Rainbow Electronics MAX7032 User Manual

General Description

The MAX7032 crystal-based, fractional-N transceiver is designed to transmit and receive ASK/OOK or FSK data in the 300MHz to 450MHz frequency range 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 sensitivities of -114dBm for ASK data and -110dBm for FSK data. The MAX7032 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 MAX7032 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 allows the transmit frequency to be set within 2kHz of the receive frequency. The 12-bit resolution of the fractional-N PLL allows frequency multiplication of the crystal frequency in steps of f

XTAL

/ 4096. 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.

The fractional-N architecture of the MAX7032 transmit PLL allows the transmit FSK signal to be programmed for exact frequency deviations, and completely eliminates the problems associated with oscillator-pulling FSK signal generation. All frequency-generation 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 MAX7032 is available in a small 5mm x 5mm, 32-pin, thin QFN package, and is specified to operate in 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

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

Operation

♦ Single Crystal Transceiver

♦ User-Adjustable 300MHz to 450MHz Carrier

Frequency

♦ ASK/OOK and FSK Modulation

♦ User-Adjustable FSK Frequency Deviation

Through Fractional-N PLL Register

♦ Agile Transmitter Frequency Synthesizer with

f

XTAL

/ 4096 Carrier-Frequency Spacing

♦ +10dBm Output Power into 50Ω Load

♦ Integrated TX/RX Switch

♦ Integrated Transmit and Receive PLL, VCO, and

Loop Filter

♦ > 45dB Image Rejection

♦ Typical RF Sensitivity*

ASK: -114dBm FSK: -110dBm

♦ Selectable IF Bandwidth with External Filter

♦ RSSI Output with High Dynamic Range

♦ Autopolling Low-Power Management

♦ < 12.5mA Transmit-Mode Current

♦ < 6.7mA Receive-Mode Current

♦ < 23.5µA Polling-Mode Current

♦ < 800nA Shutdown Current

♦ Fast-On Startup Feature, < 250µs

♦ Small 32-Pin, Thin QFN Package

MAX7032

Low-Cost, Crystal-Based, Programmable,

ASK/FSK Transceiver with Fractional-N PLL

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-3685; Rev 0; 5/05

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.

*0.2% BER, 4kbps Manchester-encoded data, 280kHz IF BW, average RF power

**EP = Exposed paddle.

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

PART TEMP RANGE PIN-PACKAGE

MAX7032ATJ -40°C to +125°C 32 Thin QFN-EP** T3255-3

PKG

CODE

MAX7032

Low-Cost, Crystal-Based, Programmable, ASK/FSK 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.

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

PAV

DD

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

ENABLE, T/R, DATA, CS, DIO, SCLK, CLKOUT to

GND ......................................................-0.3V to (HV

IN

+ 0.3V)

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

DD

+ 0.3V)

Continuous Power Dissipation (T

A

= +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

DC ELECTRICAL CHARACTERISTICS

(Typical Application Circuit, 50Ω system impedance, AVDD= DVDD= P

AVDD

= HVIN= +2.1V to +3.6V, fRF= 300MHz to 450MHz, TA=

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

DD

= DVDD= PAV

DD

= HVIN= +2.7V, TA= +25°C, unless otherwise

noted.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage (3V Mode) V

Supply Voltage (5V Mode) HV

Supply Current I

Voltage Regulator V

DD

REG

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

PAVDD, AVDD, and DVDD unconnected from HVIN,

IN

but connected together

Transmit mode, PA off, V

at 0% duty cycle

DATA

(ASK) (Note 2)

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

Transmit mode, V at 100% duty cycle (FSK)

TA < +85°C, typ at +25°C (Note 4)

TA < +125°C typ at +125°C (Note 2)

HVIN = 5V, I

LOAD

DATA

= 15mA 3.0 V

fRF = 315MHz

= 434MHz

f

RF

fRF = 315MHz

= 434MHz

f

RF

fRF = 315MHz (Note 4)

f

= 434MHz (Note 2)

RF

Receiver (ASK 315MHz)

Receiver (ASK 434MHz) 6.4 8.3

Receiver (FSK 315MHz) 6.4 8.4

Receiver (FSK 434MHz) 6.7 8.7

DRX (3V mode) 23.4 77.3

DRX (5V mode) 67.2 94.4

Deep-sleep (3V mode) 0.8 8.8

Deep-sleep (5V mode) 2.4 10.9

Receiver (ASK 315MHz)

