Holtek Semiconductor Inc HT9015 Datasheet

HT9015

Preliminary

RF Single Chip for Cordless Phone

Features

Operating voltage: 2.7V~6V

·

Extremely low power consumption current

·

-

ICC=0mA (typ.) in battery-saving mode

-

ICC= 8.5mA (typ.) in standby mode

-

ICC= 13.5mA (typ.) for communication

Built-in IF decoder, compander and PLL

·

IF decoder

·

-

1st/2nd Mixers, RX VCO

-

RSSI quadrature detector, IF AMP

-

Noise detector

General Description

The HT9015 is an RF single chip for cordless
phone systems. Internally these are three major
parts, a PLL, an IF decoder and a compander.

The PLL provides radio channel selection for
either the transmitter or receiver. Frequency
locking status of the selected channel can be
monitored by a control register.

The IF decoder provides two frequency down
converters that let high frequency signals pass
through a mixer and local oscillator to be low­ered for frequency even base band signals. It
also provides an RSSI (receiver signal strength
indicator) function to detect the IF output sig-

Compander

·

-

Expander, Compressor, Limiter

-

Receive AMP, MIC AMP, PRE AMP

PLL

·

-

RX PLL, TX PLL

-

Local oscillator

-

Data latch control

-

Unlock detector

Four threshold variable battery alarms

·

nal strength and built-in noise detector for S/N
quality.

The compander provides better S/N ratio for
audio signal processing.

The HT9015 has a wide-range applications in
FM/FSK, Transmitting/Receiving of VHF
bandwidth including cordless phone, narrow
band voice and data transceiver systems.

The most significant advantage of the HT9015
is in the reduction of many external compo­nents making it well suited for cordless phone
baseset, handset radio section.

1 April 10, 2000

Block Diagram

GND2

6

TX_IN

VCC 3

7

8

LO 1

9

LO 2

CLK

DATA

STB

10

11

12

13

SIG_O UT

Preliminary

VCO 2

48

2

1

RX

VCO

D ata Latch

C ontrol

TX

PLL

LO

RX_OUT

4

TX_O U T

5

OSC

RX

PLL

C_RECT

3

VCO_CONT

VCO 1

47

R egulator

VCC 2

46

Low BAT

Alarm

1STM IX_IN

45

1st

M ix e r

2nd

M ix e r

44

VREF

43

1STM IX_O U T

E_RECT

42

41

2N D M IX _IN

40

N_REC

39

2N D M IX _O U T

38

VCC 1

37

IF _ IN

HT9015

FIL_O U T

FIL_IN

COM P_OUT

C_NF

MIC_OUT

MIC_IN

14

LPF

15

C_M UTE

16

17

18

MIC

AM P

19

PRE_IN

20

PRE_OUT

Com pressor

Expander

E_M UTE

PRE

AM P

21

IF

AM P

Lim iter

Receiver

AM P

25

22

RECE_INEXP_OUT

2423

RO1

RSSI

Quad

Detector

Com -

parator

Data

Com p

28

26

BA T _A LMRO2

27

D_CO M P_OUTRSSI

LPF

Noise
Filter

D_CO M P_IN

36

35

34

33

32

31

30

29

DEC

GND1

IF _ O U T

QUAD

AF_O UT

N_FIL_O UT

N _FIL_IN

2 April 10, 2000

Pin Assignment

Preliminary

HT9015

VCO 2

C_RECT

RX_OUT

TX_O U T

GND2

TX_IN

VCC3

LO 1

LO 2

SIG_OU T

CLK

DATA

STB

FIL_OU T

FIL_IN

COM P_OUT

C_NF

MIC_OUT

MIC_IN

PRE_IN

PRE_OUT

EXP_O U T

RECE_IN

RO1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

H T 9 0 1 5
48 SSO P

VCO 1

VCO _CONT

VCC2

1 S T M IX IN

VREF

1STM IX O U T

E_RECT

2 N D M IX IN

N_REC

2N D M IX O U T

VCC1

IF _ IN

DEC

GND1

IF _ O U T

QUAD

AF_O UT

N_FIL_OUT

N _F IL_IN

D_COM P_IN

D_COM P_O UT

RSSI

BAT_ALM

RO2

Pin Description

Pin No. Pin Name I/O Description

1 VCO2 I

2 C_RECT

3 RX_OUT O

4 TX_OUT O

5 GND2

6 TX_IN I

Connects LC network with VCO1 pin to provide the tank circuit
for the received voltage control oscillator

Normally connected to ground through a capacitor.

¾

Receiver phase detector output. The PDT of RX-PLL detects
phase errors from the received PLL. The output is connected to
external low pass filter.

