFIN1
16
IFIN2
17
18
19
20
21
22
23
DFO
DSN
OPP
DFFB
N.C.
DSP
V DD5
8
7
6
5
4
3
2
IRSEL
AGND
MIXIN2
MIXIN1
AV DD
LNAOUT
AGND
MAX7033
1 N.C. 24 DATAOUT
Pin Configurations
Ordering Information Applications
19-3273; Rev 0; 5/04
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.
*Future product—contact factory for availability.
**EP = Exposed paddle.
Typical Application Circuit appears at end of data sheet.
PART TEMP RANGE PIN-PACKAGE
MAX7033EUI -40 °C to +105°C 28 TSSOP
MAX7033ETJ* -40 °C to +105°C 32 Thin QFN-EP**
Automotive Remote
Keyless Entry
Security Systems
Garage Door Openers
Home Automation
Remote Controls
Local Telemetry
Wireless Sensors