Datasheet SL6619 Datasheet (MITEL)

SL6619

Direct Conversion FSK Data Receiver

Preliminary Information

Supersedes July 1996 version, DS3853 - 3.5 DS3853 - 4.1 April 1998

The SL6619 is an advanced Direct Conversion FSK Data Receiver for operation up to 450 MHz. The device integrates all functions to convert a binary FSK modulated RF signal into a demodulated data stream.

Adjacent channel rejection is provided using tuneable gyrator filters. RF and audio AGC functions assist operation when large interfering signals are present and an automatic frequency control (AFC) function is provided to extend centre frequency acceptance.

FEATURES

■ Very Low Power Operation from Single Cell

■ Superior Sensitivity

■ Operation at 512, 1200 and 2400 Baud

■ On Chip 1 Volt Regulator

■ 1mm Height Miniature Package

■ Automatic Frequency Control Function

■ Programmable Post Detection Filter

■ AGC Detection Circuitry

■ Power Down Function

■ Battery Strength Indicator

GTH ADJ

32 31 30 29 28 27 26 25

IRF

GND

MIXIP A

MIX DEC

MIXIP B

REG CNT

V

REG

TPI

1 2 3 4 5 6 7 8

9 10111213141516

I1

Fig. 1 Pin identification diagram (top view). See Table 1 for

pin descriptions

TC ADJ

IAGC OP

TP LIM I

SL6619

1

I2

CC

V

LOIP I

BATT

V

BRF1

GYR I

LOIP Q

BRF CNT

AFC2

24 23 22 21 20 19 18 17

Q1

Q2

AFC1 BATT FLAG VCC2 DATA OP BEC AFC OP V

REF

TPQ

TP32

APPLICATIONS

■ Pagers, including Credit Card, PCMCIA and

Watch Pagers

■ Low Data Rate Receivers, e.g. Security Systems

ORDERING INFORMATION

SL6619/KG/TP1N 1mm TQFP device, baked and dry

packed, supplied in trays

SL6619/KG/TP1Q 1mm TQFP device, baked and dry

3

5

packed, supplied in tape and reel

12 9

MIXER

10 13 7 6 8 29 4 20 11 22 2 18

− +

1·0V

−

1·08V

+

ABSOLUTE MAXIMUM RATINGS

Storage temperature Operating temperature Maximum voltage on any pin w.r.t. any other pin, subject to the following conditions:

Current, pin 3 (MIXIP), pin 5 (MIXPB), pin 12 (LOIPI) and pin 14 (LOIPB)

Most negative voltage on any pin

MIX

LIMITER

BEC VCC1 VCC2 GND V

DEC

4

f

DETECTOR

LIMITER

AFC

REF

255°C to1150°C

210°C to155°C

14V

<5ma

20·5V w.r.t. gnd

26 27

21

31 30

19

14 15 16 28 23 17 1 32 24 25

Fig. 2 Block diagram of SL6619

SL6619

Pin number

1 2 3 4 5 6 7 8

9 10 11 12 13 14

Pin name

IRF

GND MIXIP A MIX DEC MIXIP B REG CNT VREG TPI I1 I2 VCC1 LOIP I GYRI LOIP Q

Pin description

LNA current source Ground Mixer input A Mixer biasing decouple Mixer input B 1V regulator control external PNP drive 1V regulator output voltage I channel pre-gyrator filter test point. Mixer output, I channel Mixer output, I channel Positive supply 1 LO input channel I Gyrator current adjust pin

LO input channel Q 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Q1 Q2 TPQ VREF AFC OP BEC DATA OP VCC2 BATT FLAG AFC1 AFC2 BRF CNT BRF1 VBATT TP LIM I IAGC OP

Mixer output, Q channel

Q channel pre-gyrator filter test point

Reference voltage

AFC output

Battery economy control

Data output pin

Positive supply 2

Battery flag output

AFC characteristic defining pin

Bit rate filter control

Bit rate filter 1, output from detector

Battery flag input voltage

I channel limiter (post gyrator filter) test point, output only

Audio AGC output current 31 32

TC ADJ GTH ADJ

Audio AGC time constant adjust

Audio AGC gain and threshold adjust. RSSI signal indicator

Table 1 SL6619 pin descriptions

2

ELECTRICAL CHARACTERISTICS (1)

Electrical Characteristics (1) are guaranteed over the following range of operating conditions unless otherwise stated

T

= 125°C, VCC1 = 1·3V, VCC2 = 2·7V

AMB

Value

Characteristic

Min.

Typ. Max.

