MAXIM MAX7030 Technical data

General Description

The MAX7030 crystal-based, fractional-N transceiver is designed to transmit and receive ASK/OOK data at factory-preset carrier frequencies of 315MHz, 345MHz†, or

433.92MHz with data rates up to 33kbps (Manchester encoded) or 66kbps (NRZ encoded). This device generates a typical output power of +10dBm into a 50Ω load and exhibits typical sensitivity of -114dBm. The MAX7030 features separate transmit and receive pins (PAOUT and LNAIN) and provides an internal RF switch that can be used to connect the transmit and receive pins to a common antenna.

The MAX7030 transmit frequency is generated by a 16bit, fractional-N, phase-locked loop (PLL), while the receiver’s local oscillator (LO) is generated by an integer-N PLL. This hybrid architecture eliminates the need for separate transmit and receive crystal reference oscillators because the fractional-N PLL is preset to be

10.7MHz above the receive LO. Retaining the fixed-N PLL for the receiver avoids the higher current-drain requirements of a fractional-N PLL and keeps the receiver current drain as low as possible. All frequencygeneration components are integrated on-chip, and only a crystal, a 10.7MHz IF filter, and a few discrete components are required to implement a complete antenna/digital data solution.

The MAX7030 is available in a small, 5mm x 5mm, 32pin thin QFN package, and is specified to operate over the automotive -40°C to +125°C temperature range.

Applications

2-Way Remote Keyless Entry

Security Systems

Home Automation

Remote Controls

Remote Sensing

Smoke Alarms

Garage Door Openers

Local Telemetry Systems

Features

o +2.1V to +3.6V or +4.5V to +5.5V Single-Supply

Operation

o Single-Crystal Transceiver

o Factory-Preset Frequency (No Serial Interface

Required)

o ASK/OOK Modulation

o +10dBm Output Power into 50Ω Load

o Integrated TX/RX Switch

o Integrated Transmit and Receive PLL, VCO, and

Loop Filter

o > 45dB Image Rejection

o Typical RF Sensitivity*: -114dBm

o Selectable IF Bandwidth with External Filter

o < 12.5mA Transmit-Mode Current

o < 6.7mA Receive-Mode Current

o < 800nA Shutdown Current

o Fast-On Startup Feature, < 250µs

o Small, 32-Pin, Thin QFN Package

MAX7030

Low-Cost, 315MHz, 345MHz, and 433.92MHz

ASK Transceiver with Fractional-N PLL

________________________________________________________________

Maxim Integrated Products

Ordering Information

19-3706; Rev 3; 11/10

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.

Product Selector Guide

0.2% BER, 4kbps Manchester-encoded data, 280kHz IF BW

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

EP = Exposed pad. Note: The MAX7030 is available with factory-preset operating frequencies. See the

Product Selector Guide

for complete part

numbers.

Pin Configuration, Typical Application Circuit, and Functional Diagram appear at end of data sheet.

†

Contact factory for availability.

†

345

PART TEMP RANGE PIN-PACKAGE

MAX7030_ATJ+ -40°C to +125°C 32 Thin QFN-EP**

PART CARRIER FREQUENCY (MHz)

MAX7030LATJ+ 315

MAX7030MATJ+

MAX7030HATJ+ 433.92

MAX7030

Low-Cost, 315MHz, 345MHz, and 433.92MHz ASK Transceiver with Fractional-N PLL

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

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

PAVDD, AVDD, DVDD to GND..............................-0.3V to +4.0V

ENABLE, T/R, DATA, AGC0, AGC1,

AGC2 to GND .......................................-0.3V to (V

HVIN

+ 0.3V)

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

_VDD

+ 0.3V)

Continuous Power Dissipation (T

= +70°C) 32-Pin Thin QFN (derate 21.3mW/°C

above +70°C).............................................................1702mW

Operating Temperature Range .........................-40°C to +125°C

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

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

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

DC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

, 50Ω system impedance, V

AVDD

= V

DVDD

= V

HVIN

= V

PAVDD

= +2.1V to +3.6V, fRF= 315MHz, 345MHz, or

433.92MHz, T

= -40°C to +125°C, unless otherwise noted. Typical values are at V

AVDD

= V

DVDD

= V

HVIN

= V

PAVDD

= +2.7V,

= +25°C, unless otherwise noted.) (Note 1)