Transmitter phase detector output. The PDT of TX-PLL detects
phase errors from the transmitted PLL. The output is connected
to an external low pass filter.

Digital ground

¾

14-bit programmable transmit counter input. The output signal
from the external VCO circuit can be AC coupled to this pin.

3 April 10, 2000

Preliminary

Pin No. Pin Name I/O Description

7 VCC3

8 LO1 I This pin connects to LO2 pin with external crystal and capacitor.

9 LO2 O

10 SIG_OUT O

11 CLK I Clock input pin

12 DATA I Serial data input pin

13 STB I Data strobe control pin

14 FIL_OUT O Splatter filter output pin

15 FIL_IN I Splatter filter input pin

16 COMP_OUT O Compressor output pin

17 C_NF

18 MIC_OUT O Microphone amplifier output pin

19 MIC_IN I Microphone amplifier input pin

20 PRE_IN I Pre-amplifier input pin

21 PRE_OUT O Pre-amplifier output pin

22 EXP_OUT O Expander output pin

23 RECE_IN I Receiver amplifier input pin

24 RO1 O Receiver amplifier output pin

25 RO2 O Receiver amplifier output pin

26 BAT_ALM O

27 RSSI O

28 D_COMP_OUT O Data comparator output pin

29 D_COMP_IN I

30 N_FIL_IN I Input to noise filter

31 N_FIL_OUT O Output from noise filter

Positive power supply for digital block circuits.

¾

This output pin generates a reference frequency used for the
PLL and the second mixer local oscillator when connected to
LO1 pin with an external crystal and capacitor.

This pin outputs four-type states and is selected by an internal
control register. There are RSSI state and noise state and RX/TX
PLL lock states.
Open drain output.

Normally connected to ground through a capacitor.

¾

Battery alarm output pin. When the battery voltage is lower
than the internal setting threshold this pin is active.
Open drain output.

Receiver signal strength indicator output pin, the output signal
depends on the IF amplifier output signal.

Data comparator input pin. Input to comparator to distinguish
digital data from audio.

HT9015

4 April 10, 2000

Preliminary

Pin No. Pin Name I/O Description

32 AF_OUT O

33 QUAD I

34 IF_OUT O

35 GND1

36 DEC

37 IF_IN I

38 VCC1

39 2NDMIX_OUT O

40 N_REC

41 2NDMIX_IN I

42 E_RECT

43 1STMIX_OUT O

44 VREF O Reference voltage input for compander.

45 1STMIX_IN I

46 VCC2

47 VCO_CONT I Normally connected to ground through a capacitor.

48 VCO1 I

FM demodulator output pin. Output signal frequency is within
the audio band.

Normally provides a 455kHz carry frequency for the FM quadra
ture detector.

IF amplifier output pin. Signal will later pass through external
90°C phase shifter for quadrature detector.

Analog ground

¾

Normally connected to VCC1 through a capacitor.

¾

IF amplifier input pin it is necessary to use the IF filter network
to get high quality IF signal.

Analog power supply

¾

Second mixer IF signal output pin and down converter. IF fre
quency is 455kHz.

Connect to ground through capacitor.

¾

Second mixer RF signal input pin and down converter. Fre
quency is 455kHz.

Expander rectifier filter capacitor pin.

¾

First mixer IF signal output pin and down converter. IF fre
quency is 10.7MHz.

The first mixer RF signal input. Carrier frequency from
20~60MHz.

Directly connects to the two voltage regulators inside.

¾

Connects LC network with VCO2 pin to provide the tank circuit
for the received voltage control oscillator.

HT9015

-

-

-

-

Absolute Maximum Ratings

Supply Voltage ...........................VSS-0.3V to 6V

Input Voltage .................V

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi

mum Ratings² may cause substantial damage to the device. Functional operation of this device
at other conditions beyond those listed in the specification is not implied and prolonged expo
sure to extreme conditions may affect device reliability.

-0.3V to VCC+0.3V

SS

Storage Temperature.................-55°Cto150°C

Operating Temperature ..............-20°Cto70°C

5 April 10, 2000

-

-

Preliminary

HT9015

Electrical Characteristics

Symbol Parameter

V

CC

I

CC1

I

CC2

I

CC3

I

CC4

I

CC5

I

CC(A)

I

CC(BS)