ConditionsUnits

SL6619

Supply voltage, VCC1 Supply voltage, V Supply current, I Supply current, I 1 volt regulator, V

CC CC

CC

1 2

REG

2

1 volt regulator load current LNA current source, IRF Reference voltage, V V

source current

REF

V

sink current

REF

Data Amplifier

DATA OP sink current DATA OP leakage current Output mark:space ratio

Battery Economy

Power down I Power down I

CC CC

1

2 BEC input logic high BEC input logic low BEC input current BEC input current

11 22 11 22

18 18 18

21 21 21

11 22 20 20 20 20

0·95

1·9

1·20

260 7 7 1

0·95 0·25

375

1·15

1·3 2·7

1·60

350

1·0

500

1·25

25

7:9

2·7 3·5 2·2

460

1·05

3

700

1·31

20

1·0

1·0 9:7

VCC1<VCC220·8V

V V

mA

Including IRF

µA

V

mA

µA

V

= 3mA, external PNP(b>100, V

I

LOAD

External PNP (h

>100, V

FE

CE

PTAT, voltage on pin 1 = 0·3V and 1·3V Typical temperature coefficient = 10·1mV/°C

µA µA

µA

Output logic low, pin 21 voltage = 0·3V

µA

Output logic high, pin 21 voltage = V Preamble at 1200 baud, Df = 4kHz,

= 0·1V)

CE

CC

= 0·1V)

2

pin 26 = 0V, BRF capacitor = 560pF, DATA OP pullup resistor = 200kΩ

V

220·3V

CC

21·0 21·0

V

10 10

CC

0·3

0·5 2·0

0

1·0 1·0

µA

Pin 20 = logic low

µA

Pin 20 = logic low V V

µA µA

Powered up

Powered down

Powered up

Powered down

2

Battery Flag

V

trigger point

BATT

BATT FLAG sink current BATT FLAG sink current BATT FLAG sink current V

input voltage

BATT

V

input current

BATT

V

input current

BATT

28 23 23 23 28 28 28

1·04

1·0

25

21·0 21·0

1·08

1·12

1·0

2·0 1·0 1·0

V

Current sunk by pin 23 = 1µA

µA

Pin 28 voltage = 1·04V

µA

Pin 28 voltage = 1·12V

µA

Pin 28 voltage = 1·14V V

µA

V

= 1·14V

BATT

µA

V

= 1·04V

BATT

Continued…

3

SL6619

ELECTRICAL CHARACTERISTICS (1) (Cont.)

Electrical Characteristics (1) are guaranteed over the following range of operating conditions unless otherwise stated

T

= 125°C, VCC1 = 1·3V, VCC2 = 2·7V

AMB

Value

Characteristic

Mixers

LO DC bias voltage Gain to TPI

Gain to TPQ

Match of gain to TPI and TPQ

Audio AGC

IAGC OP max. sink current IAGC OP leakage current

AFC

AFC DC current, I

AFC4k5

AFC DC current

12,14

3,5,8,12

3,5,14,

17

3,5,8,

12,14,17

30 30

19 19

19

Min.

38

21

I

AFC4k5

10·2

Typ.

V

CC

42

0

40

0·0

I

AFC4k5

10·7

I

AFC4k5

20·9

Max.

1

46

Units

V

dB

LO inputs (12, 14) driven in quadrature: 45mVrms at 450MHz, CW. Mixer inputs (3, 5) driven differentially: 0·45mVrms at 450·004MHz, CW.

46

11

1

I

AFC4k5

dB

µA µA

µA

As gain to TPI

As gain toTPI

TPI, TPQ signals limiting No signal applied

f

= fLO14·5kHz, CW

C

f

= fLO12·5kHz, CW

C

= fLO16·5kHz, CW

f

C

20·2

Conditions

Bit Rate Filter Control

BRF CNT input logic high

BRF CNT input logic low Tristate I/P current window BRF 1 output current BRF 1 output current BRF 1 output current BRF CNT input high current BRF CNT input low current

26

26 26 27 27 27 26 26

V

CC

20·3

0

20·4

27·5 27·5

V

2

VCC2

0·1

10·4 3·5 1·7

0·74

17·5

µA µA µA µA µA µA

2400 baud

V

1200 baud 512 baud Pin 26 logic high Pin 26 logic low Pin 26 logic tristate (open circuit)

4

ELECTRICAL CHARACTERISTICS (2)

Electrical Characteristics (2) are guaranteed over the following range of operating conditions unless otherwise stated. Characteristics are tested at room temperature only and are guaranteed by characterisation test or design.