Supply Voltage (3V Mode) V

Supply Voltage (5V Mode) HVIN

Supply Current I

Voltage Regulator V

DIGITAL I/O

Input-High Threshold V

Input-Low Threshold V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

REG

HVIN, PAVDD, AVDD, and DVDD connected to power supply

PAVDD, AVDD, and DVDD unconnected from HVIN, but connected together

Transmit mode, PA off, V

DATA

cycle (Note 2)

Transmit mode, V at 50% duty cycle (Notes 3, 4)

Transmit mode, V at 100% duty cycle (Note 2)

TA < +85°C, typ at +25°C (Note 4)

TA < +125°C, typ at +125°C (Note 2)

HVIN

(Note 2)

at 0% duty

= 5V, I

DATA

= 15mA 3.0 V

LOAD

fRF = 315MHz 3.5 5.4

= 434MHz 4.3 6.7

fRF = 315MHz 7.6 12.3

= 434MHz 8.4 13.6

fRF = 315MHz 11.6 19.1

= 434MHz 12.4 20.4

Receiver 315MHz 6.1 7.9

Receiver 434MHz 6.4 8.3

Deep-sleep (3V mode)

Deep-sleep (5V mode)

Receiver 315MHz 6.4 8.2

Receiver 434MHz 6.7 8.4

Deep-sleep (3V mode)

Deep-sleep (5V mode)

2.1 2.7 3.6 V

4.5 5.0 5.5 V

0.9 x

HVIN

0.8 8.8

2.4 10.9

8.0 34.2

14.9 39.3

0.1 x

HVIN

µA

MAX7030

Low-Cost, 315MHz, 345MHz, and 433.92MHz

ASK Transceiver with Fractional-N PLL

_______________________________________________________________________________________ 3

AC ELECTRICAL CHARACTERISTICS

(

Typical Application Circuit

, 50Ω system impedance, V

PAVDD

= V

AVDD

= V

DVDD

= V

HVIN

= +2.1V to +3.6V, fRF= 315MHz, 345MHz, or

433.92MHz, T

= -40°C to +125°C, unless otherwise noted. Typical values are at V

PAVDD

= V

AVDD

= V

DVDD

= V

HVIN

= +2.7V,

= +25°C, unless otherwise noted.) (Note 1)

DC ELECTRICAL CHARACTERISTICS (continued)

(

Typical Application Circuit

, 50Ω system impedance, V

AVDD

= V

DVDD

= V

HVIN

= V

PAVDD

= +2.1V to +3.6V, fRF= 315MHz, 345MHz, or

433.92MHz, T

= -40°C to +125°C, unless otherwise noted. Typical values are at V

AVDD

= V

DVDD

= V

HVIN

= V

PAVDD

= +2.7V,

= +25°C, unless otherwise noted.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Pulldown Sink Current AGC 0- 2, E N ABLE , T/R, D ATA ( V

Output-Low Voltage V

Output-High Voltage V

= 500µA 0.15 V

SINK

SOURCE

= 500µA V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

GENERAL CHARACTERISTICS

Frequency Range

Maximum Input Level P

Transmit Efficiency 100% Duty Cycle

Transmit Efficiency 50% Duty Cycle

RFIN

fRF = 315MHz (Note 6) 32

fRF = 315MHz (Note 6) 24

ENABLE or T/R transition low to high, transmitter frequency settled to within 50kHz of the desired carrier

= 434MHz (Note 6) 30

= 434MHz (Note 6) 22

= 5.5V ) 20 µA

H V I N

- 0.26 V

H V IN

315/345/

433.92

0 dBm

200

MHz

ENABLE or T/R transition low to high,

Power-On Time t

transmitter frequency settled to within 5kHz

350

µs

of the desired carrier

ENABLE transition low to high, or T/R transition high to low, receiver startup time

250

(Note 5)

RECEIVER

Sensitivity

0.2% BER, 4kbps Manchester data rate, 280kHz IF BW, average RF power

315MHz -114

dBm

434MHz -113

Image Rejection 46 dB

POWER AMPLIFIER

TA = +25°C (Note 4) 4.6 10.0 15.5

Output Power P

OUT

TA = +125°C, V

= +2.1V (Note 2)

HVIN

TA = -40°C, V V

= +3.6V (Note 4)

