MAXIM MAX7036 Technical data

General Description

The MAX7036 low-cost receiver is designed to receive
amplitude-shift-keyed (ASK) and on-off-keyed (OOK)
data in the 300MHz to 450MHz frequency range. The
receiver has an RF input signal range of -109dBm to
0dBm.

The MAX7036 requires few external components and
has a power-down pin to put it in a low-current sleep
mode, making it ideal for cost- and power-sensitive
applications. The low-noise amplifier (LNA), phase­locked loop (PLL), mixer, IF filter, received-signal­strength indicator (RSSI), and baseband sections are
all on-chip. The MAX7036 uses a very-low intermediate
frequency (VLIF) architecture. The MAX7036 integrates
the IF filter on-chip and therefore eliminates an external
ceramic filter, reducing the bill-of-materials cost. The
device also contains an on-chip automatic gain control
(AGC) that reduces the LNA gain by 30dB when the
input signal power is large. The MAX7036 operates
from either a 5V or a 3.3V power supply and draws

5.5mA (typ) of current.

The MAX7036 is available in a 20-pin thin QFN pack­age with an exposed pad and is specified over the
AEC-Q100 Level 2 (-40°C to +105°C) temperature
range.

Applications

Low-Cost RKE

Garage Door Openers

Remote Controls

Home Automation

Sensor Networks

Security Systems

Features

o ASK/OOK Modulation

o < 250µs Enable Turn-On Time

o On-Chip PLL, VCO, Mixer, IF, Baseband

o Low IF (200kHz Nominal)

o 5.5mA DC Current

o 1µA Standby Current

o 3.3V/5V Operation

o Small 20-Pin Thin QFN Package with an Exposed

Pad

MAX7036

300MHz to 450MHz ASK Receiver

with Internal IF Filter

________________________________________________________________

Maxim Integrated Products

1

Pin Configuration

Ordering Information

19-4386; Rev 1; 8/10

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.

EVALUATION KIT

AVAILABLE

PART TEMP RANGE PIN-PACKAGE

-40°C to +105°C

20 Thin QFN-EP*

/V

denotes an automotive qualified part.

+

Denotes a lead(Pb)-free/RoHS-compliant package.

*

EP = Exposed pad.

MAX7036GTP/V+

TOP VIEW

DSP

DSN

PDOUT

V

DATAOUT

OPP

DFFB

15 14 12 11

16

17

18

19

DD

20

+

MAX7036

13

DCOC

DVDD

IFC3

IFC1

10

IFC2

9

8

MIXIN1

MIXIN2

7

LNAOUT

6

EP

12

XTAL2

ENABLE

THIN QFN

5mm x 5mm

45

3

AVDD

XTAL1

LNAIN

MAX7036

300MHz to 450MHz ASK Receiver
with Internal IF Filter

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

3.3V DC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

, 50Ω system impedance, V

AVDD

= V

DVDD

= VDD= 3.0V to 3.6V, fRF= 300MHz to 450MHz, TA= -40°C to

+105°C, unless otherwise noted. Typical values are at V

AVDD

= V

DVDD

= VDD= 3.3V, TA= +25°C, unless otherwise noted.) (100%

tested at T

A

= +105°C.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

VDDto GND...........................................................-0.3V to +6.0V

AVDD to GND........................................................-0.3V to +4.0V

DVDD to GND........................................................-0.3V to +4.0V

ENABLE to GND.........................................-0.3V to (V

DD

+ 0.3V)

LNAIN to GND .......................................................-0.3V to +1.2V

All Other Pins to GND.............................-0.3V to (V

DVDD

+ 0.3V)
Continuous Power Dissipation (T

A

= +70°C)

20-Pin TQFN (derate 20.8mW/°C above +70°C) ....1666.7mW

Junction-to-Case Thermal Resistance (θ

JC

) (Note 1)

20-Pin TQFN...................................................................2°C/W

Junction-to-Ambient Thermal Resistance (θ

JA

) (Note 1)

20-Pin TQFN.................................................................48°C/W

Operating Temperature Range .........................-40°C to +105°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Soldering Temperature (reflow) .......................................+260°C

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a single-

layer board. For detailed information on package thermal considerations, go to www.maxim-ic.com/thermal-tutorial

.