T

= 210°C to 155°C, VCC1 = 1·4V to 2·0V, VCC2 = 2·3V to 3·2V. VCC1,VCC220·8V

AMB

Value

Characteristic

Min.

Typ. Max.

ConditionsUnits

SL6619

Supply voltage, VCC1 Supply voltage, V Supply current, I Supply current, I 1 volt regulator, V

CC CC

CC

1 2

REG

2

1 volt regulator load current LNA current source, IRF Reference voltage, V V

source current

REF

V

sink current

REF

Turn-on time

Turn-off time

Data Amplifier

DATA OP sink current DATA OP leakage current Output mark:space ratio

Battery Economy

Power down I Power down I

CC CC

1

2 BEC input logic high BEC input logic low BEC input current BEC input current

11 22 11 22

18 18 18

21 21 21

11 22 20 20 20 20

0·95

1·9

1·3 2·7

1·60

350 7 7 1

0·93 0·25

375

1·13

1·0

500

1·25

22

7:9

2·7 3·5 2·4

510

1·05

3

800

1·33

18

0·8

5

1

1·5 9:7

VCC1<VCC220·8V at >25°C only

V V

mA

Including IRF

µA

V

mA

µA

V

= 3mA, external PNP(b>100, V

I

LOAD

External PNP(h

>100, V

FE

CE

PTAT, voltage on pin 1 = 0·3V and 1·3V Typical temperature coefficient = 10·1mV/°C

µA µA

ms

Stable data O/P when 3dB above sensitivity. C

= 2·2µF

VREF

ms

Fall to 10% of steady state I

µA

Output logic low, pin 21 voltage = 0·3V

µA

Output logic high, pin 21 voltage = V Preamble at 1200 baud, Df = 4kHz,

= 0·1V)

1. C

CC

VREF

CC

= 0·1V)

CE

= 2·2µF

2

pin 26 = 0V, BRF capacitor = 560pF, DATA OP pullup resistor = 200kΩ

V

220·3V

CC

21·0 21·0

V

12 12

CC

0·3

0·5 2·0

0

1·5 1·5

µA

Pin 20 = logic low

µA

Pin 20 = logic low V V

µA µA

Powered up

Powered down

Powered up

Powered down

2

Battery Flag

V

trigger point

BATT

BATT FLAG sink current BATT FLAG sink current BATT FLAG sink current V

input voltage

BATT

V

input current

BATT

V

input current

BATT

28 23 23 23 28 28 28

1·04

2

20

21·5 21·5

1·08

1·12

2

2·0 1·5 1·5

V

Current sunk by pin 23 = 1µA

µA

Pin 28 voltage = 1·04V

µA

Pin 28 voltage = 1·12V

µA

Pin 28 voltage = 1·14V V

µA

V

= 1·14V

BATT

µA

V

= 1·04V

BATT

Continued…

5

SL6619

ELECTRICAL CHARACTERISTICS (2) (Cont.)

Electrical Characteristics (2) are guaranteed over the following range of operating conditions unless otherwise stated. Characteristics are tested at room temperature only and are guaranteed by characterisation test or design.

T

= 210°C to 155°C, VCC1 = 1·4V to 2·0V, VCC2 = 2·3V to 3·2V. VCC1,VCC220·8V

AMB

Value

Characteristic

Mixers

LO DC bias voltage Gain to TPI

Gain to TPQ

Match of gain to TPI and TPQ

Audio AGC

IAGC OP max. sink current IAGC OP leakage current

12,14

3,5,8,12

3,5,14,

17

3,5,8,

12,14,17

30 30

Min.

35

21·5

15

Typ.

V

CC

42

0

40

Max.

1

46

Units

V

dB

LO inputs (12, 14) driven in quadrature: 45mVrms at 450MHz, CW. Mixer inputs (3, 5) driven differentially: 0·45mVrms at 450·004MHz, CW.

46

11·5

80

2

dB

µA µA

As gain to TPI

As gain toTPI

TPI, TPQ signals limiting No signal applied

Conditions

AFC

AFC DC current, I

AFC4k5

AFC DC current

Bit Rate Filter Control

BRF CNT input logic high

BRF CNT input logic low Tristate I/P current window BRF 1 output current BRF 1 output current BRF 1 output current BRF CNT input high current BRF CNT input low current

19 19

19

26

26 26 27 27 27 26 26

I

AFC4k5

10·1

V

CC

20·3

0

20·4

210 210

0·0

I

AFC4k5

µA µA

f

= fLO14·5kHz, CW

C

f

= fLO12·5kHz, CW

C

10·7

I

AFC4k5

20·9

2

I

AFC4k5

20·1

VCC2

0·1

10·4 3·5 1·7

0·74

110 110

µA

V

µA µA µA µA µA µA

= fLO16·5kHz, CW

f

C

2400 baud

1200 baud 512 baud Pin 26 logic high Pin 26 logic low Pin 26 logic tristate (open circuit)

6

SL6619

RECEIVER CHARACTERISTICS (450MHz)

Receiver Characteristics (450MHz) are guaranteed over the following range of operating conditions unless otherwise stated. Characteristics are not tested but are guaranteed by characterisation test or design. All measurements made using the characterisation circuit Fig. 5. See Application Note AN137 for details of test method.