Receiver (ASK 434MHz) 6.7 8.4

Receiver (FSK 315MHz) 6.8 8.7

Receiver (FSK 434MHz) 7.0 8.8

DRX (3V mode) 33.5 103.0

DRX (5V mode) 82.3 116.1

Deep-sleep (3V mode) 8.0 34.2

Deep-sleep (5V mode) 14.9 39.3

2.1 2.7 3.6 V

4.5 5.0 5.5 V

3.5 5.4

4.3 6.7

7.6 12.3

8.4 13.6

11.6 19.1

12.4 20.4

6.1 7.9

6.4 8.2

mA

µA

mA

µA

MAX7032

Low-Cost, Crystal-Based, Programmable,

ASK/FSK Transceiver with Fractional-N PLL

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(Typical Application Circuit, 50Ω system impedance, AVDD= DVDD= P

AVDD

= HVIN= +2.1V to +3.6V, fRF= 300MHz to 450MHz, TA=

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

DD

= DVDD= PAV

DD

= HVIN= +2.7V, TA= +25°C, unless otherwise

noted.) (Note 1)

AC ELECTRICAL CHARACTERISTICS

(Typical Application Circuit, 50Ω system impedance, AVDD= DVDD= PAVDD= HVIN= +2.1V to +3.6V, fRF= 300MHz to 450MHz, TA=

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

DD

= AVDD= DVDD= HVIN= +2.7V, TA= +25°C, unless otherwise

noted.) (Note 1)

DIGITAL I/O

Input High Threshold V

Input Low Threshold V Pulldown Sink Current SCLK, ENABLE, T/R, DATA (HVIN = 5.5V) 20 µA Pullup Source Current DIO, CS (HVIN = 5.5V) 20 µA

Output-Low Voltage V

Output-High Voltage V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

(Note 2) 0.9 x HV

IH

(Note 2) 0.1 x HV

IL

I

OL

OH

= 500µA 0.15 V

SINK

I

SOURCE

= 500µA

IN

HV

-

IN

0.26

V

IN

V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

GENERAL CHARACTERISTICS

Frequency Range 300 450 MHz

Maximum Input Level P

Transmit Efficiency 100% Duty Cycle

Transmit Efficiency 50% Duty Cycle

RFIN

fRF = 315MHz (Note 6) 32

= 434MHz (Note 6) 30

f

RF

fRF = 315MHz (Note 6) 24

= 434MHz (Note 6) 22

f

RF

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

0dBm

200

%

ENABLE or T/R transition low to high,

Power-On Time t

RECEIVER

Sensitivity

Image Rejection (Note 8) 46 dB

ON

transmitter frequency settled to within 5kHz of the desired carrier

ENABLE transition low to high, or T/R transition high to low receiver startup time (Note 5)

0.2% BER, 4kbps Manchester data rate, 280kHz IF BW, ±50kHz FSK deviation, average power

ASK (315MHz) -114

ASK (434MHz) -113

FSK (315MHz) -110

FSK (434MHz) -107

350

250

µs

dBm

MAX7032

Low-Cost, Crystal-Based, Programmable, ASK/FSK Transceiver with Fractional-N PLL

4 _______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS (continued)

(Typical Application Circuit, 50Ω system impedance, AVDD= DVDD= PAVDD= HVIN= +2.1V to +3.6V, fRF= 300MHz to 450MHz, TA=

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

DD

= AVDD= DVDD= HVIN= +2.7V, TA= +25°C, unless otherwise

noted.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

POWER AMPLIFIER

TA = +25°C (Note 4) 4.6 10.0 15.5

Output Power P

Modulation Depth 82 dB

Maximum Carrier Harmonics With output-matching network -40 dBc

Reference Spur -50 dBc

PHASE-LOCKED LOOP

Transmit VCO Gain K

Transmit PLL Phase Noise

Receive VCO Gain 340 MHz/V

Receive PLL Phase Noise

Loop Bandwidth

Minimum Transmit Frequency Step

Reference Frequency Input Level 0.5 V

Programmable Divider Range In transmit mode (Note 4) 20 27

LOW-NOISE AMPLIFIER/MIXER (Note 9)

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

OUT

VCO

INLNA

IIP3

IF

TA = +125°C, AVDD = DVDD = HVIN =

= +2.1V (Note 2)

PAV

DD

TA = -40°C, AVDD = DVDD = HVIN =

= +3.6V (Note 4)

