MAX7033EUI+ Maxim Integrated Products, MAX7033EUI+ Datasheet - Page 8

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MAX7033EUI+

Manufacturer Part Number
MAX7033EUI+
Description
RF Receiver IC RX 315MHZ/433MHZ ASK
Manufacturer
Maxim Integrated Products
Type
Receiverr
Datasheet

Specifications of MAX7033EUI+

Package / Case
TSSOP-28
Operating Frequency
450 MHz
Operating Supply Voltage
3.3 V, 5 V
Maximum Operating Temperature
+ 105 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
315MHz/433MHz ASK Superheterodyne
Receiver with AGC Lock
8
TSSOP
5, 10
2, 7
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
_______________________________________________________________________________________
1
3
4
6
8
9
PIN
THIN QFN
4, 30
2, 7
29
31
32
10
11
12
14
15
16
17
18
19
20
22
23
24
26
27
3
5
6
8
9
DATAOUT Digital Baseband Data Output
XTALSEL
LNAOUT
LNASRC
MIXOUT
MIXIN1
MIXIN2
PDOUT
NAME
XTAL1
LNAIN
AGND
DGND
AVDD
IRSEL
DVDD
SHDN
IFIN1
IFIN2
DFFB
V
DFO
DSN
OPP
DSP
AC
DD5
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 regulator, and should be bypassed to AGND with a 0.1μF capacitor as close as
possible to the pin. Pin 7 must be externally connected to the supply from pin 2, and bypassed
to AGND with a 0.01μF capacitor as close as possible to the pin. (See the Voltage Regulator
section and the Typical Application Circuit.)
Low-Noise Amplifier Input (See the Low-Noise Amplifier section)
Low-Noise Amplifier Source for External Inductive Degeneration. Connect inductor to ground
to set the LNA input impedance (See the Low-Noise Amplifier section).
Analog Ground
Low-Noise Amplifier Output. Connect to mixer input through an LC tank filter (See the Low-
Noise Amplifier section).
1st Differential Mixer Input. Connect to LC tank filter from LNAOUT.
2nd Differential Mixer Input. Connect through a 100pF capacitor to V
Image-Rejection Select. Set V
unconnected to center image rejection at 375MHz. Set V
rejection at 433MHz.
330Ω Mixer Output. Connect to the input of the 10.7MHz bandpass filter.
Digital Ground
Positive Digital Supply Voltage. Connect to both of the AVDD pins. Bypass to DGND with a
0.01μF capacitor as close as possible to the pin. (See the Typical Application Circuit.)
Automatic Gain Control. See Figure 1. Internally pulled down to AGND with a 100kΩ resistor.
Crystal Divider Ratio Select. Drive XTALSEL low to select divider ratio of 64, or drive XTALSEL
high to select divider ratio of 32.
1st Differential Intermediate-Frequency Limiter Amplifier Input. Bypass to AGND with a 1500pF
capacitor as close to the pin as possible.
2nd Differential Intermediate-Frequency Limiter Amplifier Input. Connect to the output of a
10.7MHz bandpass filter.
Data Filter Output
Negative Data Slicer Input
Noninverting Op-Amp Input for the Sallen-Key Data Filter
Data-Filter Feedback Node. Input for the feedback of the Sallen-Key data filter.
Positive Data Slicer Input
+5V Supply Voltage. Bypass to AGND with a 0.01μF capacitor as close as possible to the pin.
For +5V operation, V
ap p ear s at the p i n 2 AV D D p i n. ( S ee the V ol tag e Reg ul ator secti on and the Typ i cal Ap p l i cati on
C i r cui t.)
Peak-Detector Output
Power-Down Select Input. Drive high to power up the IC. Internally pulled down to AGND with
a 100kΩ resistor.
DD5
is the input to an on-chip voltage regulator whose +3.2V output
IRSEL
= 0V to center image rejection at 315MHz. Leave IRSEL
FUNCTION
IRSEL
= V
DD5
Pin Description
DD3
to center image
side of the LC tank.

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