T

= 210°C to 155°C, VCC1 = 1·04V to 2·0V, VCC2 = 2·3V to 3·2V, VCC1,VCC220·8V, carrier frequency = 450MHz,

AMB

BER = 1 in 30, AFC open loop. LNA gain set such that an RF signal of273dBm at the LNA input, offset from the LO by 4kHz, gives a typical IF signal level of 300mV p-p at TPI and TPQ. LNA noise figure,2dB

Value

Characteristic

Min.

Typ.

Max.

Units

Conditions

Sensitivity

Intermodulation, IP3

Adjacent Channel

Deviation Acceptance

Up Down Up Down Up Down

Centre Frequency Acceptance

50 48

62·5

60

11·8 22·7 11·7

23

62·0 62·0

2128 2126 2123

57 55 53

74 72 69

11·9 22·5 13·0 22·3 12·5 22·3

62·8 62·5 62·5

2122 2119

14·6 21·7 14·6 21·7

62·9 63·2

dBm dBm dBm

dB dB dB

kHz kHz kHz kHz kHz kHz

kHz kHz kHz

512bps, Df = 4·5kHz 1200bps, Df = 4·0kHz 2400bps, Df = 4·5kHz. LO = 215dBm

512bps, Df = 4·5kHz 1200bps, Df = 4·0kHz 2400bps, Df = 4·5kHz. LO = 215dBm. Channel spacing 25kHz

512bps, Df = 4·5kHz, no AFC 512bps, Df = 4·5kHz, no AFC 1200bps, Df = 4·0kHz, no AFC 1200bps, Df = 4·0kHz, no AFC 2400bps, Df = 4·5kHz, no AFC 2400bps, Df = 4·5kHz, no AFC

512bps, Df = 4·5kHz, no AFC 1200bps, Df = 4·0kHz, no AFC 2400bps, Df = 4·5kHz, no AFC

AFC Capture Range (AFC Closed Loop)

64

63·5

64

kHz kHz kHz

512bps, Df = 4·5kHz. All at sensitivity 13dB or above 1200bps, Df = 4·0kHz. All at sensitivity 13dB or above 2400bps, Df = 4·5kHz. All at sensitivity 13dB or above

7

SL6619

RECEIVER CHARACTERISTICS (280MHz)

Receiver Characteristics (280MHz) are guaranteed over the following range of operating conditions unless otherwise stated. Characteristics are not tested but are guaranteed by characterisation test or design. All measurements made using the characterisation circuit Fig. 5. See Application Note AN137 for details of test method.

T

= 210°C to 155°C, VCC1 = 1·04V to 2·0V, VCC2 = 2·3V to 3·2V, VCC1,VCC220·8V, carrier frequency = 280MHz,

AMB

BER = 1 in 30, AFC open loop. LNA gain set such that an RF signal of273dBm at the LNA input, offset from the LO by 4kHz, gives a typical IF signal level of 300mV p-p at TPI and TPQ. LNA noise figure,2dB

Value

Characteristic

Min.

Typ.

Max.

Units

Conditions

Sensitivity

Intermodulation, IP3

Adjacent Channel

Deviation Acceptance

Up Down Up Down Up Down

Centre Frequency Acceptance

2128 2127

52 49

62·5

60

11·8 22·7 11·7 23·0

62·0 62·0

2129 2127 2124

57 56

53·5

74 72 70

11·9 22·5 13·0 22·3 12·5 22·3

62·8 62·5 62·5

2124 2121

60 57

80 77

14·6 21·7 14·6 21·7

62·9 63·2

dBm dBm dBm

dB dB dB

kHz kHz kHz kHz kHz kHz

kHz kHz kHz

512bps, Df = 4·5kHz 1200bps, Df = 4·0kHz 2400bps, Df = 4·5kHz. LO = 215dBm

512bps, Df = 4·5kHz 1200bps, Df = 4·0kHz 2400bps, Df = 4·5kHz. LO = 215dBm. Channel spacing 25kHz