I

REF

V

IH

V

IL

I

IH

I

IL

f

CK

Operating Voltage

Current 1 Consumption 3.6V All on

Current 2 Consumption 3.6V RX-RF ON

Current 3 Consumption 3.6V RX-AF ON

Current 4 Consumption 3.6V TX-RF ON

Current 5 Consumption 3.6V TX-AF ON

Current Alarm Supply 3.6V

Supply Current in Battery
Saving Mode

V

Voltage

REF

Data Input Threshold 3.6V

Data Input Threshold 3.6V

Data Input Current 3.6V

Data Input Current 3.6V

CK Input Frequency 3.6V

Test Conditions

CC

Conditions

V

CC1=VCC3

= 100kW¾

R

L

V

¾

3.6V All off

3.6V

V

IH=VCC

V

= GND

IL

Min. Typ. Max. Unit

¾

¾

¾

¾

¾

¾

¾

¾¾

¾¾

3.6

13.5

8.5

3.5

2.1

1.7

100

0

1.5

V

CC3

¾

¾

¾

¾

¾

¾

¾mA

¾mA

¾

¾

¾¾0¾

¾

¾

¾¾

0

0

¾mA

¾mA

38 1000 kHz

Ta=25°C

V

mA

mA

mA

mA

mA

V

V

V

Regulator

Symbol Parameter

V

REG

I

OUT (MIN)

Output Voltage 3.6V I

Minimum Load Current 3.6V

Detector

Symbol Parameter

V

BAT-L

V

BAT-H

V

BAT-L

V

BAT-H

Detection Voltage 1 3.6V

Detection Voltage 1 3.6V

Detection Voltage 2 3.6V

Detection Voltage 2 3.6V

Test Conditions

Min. Typ. Max. Unit

V

CC

Conditions

= 1mA 1.7 2 2.3 V

OUT

V

OUT=VREG

(Open)-0.05V

¾

3

Test Conditions

Min. Typ. Max. Unit

V

Conditions

CC

¾¾

¾¾

¾¾

¾¾

6 April 10, 2000

3.3

3.37

3.15

3.2

¾

¾

¾

¾

¾

Ta=25°C

mA

Ta=25°C

V

V

V

V

Preliminary

HT9015

Symbol Parameter

V

BAT-L

V

BAT-H

V

BAT-L

V

BAT-H

V

OL

I

LEAK

V

TH

V

OL

I

LEAK

V

TH-H

V

TH-L

V

OL

I

LEAK

V

TH-L

V

TH-H

V

HYS

Detection Voltage 3 3.6V

Detection Voltage 3 3.6V

Detection Voltage 4 3.6V

Detection Voltage 4 3.6V

Output Low Level Voltage 3.6V

Output Leak Current 3.6V

Minimum Detection Level 3.6V f= 500Hz

Output Low Level Voltage 3.6V

Output Leak Current 3.6V

Noise Detection Level 3.6V

Noise Detection Level 3.6V

Noise Detection Level
Voltage

Output Leak Current 3.6V

RSSI Comparator
Detection Voltage

RSSI Comparator
Detection Voltage

RSSI Comparator Hysteresis 3.6V

Test Conditions

Conditions

V

CC

¾¾

¾¾

¾¾

¾¾

I

= 0.1mA

SINK

V

= 3.6V

ALM

I

= 0.2mA

SINK

V

= 3.6V

DATA

¾¾

¾¾

= 0.2mA

I

3.6V

SINK

VSIG= 3.6V

Comparator

3.6V
Output L ® H

Comparator

3.6V
Output H ® L

¾¾

Min. Typ. Max. Unit

¾

¾

3.05

3.10

2.78

2.82

0.1

0

¾

¾

¾

¾

¾

¾mA

¾¾¾

0.1

¾

¾

¾

¾

¾

¾

0.57

0.47

0.1

0.72

0.8

0.08

0

0

¾

¾mA

¾

¾

¾

¾

¾

¾

¾

V

V

V

V

V

mVrms

V

V

V

V

A

m

V

V

V

PLL Detection

Symbol Parameter

f

IN

V

IN

V

LO

I

CP1

I

CP2

I

LEAK

f

LO

Operating Frequency 3.6V

TX-PLL Input Sensitivity 3.6V

Local Oscillator Input
Sensitivity

Charge Pump Output Current 3.6V

Charge Pump Output Current 3.6V

Charge Pump Leak Current 3.6V

Local Oscillator Operating
Frequency

dBmV=dBmV EMF (Open), Ta=25°C

Test Conditions

Min. Typ. Max. Unit

V

3.6V

CC

Conditions

¾¾

¾¾

= 10.240MHz

f

LO

V

= 1.8V

CP

V

= 1.8V

CP

¾

¾

¾

46.61

103

110

200

400

MHz

¾

¾ dBmV

¾ dBmV

¾mA

¾mA

¾¾0¾mA

= 112dBmV

V

3.6V

LO

7 April 10, 2000

¾

10.24

¾

MHz