HVIN

PAVDD

= V

AVDD

= V

DVDD

3.9 6.7

13.1 15.8

dBm

Modulation Depth 82 dB

Maximum Carrier Harmonics With output-matching network -40 dBc

Reference Spur -50 dBc

MAX7030

Low-Cost, 315MHz, 345MHz, and 433.92MHz ASK Transceiver with Fractional-N PLL

4 _______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS (continued)

(

Typical Application Circuit

, 50Ω system impedance, V

PAVDD

= V

AVDD

= V

DVDD

= V

HVIN

= +2.1V to +3.6V, fRF= 315MHz, 345MHz, or

433.92MHz, T

= -40°C to +125°C, unless otherwise noted. Typical values are at V

PAVDD

= V

AVDD

= V

DVDD

= V

HVIN

= +2.7V,

= +25°C, unless otherwise noted.) (Note 1)

PHASE-LOCKED LOOP

Transmit VCO Gain K

Transmit PLL Phase Noise

Receive VCO Gain 340 MHz/V

Receive PLL Phase Noise

Loop Bandwidth

Reference Frequency Input Level 0.5 V

LOW-NOISE AMPLIFIER/MIXER (Note 8)

LNA Input Impedance Z

Voltage-Conversion Gain

Input-Referred, 3rd-Order Intercept Point

Mixer-Output Impedance 330 Ω

LO Signal Feedthrough to Antenna

RSSI

Input Impedance 330 Ω

Operating Frequency f

3dB Bandwidth 10 MHz

Gain 15 mV/dB

ANALOG BASEBAND

Maximum Data-Filter Bandwidth 50 kHz

Maximum Data-Slicer Bandwidth 100 kHz

Maximum Peak-Detector Bandwidth

Maximum Data Rate

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

VCO

10kHz offset, 200kHz loop BW -68

1MHz offset, 200kHz loop BW -98

10kHz offset, 500kHz loop BW -80

1MHz offset, 500kHz loop BW -90

Transmit PLL 200

Receive PLL 500

INLNA

IIP3

Normalized to 50Ω

High-gain state

Low-gain state

High-gain state -42

Low-gain state -6

Manchester coded 33

Nonreturn to zero (NRZ) 66

fRF = 315MHz 1 - j4.7

fRF = 315MHz 50

fRF = 315MHz 13

= 434MHz 1- j3.3

= 434MHz 45

= 434MHz 9

340 MHz/V

-100 dBm

10.7 MHz

50 kHz

dBc/Hz

kHz

P-P

dBm

kbps

MAX7030

Low-Cost, 315MHz, 345MHz, and 433.92MHz

ASK Transceiver with Fractional-N PLL

_______________________________________________________________________________________ 5

AC ELECTRICAL CHARACTERISTICS (continued)

(

Typical Application Circuit

, 50Ω system impedance, V

PAVDD

= V

AVDD

= V

DVDD

= V

HVIN

= +2.1V to +3.6V, fRF= 315MHz, 345MHz, or

433.92MHz, T

= -40°C to +125°C, unless otherwise noted. Typical values are at V

PAVDD

= V

AVDD

= V

DVDD

= V

HVIN

= +2.7V,

= +25°C, unless otherwise noted.) (Note 1)

Note 1: Supply current, output power, and efficiency are greatly dependent on board layout and PAOUT match. Note 2: 100% tested at T

= +125°C. Guaranteed by design and characterization overtemperature.

Note 3: 50% duty cycle at 10kHz ASK data (Manchester coded). Note 4: Guaranteed by design and characterization. Not production tested. Note 5: Time for final signal detection; does not include baseband filter settling. Note 6: Efficiency = P

OUT

/(VDDx IDD).

Note 7: Dependent on PCB trace capacitance. Note 8: Input impedance is measured at the LNAIN pin. Note that the impedance at 315MHz includes the 12nH inductive degenera-

tion from the LNA source to ground. The impedance at 434MHz includes a 10nH inductive degeneration connected from the LNA source to ground. The equivalent input circuit is 50Ω in series with ~2.2pF. The voltage conversion is measured with the LNA input-matching inductor, the degeneration inductor, and the LNA/mixer tank in place, and does not include the IF filter insertion loss.

Typical Operating Characteristics

(

Typical Application Circuit

, V

PAVDD

= V

AVDD

= V

DVDD

= V

HVIN

= +3.0V, fRF= 433.92MHz, IF BW = 280kHz, 4kbps Manchester encod-

ed, 0.2% BER, T

= +25°C, unless otherwise noted.)