512bps, Df = 4·5kHz, no AFC 512bps, Df = 4·5kHz, no AFC 1200bps, Df = 4·0kHz, no AFC 1200bps, Df = 4·0kHz, no AFC 2400bps, Df = 4·5kHz, no AFC 2400bps, Df = 4·5kHz, no AFC

512bps, Df = 4·5kHz, no AFC 1200bps, Df = 4·0kHz, no AFC 2400bps, Df = 4·5kHz, no AFC

AFC Capture Range (AFC Closed Loop)

1MHz Blocking

8

67 65

64

63·5

64

75 75 75

78 76

kHz kHz kHz

dB dB dB

512bps, Df = 4·5kHz. All at sensitivity 13dB or above 1200bps, Df = 4·0kHz. All at sensitivity 13dB or above 2400bps, Df = 4·5kHz. All at sensitivity 13dB or above

512bps, Df = 4·5kHz 1200bps, Df = 4·0kHz 2400bps, Df = 4·5kHz. LO = 215dBm

OPERATION OF SL6619 Low Noise Amplifier

To achieve optimum performance it is necessary to incorporate a Low Noise RF Amplifier at the front end of the receiver. This is easily biased using the on-chip voltages and current source provided. All voltages and current sources used for bias of the RF amplifier, receiver and mixers should be RF decoupled using 1nF capacitors. The receiver also requires a stable Local Oscillator at the required channel frequency.

Local Oscillator

The Local Oscillator signal is applied to the device in phase quadrature. This can be achieved with the use of two RC networks operating at their 23dB/45° transfer characteristic. The RC characteristics for I and Q channels are combined to give a full 90° phase differential between the LO ports of the device. Each LO port also requires an equal level of drive from the oscillator. This is achieved by forming the two RC networks into a power divider.

Gyrator Filters

The on-chip filters include an adjustable gyrator filter. This may be adjusted by changing the value of the resistor connected between pin 13 and GND. This allows adjustment of the filters’ cutoff frequency and allows for compensation for possible process variations.

Audio AGC (Fig. 3)

The Audio AGC consists of a current sink which is controlled by the audio (baseband) signal. It has three parameters that may be controlled by the user. These are the attack (turn on ) time, decay (duration) time and threshold level. The attack time is simply determined by the value of the external capacitor connected to TCADJ. The external capacitor is in series with an internal 100kΩ resistor and the time constant of this circuit dictates the attack time of the AGC.

i.e. t

The decay time is determined by the external resistor connected in parallel with the capacitor CTC. The decay time is simply

When a large audio (baseband) signal is incident on the input to the AGC circuit, the variable current source is turned on. This causes a voltage drop across R13. The voltage potential between V current to flow in pin 30. This charges up C18 through the 100kΩ internal resistor. As the voltage across the capacitor increases, a current source is turned on and this sinks current from pin 32. The current sink on pin 32 can be used to drive

= 100kΩ3C18

ATTACK

t

= R173C18

DECAY

and the voltage on pin 31 causes a

REF

SL6619

the external AGC circuit by causing a PIN diode to conduct, reducing the signal to the RF amplifier.

RF AGC

The RF AGC is an automatic gain control loop that protects the mixer’s RF inputs, Pins 3 and 5, from large out of band RF signals. The loop consists of an RF received signal strength indicator which detect the signal at the inputs of the mixers. This RSSI signal is then used to control the LNA current source (pin 1).

Regulator

The on-chip regulator should be used in conjunction with a suitable PNP transistor to achieve regulation. As the transistor forms part of the regulator feedback loop the transistor should exhibit the following characteristics:

H

.100 for VCE. = 0·1V

FE

If no external transistor is used, the maximum current sourcing capability of the regulator is limited to 30µA.

Automatic Frequency Control (Fig. 4)

The Automatic Frequency Control consists of a detection circuit which gives a current output at AFC OP whose magnitude and sign is a function of the difference between the local oscillator (f is then filtered by an off-chip integrating capacitor. The integrator’s output voltage is used to control a voltage control crystal oscillator. This closes the AFC feedback loop giving the automatic frequency control function. For an FSK modulated incoming RF carrier, the AFC OP current’s polarity is positive, i.e.current is sourced for f negative, i.e. current is sunk, for fLO.fC.fLO24kHz. The magnitude of the AFC OP current is a function of frequency offset and the transmitted data’s bit stream. If the carrier frequency, (f then the magnitude of the current is zero.