PAV

DD

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

Normalized to 50Ω

High-gain state

Low-gain state

High-gain state -42

Low-gain state -6

3.9 6.7

13.1 15.8

340 MHz/V

f

/

XTAL

4096

fRF = 315MHz 1 - j4.7

f

= 434MHz 1 - j3.3

RF

fRF = 315MHz 50

= 434MHz 45

f

RF

fRF = 315MHz 13

= 434MHz 9

f

RF

-100 dBm

10.7 MHz

dBm

dBc/Hz

kHz

P-P

dB

dBm

MAX7032

Low-Cost, Crystal-Based, Programmable,

ASK/FSK Transceiver with Fractional-N PLL

_______________________________________________________________________________________ 5

AC ELECTRICAL CHARACTERISTICS (continued)

(Typical Application Circuit, 50Ω system impedance, AVDD= DVDD= PAVDD= HVIN= +2.1V to +3.6V, fRF= 300MHz to 450MHz, TA=

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

DD

= AVDD= DVDD= HVIN= +2.7V, TA= +25°C, unless otherwise

noted.) (Note 1)

Gain 15 mV/dB

FSK DEMODULATOR

Conversion Gain 2.0 mV/kHz

ANALOG BASEBAND

Maximum Data Filter Bandwidth 50 kHz

Maximum Data Slicer Bandwidth 100 kHz

Maximum Peak Detector Bandwidth

Maximum Data Rate

CRYSTAL OSCILLATOR

Crystal Frequency f

Maximum Crystal Inductance 50 mH

Frequency Pulling by V

Crystal Load Capacitance (Note 7) 4.5 pF

SERIAL INTERFACE TIMING CHARACTERISTICS (see Figure 7)

Minimum SCLK Setup to Falling Edge of CS

Minimum CS Falling Edge to SCLK Rising-Edge Setup Time

Minimum CS Idle Time t Minimum CS Period t

Maximum SCLK Falling Edge to Data Valid Delay

Minimum Data Valid to SCLK Rising-Edge Setup Time

Minimum Data Valid to SCLK Rising-Edge Hold Time

Minimum SCLK High Pulse Width t

Minimum SCLK Low Pulse Width t Minimum CS Rising Edge to

SCLK Rising-Edge Hold Time

Maximum CS Falling Edge to Output Enable Time

Maximum CS Rising Edge to Output Disable Time

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Manchester coded 33

NRZ 66

XTAL

DD

t

SC

t

CSS

CSI

CS

t

DO

t

DS

t

DH

CH

CL

t

CSH

t

DV

t

TR

50 kHz

(fRF - 10.7)

/ 24

2 ppm/V

30 ns

125 ns

2.125 µs

80 ns

30 ns

100 ns

30 ns

25 ns

kbps

MHz

MAX7032

Low-Cost, Crystal-Based, Programmable, ASK/FSK Transceiver with Fractional-N PLL

6 _______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS (continued)

(Typical Application Circuit, 50Ω system impedance, AVDD= DVDD= PAVDD= HVIN= +2.1V to +3.6V, fRF= 300MHz to 450MHz, TA=

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

DD

= AVDD= DVDD= HVIN= +2.7V, TA= +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

A

= +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 PC board trace capacitance. Note 8: The oscillator register (0x05) is set to the nearest integer result of f

XTAL

/ 100kHz (see the Oscillator Frequency Register sec-

tion).

Note 9: 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 approximately 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 Operating Circuit, PAVDD= AVDD= DVDD= HVIN= +3.0V, fRF= 433.92MHz, TA= +25°C, IF BW = 280kHz, data rate = 4kbps Manchester encoded, frequency deviation = ±50kHz, BER = 0.2% average RF power, unless otherwise noted.)

SUPPLY CURRENT vs. SUPPLY VOLTAGE

(ASK MODE)

MAX7032 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

TA = +85°C

TA = +125°C

TA = +25°C

TA = -40°C

SUPPLY CURRENT vs. RF FREQUENCY

(ASK MODE)

MAX7032 toc02a

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

TA = +85°C

TA = +125°C

TA = +25°C

TA = -40°C

SUPPLY CURRENT vs. RF FREQUENCY

(FSK MODE)

MAX7032 toc02b

RF FREQUENCY (MHz)

SUPPLY CURRENT (mA)

425400325 350 375

6.5

6.6

6.7

6.8

6.9

7.0

6.4 300 450

TA = +85°C

TA = +125°C

TA = +25°C

TA = -40°C

RECEIVER

MAX7032

Low-Cost, Crystal-Based, Programmable,

ASK/FSK Transceiver with Fractional-N PLL

_______________________________________________________________________________________ 7

Typical Operating Characteristics (continued)

(Typical Operating Circuit, PAVDD= AVDD= DVDD= HVIN= +3.0V, fRF= 433.92MHz, TA= +25°C, IF BW = 280kHz, data rate = 4kbps Manchester encoded, frequency deviation = ±50kHz, BER = 0.2% average RF power, unless otherwise noted.)