SUPPLY CURRENT vs. SUPPLY VOLTAGE

MAX7030 toc01

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

3.33.02.72.4

5.8

6.0

6.2

6.4

6.6

6.8

7.0

5.6

2.1 3.6

+85°C

+125°C

+25°C

-40°C

SUPPLY CURRENT vs. RF FREQUENCY

MAX7030 toc02

RF FREQUENCY (MHz)

SUPPLY CURRENT (mA)

425400325 350 375

6.1

6.2

6.3

6.4

6.5

6.6

6.7

6.8

6.0 300 450

+85°C

+125°C

+25°C

-40°C

DEEP-SLEEP CURRENT vs. TEMPERATURE

MAX7030 toc03

TEMPERATURE (°C)

DEEP-SLEEP CURRENT (µA)

1108535 60-10-15

-40

VCC = +3.6V

VCC = +3.0V

VCC = +2.1V

RECEIVER

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

CRYSTAL OSCILLATOR

Crystal Frequency f

Frequency Pulling by V

Crystal Load Capacitance (Note 7) 4.5 pF

XTAL

-10.7)

/24

MHz

2 ppm/V

MAX7030

Low-Cost, 315MHz, 345MHz, and 433.92MHz ASK Transceiver with Fractional-N PLL

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(

Typical Application Circuit

, V

PAVDD

= V

AVDD

= V

DVDD

= V

HVIN

= +3.0V, fRF= 433.92MHz, IF BW = 280kHz, 4kbps Manchester encod-

ed, 0.2% BER, T

= +25°C, unless otherwise noted.)

RECEIVER

BIT-ERROR RATE

vs. AVERAGE INPUT POWER

100

BIT-ERROR RATE (%)

0.2% BER

0.1

fRF = 315MHz

0.01

-121 -111 AVERAGE INPUT POWER (dBm)

fRF = 434MHz

-113-115-117-119

MAX7030 toc04

-102

-105

-108

-111

SENSITIVITY (dBm)

-114

-117

-120

SENSITIVITY vs. TEMPERATURE

fRF = 434MHz

fRF = 315MHz

-40 TEMPERATURE (°C)

1.8

RSSI vs. RF INPUT POWER

1.6

MAX7030 toc05

1.4

HIGH-GAIN MODE

1.2

1.0

RSSI (V)

0.8

0.6

0.4

0.2 AGC HYSTERESIS: 3dB

11085603510-15

-130 10

LOW-GAIN MODE

RF INPUT POWER (dBm)

AGC SWITCH POINT

-10-30-70 -50-90-110

MAX7030 toc06

RSSI AND DELTA vs. IF INPUT POWER

2.1

1.8

1.5

1.2

RSSI (V)

0.9

0.6

0.3

-90 10

RSSI

IF INPUT POWER (dBm)

NORMALIZED IF GAIN vs. IF FREQUENCY

-4

-8

-12

NORMALIZED IF GAIN (dB)

-16

MAX7030 toc07

DELTA

-10-30-50-70

3.5

2.5

1.5

0.5

-0.5

-1.5

-2.5

-3.5

MAX7030 toc10

DELTA (%)

SYSTEM GAIN (dBm)

-10

-20 030

-6

-12

S11 (dB)

-18

SYSTEM GAIN vs. IF FREQUENCY

UPPER SIDEBAND

48dB IMAGE

REJECTION

IF FREQUENCY (MHz)

FROM RFIN

TO MIXOUT

= 434MHz

LOWER SIDEBAND

252015105

S11 vs. RF FREQUENCY

433.92MHz

MAX7030 toc08

IMAGE REJECTION (dB)

-40

MAX7030 toc11

IMAGE REJECTION vs. TEMPERATURE

fRF = 433MHz

fRF = 315MHz

11085603510-15

TEMPERATURE (°C)

S11 SMITH PLOT OF R

433MHz

400MHz

FIN

500MHz

MAX7030 toc09

MAX7030 toc12

-20 1100

IF FREQUENCY (MHz)

-24 200 500

RF FREQUENCY (MHz)

450400350300250

+ 14 hidden pages

MAXIM MAX7030 Technical data

Specifications and Main Features

Frequently Asked Questions

User Manual