BIT RATE FILTER CONTROL

The logic level on pin 26 controls the cutoff frequency of the 1st order bit rate for a given bit rate filter capacitor at pin

27. This allows the cutoff frequency to be changed between f

, 2fC and 0·43fC through the logic level on pin 26. This

C

function is achieved by changing the value of the current in the 4f detector’s output stage. A logic zero (0V to 0·1V) on pin 26 gives a cutoff frequency of f gives a cut off frequency of 2fC and an open circuit at pin 26 gives a cutoff frequency of 0·43f

) and carrier frequencies (fC). This output current

LO

LO,fC,fLO

), equals the local oscillator frequency, (fLO)

C

a logic one (VCC220·3V to VCC2)

C

.

C

14kHz and

9

SL6619

CURRENT

SOURCE 1

R13 C34

SL6619

V

CC

− +

32 31

V

REF

R

DECAY

100k

R17

V

REF

SL6619

VOLTAGE

REFERENCE

VCC2

AFC

DETECTION

CIRCUIT

0µA/5µA

5µA/0µA

15mV

− +

C18 C

TC

V

REF

Fig.3 AGC schematic

18

C

VREF

19

R11

24

C21

30

C15 C

1

INT

R15 320k

VCC1

RF

INPUT

C30 C

INT

VCC1

TO RF AMP

2

TO VCXO VARACTOR DIODE

Peak deviation

(kHz)

3·5 4 4·5 5 5·5

25

C22

Fig. 4 AFC schematic

Baud rate

(bps)

512, 1200, 2400 512, 1200, 2400 512, 1200, 2400 512, 1200, 2400 512, 1200, 2400

Component (Fig. 4)

C22 C21 R11

750pF 560pF 510pF 470pF 430pF

2·0nF 1·5nF 1·3nF 1·2nF 1·1nF

Table 2 AFC defining components

15kΩ 15kΩ 15kΩ 15kΩ 15kΩ

10

SL6619

1

CC

V

1

CC

V

BRF CNT

TP LIM I

REF

V

C23 C24

C21

C22

C27

C18

R17

R13

C34

2

CC

V

2

CC

V

R16

R11

AFC1

BATT FLAG

24

IRF

23

1

2

GND

TO TR2

R10

1

CC

V

1

CC

V

AFC2

BRF CNT

BRF1

VBATT

TP LIM I

IAGC OP

TC ADJ

GTH ADJ

32 31 30 29 28 27 26 25

C20

C19

2

CC

V

MIXIP A

R9

22

3

DATA OP

R8

DATA OP

21

SL6619

4

MIX DEC

C25

T1

BEC

20

5

MIXIP B

AFC OP

R15

C15 C30

AFC OP

19

6

REG CNT

C26

TR3

REF

V

REG

V

REF

V

18

7

C16 C17

TPQ

TPI

17

8

REG

V

1

CC

V

9 10111213141516

1

CC

V

R7

C12

R5

C14

LO

EXT

C11R4

1

CC

V

C13

R6

C32C29

Q2

Q1

LOIP Q

R14

GYR I

LOIP I

CC

1

V

I2

C9 C10

I1

IRF

FROM

REF

V

VC1

R3

TR1

R2

C6 C33

1

CC

V

C7

C8

(PIN 1)

TR2

C3

L1

C2C1

R1

C5

C4

REG

V

REG

V

C28

R12

RF IN

Fig. 5 SL6619 characterisation circuit (see Tables 3 and 4 for component values)

11

SL6619

Resistors Capacitors Capacitors (cont.) Inductors

R1 4·7kΩ R2 4·7kΩ R3 2kΩ R4 100Ω R5 100Ω R6 100Ω R7 100Ω R8 430kΩ R9 220kΩ R10 S/C R11 15kΩ R12 2kΩ R13 33kΩ R14 180kΩ R15 430kΩ R16 220kΩ R17 220kΩ

Resistors

R1 4·7kΩ R2 4·7kΩ R3 1·8kΩ R4 100Ω R5 100Ω R6 100Ω R7 100Ω R8 430kΩ R9 220kΩ R10 S/C R11 15kΩ R12 2kΩ R13 33kΩ R14 180kΩ R15 430kΩ R16 220kΩ R17 220kΩ

C1 12pF C2 O/C C3 220nF C4 1nF C5 1nF C6 1nF C7 1nF C8 3·3pF C9 4·7nF C10 4·7nF C11 4·7pF C12 5·6pF C13 1nF C14 1nF C15 1nF C16 1nF C17 2·2µF

C18 100nF C19 1nF C20 2·2µF C21 1·5nF C22 560pF C23 1nF C24 2·2µF C25 100nF C26 100nF C27 560pF C28 1nF C29 1nF C30 1nF C32 100nF C33 100nF C34 100nF VC1 3-10pF