RECEIVER

DEEP-SLEEP CURRENT vs. TEMPERATURE

18

16

14

12

10

8

6

DEEP-SLEEP CURRENT (µA)

4

2

0

-40

TEMPERATURE (°C)

VCC = +3.6V

VCC = +3.0V

VCC = +2.1V

SENSITIVITY vs. TEMPERATURE

(ASK DATA)

-102

-105

-108

-111

SENSITIVITY (dBm)

-114

-117

-120

fRF = 434MHz

fRF = 315MHz

TEMPERATURE (°C)

RSSI vs. RF INPUT POWER

1.8

1.6

1.4

HIGH-GAIN MODE

1.2

1.0

RSSI (V)

0.8

0.6

0.4

0.2 AGC HYSTERESIS: 3dB

0

-130 10

MAX7032 toc03

1108535 60-10-15

MAX7032 toc06

11085603510-15-40

AGC SWITCH POINT

LOW-GAIN MODE

RF INPUT POWER (dBm)

vs. AVERAGE INPUT POWER (ASK DATA)

BIT-ERROR RATE

100

10

fRF = 434MHz

1

BIT-ERROR RATE (%)

0.2% BER

0.1

fRF = 315MHz

0.01

-121 -111 AVERAGE INPUT POWER (dBm)

SENSITIVITY vs. TEMPERATURE

(FSK DATA)

-100

-102

-104

-106

SENSITIVITY (dBm)

-108

-110

-112

fRF = 434MHz

fRF = 315MHz

TEMPERATURE (°C)

RSSI AND DELTA vs. IF INPUT POWER

2.1

MAX7032 toc09

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

1.8

1.5

1.2

RSSI (V)

0.9

0.6

0.3

0

-90 10

-113-115-117-119

11085603510-15-40

vs. AVERAGE INPUT POWER (FSK DATA)

100

MAX7030 toc04

10

1

BIT-ERROR RATE (%)

0.1

0.01

-116 -104

SENSITIVITY vs. FREQUENCY DEVIATION

-94

-96

MAX7032 toc07

-98

-100

-102

SENSITIVITY (dBm)

-104

-106

-108 1 100

RSSI

IF INPUT POWER (dBm)

BIT-ERROR RATE

0.2% BER

fRF = 315MHz

AVERAGE INPUT POWER (dBm)

(FSK DATA)

10

FREQUENCY DEVIATION (kHz)

MAX7032 toc10

DELTA

-10-30-50-70

3.5

2.5

1.5

0.5

-0.5

-1.5

-2.5

-3.5

fRF = 434MHz

-108 -106-110-112-114

DELTA (%)

MAX7032 toc05

MAX7032 toc08

MAX7032

Low-Cost, Crystal-Based, Programmable, ASK/FSK Transceiver with Fractional-N PLL

8 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(Typical Operating Circuit, PAVDD= AVDD= DVDD= HVIN= +3.0V, fRF= 433.92MHz, TA= +25°C, IF BW = 280kHz, data rate = 4kbps Manchester encoded, frequency deviation = ±50kHz, BER = 0.2% average RF power, unless otherwise noted.)

RECEIVER

FSK DEMODULATOR OUTPUT

vs. IF FREQUENCY

1.6

1.2

0.8

0.4

FSK DEMODULATOR OUTPUT (V)

MAX7032 toc11

SYSTEM GAIN (dBm)

50

40

30

20

10

0

-10

SYSTEM GAIN vs. IF FREQUENCY

UPPER SIDEBAND

48dB IMAGE

REJECTION

FROM RFIN TO MIXOUT

= 434MHz

f

RF

LOWER SIDEBAND

48

MAX7032 toc12

46

44

IMAGE REJECTION (dB)

IMAGE REJECTION vs. TEMPERATURE

fRF = 434MHz

fRF = 315MHz

MAX7032 toc13

0

10.4 11.0 IF FREQUENCY (MHz)

