Analog Devices AD6190ARSRL, AD6190ARS Datasheet

a

900 MHz RF Transceiver

AD6190

FEATURES

Complete 900 MHz RF Transceiver LNA

Receive Mixer

Transmit Mixer

Driver Amplifier VCO

Prescaler

Limiter Amplifier with RSSI On-Chip Low Dropout Regulator Independent Sleep Modes for TX, RX 28-Lead SSOP Package

APPLICATIONS

902 MHz–928 MHz ISM Band Cordless Telephones

902 MHz–928 MHz ISM Band Wireless Data Systems

GENERAL DESCRIPTION

The AD6190 900 MHz RF Transceiver provides a complete RF/IF section for systems operating in the 902 MHz–928 MHz license-free ISM band. The high level of integration allows several dozen discrete components to be replaced. It is ideally suited for use in cordless telephone and wireless data applications.

The receiver section includes a Low Noise Amplifier (LNA). The LNA’s output drives an image-reject mixer; the mixer’s output optimized for 10.7 MHz is filtered and processed by the limiting IF amplifier.

The transmit section accepts a modulated 10.7 MHz IF input, and uses an image-reject upconverter to mix the signal up to the 902 MHz–928 MHz RF carrier frequency while suppressing the unwanted image and LO components. The RF output is raised to a nominal 0.5 milliwatt (–3 dBm) output level. This output can be used directly or can drive an external power amplifier to higher levels.

The on-chip VCO operates at 2× the local oscillator frequency. This reduces oscillator pulling due to strong interferers in-band or transmitter leakage. An on-chip 64/65 prescaler allows the VCO to be controlled by a low cost 15 MHz CMOS synthesizer.

An on-chip low dropout regulator minimizes VCO pushing. The transmit section, receive section, or both, can be placed in a low current SLEEP mode when not in use. The AD6190 900 MHz RF transceiver is packaged in a 28-lead SSOP package.

The AD6190 900 MHz RF Transceiver is part of the Analog Devices/Zilog “A-to-Z Phone” Spread-Spectrum System for cordless telephone and data communications applications. Contact Zilog directly at [phone] for more information on the Z87000 series baseband controller chips.

	FUNCTIONAL BLOCK DIAGRAM
		10.7	10.7
				RSSI
ANT		0		LIMOUT
FILTER		90
	VREG
		AD6190
T/R				TXON
S/W	VCO
			POWER		Z87L00
				RXON
		MANAGEMENT			SPREAD-
	/2		AND	VCOON	SPECTRUM
PA	I	Q	CONTROL		CONTROLLER
	64/65		VOLTAGE	VBATT
		REGULATOR		VREG
		0		10.7
		90
	15MHz SYNTHESIZER

REV. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: [phone]	World Wide Web Site: http://www.analog.com
Fax: [phone]	© Analog Devices, Inc., 1998

	(@ TA = +258C, VCC = +3.3 V, FIF = 10.7 MHz, FRF = 902 MHz–928 MHz, TX IF Input
AD6190–SPECIFICATIONS level 137 mV p-p, unless otherwise noted)
Parameter	Conditions	Min	Typ	Max	Units
RECEIVE RF SECTION	Source Z = 50 Ω, IF Load Z = 330 Ω
(LNA to Mixer Output)
Power Gain			24		dB
Noise Figure			4.2		dB
1 dB Compression (Input)			–30		dBm
Input IP3			–17		dBm
Image Rejection	FRF = 915 MHz, FLO = 904.3 MHz	28	33		dBc
TRANSMIT UPCONVERTER	FIF = 10.7 MHz, FLO = 904.3 MHz	35	48		dBc
Image Rejection
LO Feedthrough	FIF = 10.7 MHz, FLO = 904.3 MHz		–33		dBm
DRIVER AMPLIFIER
Nominal Output Power	For IF Input Level = 137 mV p-p		–3		dBm
1 dB Compression		0	+4.5		dBm
VCO	(LO Frequency ×2)
Operating Frequency		1783		1835	MHz
PRESCALER
Division Ratio
PREMOD = “1”			64
PREMOD = “0”			65
Output Level	RL = 2.2 k, CL < 10 pF	0.55	1.0		V p-p
IF LIMITER AMPLIFIER
First Stage Gain			24		dB
Second Stage Gain	RL > 30 kΩ, CL < 30 pF		70		dB
AC Output Level			450		mV p-p
DC Level			1.76		V
IF Port Impedance	FIF = 10.7 MHz		330		Ω
RSSI OUTPUT	With 10 Ω in Series with VCCIF
Slope			22		mV/dB
Output Voltage	@ –100 dBm RF Input		0.90		V
	@ –30 dBm RF Input		2.40		V
Linear Range	(With Respect to RF Input Level)		70		dB
RSSI Log Conformance Error			±2		dB
SUPPLY CURRENT	(VCC = 3.3 V)
Transmit Mode	TXON, VCOON = 1; RXON = 0		93		mA
Receive Mode	RXON, VCOON = 1; TXON = 0		59		mA
Sleep Mode	TXON, VCOON, RXON = 0		270		μA
SUPPLY VOLTAGE	VBATT	3.0		4.6	V
Other Supplies	VCCTX, VCCIF, VCCLNA	3.0	3.3	3.6	V
VCO REGULATOR	Output Voltage, 3.0 < VBATT < 4.6 V	2.65		2.85	V
TEMPERATURE RANGE		–20		+85	°C

Specifications subject to change without notice.

–2–

REV. 0

AD6190

ABSOLUTE MAXIMUM RATINGS1

Supply Voltage

VBATT, VCCIF, LNAVCC, VCCTX to GND . . . . +5.5 V Maximum RF Input Level Without Damage . . . . . . . +20 dBm Internal Power Dissipation2 . . . . . . . . . . . . . . . . . . . . 500 mW Operating Temperature Range . . . . . . . . . . . –25°C to +85°C Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C Lead Temperature Range

(Soldering, 60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C

NOTES

1Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

2Thermal Characteristics: 28-lead SSOP package θJA = 122°C/W.

	ORDERING GUIDE
Model	Package Description	Package Option
AD6190ARS	28-Lead Shrink Small Outline	RS-28
AD6190ARSRL	28-Lead Shrink Small Outline, Supplied on Reels, 1500 Units per Reel

Minimum order quantity 25,000 units.

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD6190 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE

82pF

MODULUS CONTROL

TXON

VCOON

AD6190

1nF

PRESCALER

1.96kV

VCCTX

64/65

82pF

82pF

10nF

1

OUT

R3

(3.3VDC)

51.1V

82pF

2

VCC DRIVER

82pF

82pF

10nF

VBATT

3

REG

8.2nH

(3.3VDC)

(3.0-4.5VDC)

0.1mF

220V

4

TRANSMIT

Q1

RF OUT

39V

15nH

L1

2.2pF

5

TUNE

10V

15nH

C1

IN

6

42

LIMITER OUT

VOLTAGE IN

82pF

D1L2

39V

15nH

7

0.1mF

82pF

VCCLNA

8

220V

82pF

100nF

(3.3VDC)

RSSI OUT

10nF

82pF

9

15nH

2.75 VDC

LNA IN

10

2.2pF

0.1mF

82pF

82pF

TRANSMIT

82pF

11

IF

301V

VCC MIXER

IN

54.9V

12

RSSI

6.8pF

6.8mH

82pF 10V

100nF

39V (3.3VDC)

1kV

(TDK2012)

RXON

F1

13

14

F1

27pF

U1

82pF

VCCIF

10nF

100nF

82pF

10V

(3.3VDC)

Figure 1.

Test Circuit

REV. 0

–3–