L1 56nH T1 30nH 1:1, Coilcraft M1686-A

Transistors

TR1 Toshiba 2SC5065 TR2 Toshiba 2SC5065 TR3 FMMT589 (Zetex ZTX550)

Table 3 Component list for 280MHz characterisation board

Capacitors Capacitors (cont.) Inductors

C1 O/C C2 O/C C3 1nF C4 1nF C5 1nF C6 1nF C7 1nF C8 3·3pF C9 4·7nF C10 4·7nF C11 3·9pF C12 3·3pF C13 1nF C14 1nF C15 1nF C16 1nF C17 2·2µF

C18 100nF C19 1nF C20 2·2µF C21 1·5nF C22 560pF C23 1nF C24 2·2µF C25 100nF C26 100nF C27 560pF C28 1nF C29 1nF C30 1nF C32 100nF C33 100nF C34 100nF VC1 3-10pF

L1 47nH T1 16nH 1:1, Coilcraft Q4123-A

Transistors

TR1 Philips BFT25A TR2 Philips BFT25A TR3 FMMT589 (Zetex ZTX550)

12

Table 4 Component list for 450MHz characterisation board

TYPICAL DC PARAMETERS (FIGS. 6 TO 8)

SL6619

2·00

1·80

1·60

1·40

1·20

Fig. 6a Typical I

CC

1

1 (mA)

CC

I

240 220 0 20 40 60 80

1·00

0·80

0·60

0·40

0·20

VCC = 3·0, 4·0 V

CC

= 1·3, 2·7

V

CC

= 1·0, 1·9

TEMPERATURE °C

0·45

Fig. 6b Typical ICC2

0·40

0·35

0·30

2 (mA)

CC

I

240 220 0 20 40 60 80

0·25

0·20

0·15

0·10

0·05

VCC = 3·0, 4·0

CC

= 1·3, 2·7

V

CC

= 1·0, 1·9

V

TEMPERATURE °C

Conditions

Standard Mitel characterisation board (Fig. 5) I

1 includes IRF LNA current (typ. 500µA) but does not include the regulator load current

CC

The Audio AGC and RF AGC are both inactive I

2 is measured with BATTFLAG and DATAS OP high, fC = 282MHz

CC

V

connected to VCC1

BATT

Fig. 6 Typical ICC1 and ICC2 v. supply and temperature

13

SL6619

1·30

1·28

(V)

REF

V

240 220 0 20 40 60 80

1·26

1·24

1·22

Fig. 7a Typical V

REF

VCC = 3·0, 4·0 V

CC

= 1·3, 2·7

V

CC

= 1·0, 1·9

TEMPERATURE °C

1·05

1·03

(V)

REG

V

240 220 0 20 40 60 80

1·01

0·99

0·97

Fig. 7b Typical V

(load = 2·2kΩ to GND)

REG

VCC = 3·0, 4·0 V

CC

= 1·3, 2·7

V

CC

= 1·0, 1·9

TEMPERATURE °C

Conditions

Standard Mitel characterisation board (Fig. 5) I

1 includes IRF LNA current (typ. 500µA) but does not include the regulator load current

CC

The Audio AGC and RF AGC are both inactive I

2 is measured with BATTFLAG and DATAS OP high, fC = 282MHz

CC

V

connected to VCC1

BATT

14

Fig. 7 Typical V

REF

and V

v. supply and temperature

REG

SL6619

700

600

500

(µA)

RF

I

240 220 0 20 40 60 80

400

300

200

100

Fig. 8a Typical IRF (V

IRF

= 0·3V)

VCC = 3·0, 4·0 V

CC

= 1·3, 2·7

CC

= 1·0, 1·9

V

TEMPERATURE °C

700

600

500

(µA)

RF

I

240 220 0 20 40 60 80

400

300

200

100

Fig. 8b Typical IRF (V

IRF

= 1·3V)

VCC = 3·0, 4·0 V

CC

= 1·3, 2·7

CC

= 1·0, 1·9

V

TEMPERATURE °C

Conditions

Standard Mitel characterisation board (Fig. 5) I

1 includes IRF LNA current (typ. 500µA) but does not include the regulator load current

CC

The Audio AGC and RF AGC are both inactive I

2 is measured with BATTFLAG and DATAS OP high, fC = 282MHz

CC

V

connected to VCC1

BATT

Fig. 8 Typical IRF v. supply and temperature

15

SL6619

TRIGGER VOLTAGE (V)