NORMALIZED IF GAIN vs. IF FREQUENCY

0

-4

-8

-12

NORMALIZED IF GAIN (dB)

-16

-20 1 100

10

IF FREQUENCY (MHz)

vs. INDUCTIVE DEGENERATION

90

fRF = 315MHz

80

IMAGINARY

70

IMPEDANCE

60

10.910.810.710.610.5

MAX7032 toc14

INPUT IMPEDANCE

-20 030

IF FREQUENCY (MHz)

252015105

S11 vs. RF FREQUENCY

0

-6

-12

S11 (dB)

-18

-24 200 500

433.92MHz

450400350300250

RF FREQUENCY (MHz)

42

S11 SMITH PLOT OF RFIN

MAX7032 toc15

434MHz

INPUT IMPEDANCE

MAX7032 toc17

-220

-230

-240

-250

vs. INDUCTIVE DEGENERATION

90

80

70

60

fRF = 434MHz

IMAGINARY

IMPEDANCE

TEMPERATURE (

400MHz

MAX7032 toc18

-150

-160

-170

-180

11085603510-15-40

°C)

MAX7032 toc16

500MHz

50

REAL IMPEDANCE (Ω)

40

30

20

1 100

INDUCTIVE DEGENERATION (nH)

REAL IMPEDANCE

10

-260

-270

-280

-290

IMAGINARY IMPEDANCE (Ω)

50

REAL IMPEDANCE (Ω)

40

30

20

1 100

REAL IMPEDANCE

10

INDUCTIVE DEGENERATION (nH)

-190

-200

-210

-220

IMAGINARY IMPEDANCE (Ω)

MAX7032

Low-Cost, Crystal-Based, Programmable,

ASK/FSK Transceiver with Fractional-N PLL

_______________________________________________________________________________________ 9

Typical Operating Characteristics (continued)

(Typical Operating Circuit, PAVDD= AVDD= DVDD= HVIN= +3.0V, fRF= 433.92MHz, TA= +25°C, IF BW = 280kHz, data rate = 4kbps Manchester encoded, frequency deviation = ±50kHz, BER = 0.2% average RF power, unless otherwise noted.)

RECEIVER

TRANSMITTER

PHASE NOISE vs. OFFSET FREQUENCY

-50

-60

-70

-80

-90

PHASE NOISE (dBc/Hz)

-100

-110

-120 100 10M

OFFSET FREQUENCY (Hz)

fRF = 315MHz

MAX7032 toc19

1M100k10k1k

PHASE NOISE vs. OFFSET FREQUENCY

-50

-60

-70

-80

-90

PHASE NOISE (dBc/Hz)

-100

-110

-120 100 10M

OFFSET FREQUENCY (Hz)

fRF = 434MHz

MAX7032 toc20

1M100k10k1k

SUPPLY CURRENT vs. SUPPLY VOLTAGE

16

fRF = 315MHz PA ON WITHOUT ENVELOPE SHAPING

14

TA = +125°C

12

SUPPLY CURRENT (mA)

10

8

2.1 3.6

TA = +85°C

TA = +25°C

SUPPLY VOLTAGE (V)

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

6.0 fRF = 434MHz

PA OFF

5.5

5.0

TA = +85°C

4.5

4.0

SUPPLY CURRENT (mA)

3.5

3.0

TA = +125°C

TA = -40°C

SUPPLY VOLTAGE (V)

TA = -40°C

3.33.02.72.4

TA = +25°C

3.33.02.72.42.1 3.6

6.0

5.5

MAX7032 toc21

5.0

4.5

4.0

3.5

SUPPLY CURRENT (mA)

3.0

2.5

2.0

12

11

MAX7032 toc24

10

9

8

7

SUPPLY CURRENT (mA)

6

5

4

-14 10

SUPPLY CURRENT vs. OUTPUT POWER

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

fRF = 315MHz PA OFF

TA = +125°C

TA = +85°C

TA = +25°C

SUPPLY VOLTAGE (V)

fRF = 315MHz ENVELOPE SHAPING ENABLED

PA ON

50% DUTY CYCLE

AVERAGE OUTPUT POWER (dBm)

TA = -40°C

3.33.02.72.42.1 3.6

62-10 -6 -2

17

MAX7032 toc22

MAX7032 toc25

15

13

SUPPLY CURRENT (mA)

11

14

13

12

11

10

SUPPLY CURRENT (mA)