Supply Voltage V

Supply Current I

DIGITAL INPUT (ENABLE)

Input High Voltage V

Input Low Voltage V

Input Current I

DIGITAL OUTPUT (DATAOUT)

Output Low Voltage V

Output High Voltage V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

IH

IL

V

AVDD

TA < +105°C

V

AVDD

V

AVDD

0 ≤ V

I

SINK

I

SOURCE

DD

IN

ENABLE

OL

OH

= V

DVDD

= V

DVDD

= V

DVDD

ENABLE

= 100μA 0.4 V

= 100μA

≤ V

= V

DD

fRF = 315MHz 5.3 6.7

fRF = 433MHz 5.8 7.3

Deep-sleep mode,

ENABLE

= 0V

= V

= V

DD

V

DD

DD

3.0 3.3 3.6 V

VDD -

0.4

V

-

DD

0.4

1 2.7 μA

0.4 V

20 μA

mA

V

V

MAX7036

300MHz to 450MHz ASK Receiver

with Internal IF Filter

_______________________________________________________________________________________ 3

5.0V DC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

, 50Ω system impedance, VDD= 4.5V to 5.5V, fRF= 300MHz to 450MHz, TA= -40°C to +105°C, unless

otherwise noted. Typical values are at V

DD

= 5.0V, TA= +25°C, unless otherwise noted.) (100% tested at TA= +105°C.)

AC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

, 50Ω system impedance, V

AVDD

= V

DVDD

= VDD= 3.0V to 3.6V, fRF= 300MHz to 450MHz, TA= -40°C to

+105°C, unless otherwise noted. Typical values are at V

AVDD

= V

DVDD

= VDD= 3.3V, TA= +25°C, fRF= 315MHz, unless otherwise

noted.) (100% tested at T

A

= +105°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage V

Supply Current I

DIGITAL INPUT (ENABLE)

Input High Voltage V

Input Low Voltage V

Input Current I

DIGITAL OUTPUT (DATAOUT)

Output Low Voltage V

Output High Voltage V

DD

IH

IL

TA < +105°C

V

= V

AVDD

V

AVDD

0 ≤ V

I

SINK

I

SOURCE

DVDD

= V

DVDD

ENABLE

= 100μA 0.4 V

= 100μA

IN

ENABLE

OL

OH

≤ V

4.5 5.0 5.5 V

fRF = 315MHz 5.4 6.8

fRF = 433MHz 5.9 7.4

Deep-sleep mode,

ENABLE

= 0V

VDD -

0.4

V

DD

0.4

-

V

DD

mA

1 3.4 μA

V

0.4 V

20 μA

V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Receiver Input Frequency Range f

Maximum Receiver Input Level P

Sensitivity (Note 2)

Power-On Time t

AGC Hysteresis 5dB

AGC Low Gain-to-High Gain
Switching Time

RF

RFIN

ON

fRF = 315MHz -109

= 433MHz -107

f

RF

Time for valid RSSI
output, does not
include baseband
filter settling

300 450 MHz

0 dBm

Enable power on
(V

> 3.0V)

DD

V

power on 1 ms

DD

250 μs

13 ms

dBm

MAX7036

300MHz to 450MHz ASK Receiver
with Internal IF Filter

4 _______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS (continued)

(

Typical Application Circuit

, 50Ω system impedance, V

AVDD

= V

DVDD

= VDD= 3.0V to 3.6V, fRF= 300MHz to 450MHz, TA= -40°C to

+105°C, unless otherwise noted. Typical values are at V

AVDD

= V

DVDD

= VDD= 3.3V, TA= +25°C, fRF= 315MHz, unless otherwise

noted.) (100% tested at T

A

= +105°C.)

Note 2: BER = 2 x 10-3, Manchester coded, data rate = 4kbps. IF bandwidth = 400kHz.

LNA/MIXER

LNA Input Impedance Z

LO Signal Feedthrough to
Antenna

Voltage Gain Reduction Low-gain mode, AGC enabled 29 dB

LNA/Mixer Voltage Gain

3dB Cutoff Frequency BW

RSSI Linearity ±0.5 dB

RSSI Dynamic Range Includes AGC 80 dB

RSSI Level

Intermediate Frequency f

Maximum Data-Filter Bandwidth BW

Maximum Data-Slicer Bandwidth BW

Maximum Peak Detector
Bandwidth

Maximum Data Rate

Crystal Frequency f

Crystal Load Capacitance C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

INLNA

IF

IF

DF

DS

XTAL

LOAD

Normalized to 50Ω

High-gain LNA mode 55

Low-gain LNA mode 26

Set by capacitors on IFC1 and IFC2 (see
the Typical Application Circuit)

P

< -120dBm 1.34

RFIN

P

> 0dBm, AGC enabled 2.35

RFIN

Manchester coded 33

Nonreturn to zero (NRZ) 66

fRF = 315MHz

= 433MHz

f

RF

9.36 14.06 MHz

0.4 ­j5.6

0.4 ­j4.0

-75 dBm

400 kHz

200 kHz

50 kHz

100 kHz

50 kHz

10 pF

Ω

dB

V

kbps