V

BATT

1·1

1·08

1·06

1·04

VCC = 3·5

VCC = 2·7

CC = 2·3

V

CC = 1·9

V

240

220 0 20 40 60 80

TEMPERATURE °C

Conditions

Standard Mitel characterisation board (Fig. 5) I

1 includes IRF LNA current (typ. 500µA) but does not include the regulator load current

CC

The Audio AGC and RF AGC are both inactive I

2 is measured with BATTFLAG and DATAS OP high, fC = 282MHz

CC

V

connected to VCC1

BATT

Fig. 9 Typical battery flag trigger voltage (V

BATTFLAG

= VCC/2) v. supply and temperature

TYPICAL AC PARAMETERS (FIGS. 10 TO 13)

240 220 0 20 40 60 80

2124·00

2126·00

TEMPERATURE °C

VCC = 3·0, 4·0

CC = 1·3, 2·7

V

CC = 1·0, 1·9

V

2128·00

SENSITIVITY (1 IN 30 BER) (dBm)

2130·00

Conditions

282 Mitel characterisation board (Fig. 5), f

= 282MHz

C

1200bps baud rate, 4kHz peak deviation frequency, BER 1 in 30 The LNA gain is set such that an RF signal of 273dBm at the LNA input, offset from the LO by 4kHz, gives a typical signal level of 300mVp-p at TPI and TPQ

Fig. 10 Typical sensitivity v. supply and temperature

16

SL6619

60

58

56

Fig. 11a Typical IP3

IP3(dB)

54

VCC = 3·0, 4·0 V

CC

V

= 1·3, 2·7

= 1·0, 1·9

52

240 220 0 20 40 60 80

TEMPERATURE °C

75

74

73

ADJACENT CHANNEL (dB)

240 220 0 20 40 60 80

72

71

Fig. 11b Typical adjacent channel

VCC = 3·0, 4·0 V

CC

= 1·3, 2·7

CC

= 1·0, 1·9

V

TEMPERATURE °C

Conditions

282 Mitel characterisation board (Fig. 5), fC = 282MHz 1200bps baud rate, 4kHz peak deviation frequency, BER 1 in 30 The LNA gain is set such that an RF signal of 273dBm at the LNA input, offset from the LO by 4kHz, gives a typical signal level of 300mVp-p at TPI and TPQ

Fig. 11 Typical IP3 and adjacent channel v. supply and temperature

17

SL6619

4·0

3·5

3·0

DEVIATION ACCEPTANCE UP (kHz)

240 220 0 20 40 60 80

2·5

Fig. 12a Typial deviation acceptance UP

VCC = 3·0, 4·0 V

CC

= 1·3, 2·7

CC

= 1·0, 1·9

V

TEMPERATURE °C

2·5

2·4

2·3

2·2

2·1

DEVIATION ACCEPTANCE DOWN (kHz)

240 220 0 20 40 60 80

Fig 12b Typical deviation acceptance DOWN

VCC = 3·0, 4·0 V

CC

= 1·3, 2·7

CC

= 1·0, 1·9

V

TEMPERATURE °C

Conditions

282 Mitel characterisation board (Fig. 5), fC = 282MHz 1200bps baud rate, 4kHz peak deviation frequency, BER 1 in 30 The LNA gain is set such that an RF signal of 273dBm at the LNA input, offset from the LO by 4kHz, gives a typical signal level of 300mVp-p at TPI and TPQ

18

Fig. 12 Typical deviation acceptance v. supply and temperature

SL6619

2·7

2·6

2·5

2·4

CENTRE FREQUENCY ACCEPTANCE (kHz)

240 220 0 20 40 60 80

Fig. 13a Typical centre frequency acceptance

VCC = 3·0, 4·0

CC

= 1·3, 2·7

V

CC

= 1·0, 1·9

V

TEMPERATURE °C

80

Fig. 13b Typical1MHz blocking

79

78

77

76

1MHz BLOCKING ( dB)

75

74

73

72

71

240 220 0 20 40 60 80

VCC = 3·0, 4·0 V

CC

= 1·3, 2·7

CC

= 1·0, 1·9

V

TEMPERATURE °C

Conditions

282 Mitel characterisation board (Fig. 5), fC = 282MHz 1200bps baud rate, 4kHz peak deviation frequency, BER 1 in 30 The LNA gain is set such that an RF signal of 273dBm at the LNA input, offset from the LO by 4kHz, gives a typical signal level of 300mVp-p at TPI and TPQ

Fig. 13 Typical centre frequency acceptance and 1MHz blocking v. supply and temperature

19

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