SUPPLY CURRENT vs. SUPPLY VOLTAGE

fRF = 434MHz PA ON WITHOUT ENVELOPE SHAPING

TA = +85°C

TA = +125°C

TA = +25°C

9

2.1 3.6 SUPPLY VOLTAGE (V)

TA = -40°C

3.33.02.72.4

SUPPLY CURRENT vs. OUTPUT POWER

fRF = 434MHz ENVELOPE SHAPING ENABLED

9

8

7

6

5

-14 10

PA ON

50% DUTY CYCLE

62-2-6-10

AVERAGE OUTPUT POWER (dBm)

MAX7032 toc23

MAX7032 toc26

MAX7032

Low-Cost, Crystal-Based, Programmable, ASK/FSK Transceiver with Fractional-N PLL

10 ______________________________________________________________________________________

Typical Operating Characteristics (continued)

(Typical Operating Circuit, PAVDD= AVDD= DVDD= HVIN= +3.0V, fRF= 433.92MHz, TA= +25°C, IF BW = 280kHz, data rate = 4kbps Manchester encoded, frequency deviation = ±50kHz, BER = 0.2% average RF power, unless otherwise noted.)

TRANSMITTER

SUPPLY CURRENT AND OUTPUT POWER

18

16

14

12

10

8

SUPPLY CURRENT (mA)

6

4

2

0.1 10k

OUTPUT POWER vs. SUPPLY VOLTAGE

14

fRF = 315MHz PA ON ENVELOPE SHAPING DISABLED

12

10

8

OUTPUT POWER (dBm)

6

TA = -40°C

TA = +25°C

TA = +125°C

TA = +85°C

vs. EXTERNAL RESISTOR

CURRENT

fRF = 315MHz PA ON

EXTERNAL RESISTOR (Ω)

POWER

MAX7032 toc27-1

1k1001 10

14

MAX7032 28-1

12

10

8

OUTPUT POWER (dBm)

6

16

12

8

4

0

-4 OUTPUT POWER (dBm)

-8

-12

-16

SUPPLY CURRENT AND OUTPUT POWER

18

16

14

12

10

8

SUPPLY CURRENT (mA)

6

4

fRF = 434MHz PA ON

2

0.1 10k

OUTPUT POWER vs. SUPPLY VOLTAGE

fRF = 315MHz PA ON ENVELOPE SHAPING ENABLED

TA = -40°C

TA = +25°C

TA = +125°C

TA = +85°C

vs. EXTERNAL RESISTOR

POWER

CURENT

EXTERNAL RESISTOR (Ω)

OUTPUT POWER vs. SUPPLY VOLTAGE

14

fRF = 434MHz PA ON

MAX7032 28-2

ENVELOPE SHAPING DISABLED

12

10

8

OUTPUT POWER (dBm)

6

TA = -40°C

TA = +25°C

TA = +85°C

MAX7032 toc27-2

1k1001 10

TA = +125°C

16

12

8

4

0

-4 OUTPUT POWER (dBm)

-8

-12

-16

MAX7032 29-1

4

2.1 3.6 SUPPLY VOLTAGE (V)

OUTPUT POWER vs. SUPPLY VOLTAGE

14

fRF = 434MHz PA ON ENVELOPE SHAPING ENABLED

12

10

OUTPUT POWER (dBm)

8

6

2.1 3.6

TA = -40°C

TA = +25°C

TA = +125°C

TA = +85°C

SUPPLY VOLTAGE (V)

4

3.33.02.72.4

2.1 3.6 SUPPLY VOLTAGE (V)

3.33.02.72.4

EFFICIENCY vs. SUPPLY VOLTAGE

40

fRF = 315MHz

MAX7032 29-2

3.33.02.72.4

PA ON

35

30

EFFICIENCY (%)

25

20

2.1 3.6 SUPPLY VOLTAGE (V)

TA = -40°C

MAX7032 toc30

TA = +25°C

TA = +85°C

TA = +125°C

3.33.02.72.4

4

2.1 3.6 SUPPLY VOLTAGE (V)

EFFICIENCY vs. SUPPLY VOLTAGE

40

fRF = 434MHz PA ON

35

30

EFFICIENCY (%)

25

20

2.1 3.6 SUPPLY VOLTAGE (V)

3.33.02.72.4

TA = -40°C

TA = +25°C

TA = +85°C

TA = +125°C

3.33.02.72.4

MAX7032 toc31