U6239B

TELEFUNKEN Semiconductors
Rev. A3, 28-May-97

1 (15)

2.9 GHz PLL for SAT TV Tuner with UNi-Bus

Description

The U6239B is a single-chip frequency synthesizer with
bidirectional I

C bus control and unidirectional 3-wire

bus control, developed for SAT TV-tuner and cable tuner
applications.

This IC contains an integrated preamplifier, a high
frequency prescaler, a reference divider with multiple
programmable divider ratios, a crystal oscillator, a phase/
frequency detector together with a charge pump, a tuning
amplifier and an analog-to-digital converter.

Features

D 2.9 GHz divide-by-16 prescaler integrated
D UNi-BUS:

C bus and 3-wire bus

C bus software compatible to U6223B

3-wire bus software compatible to LC7215 (Sanyo)

D I

C bus mode:

4 bidirectional ports (open collector)
2 unidirectional ports (open collector)
5 level ADC or unidirectional port (open collector)
Address mode select function (AMS, Pin 3):
3 or 4 addresses selectable via Pin 10

D 3-wire bus mode:

4 unidirectional ports (open collector)
Lock output (open collector)

D Programmable reference divider
D Low power consumption (typ. 5 V / 23 mA)
D Electrostatic protection according to MIL-STD 883

Block Diagram

ADC

AS / ENABLE / P3

5bit Latch

P6 / ADC

I/O

Ports

7bit Latch

8bit Latch

7bit Latch

SCL

SDA 4

Oscillator

XTAL

divide by 256/512/off/1024

Phase

detector

Charge

pump

16 VD

1 PD

GND 15

Control

UNIBUS

15/14bit

Poweron

reset

POR

P0/Lock

RD1,2,3

RDS / AMS

RFi

div. by 16

Prescaler

divide by 25/50/140/250

divide by 50/100/280/500

AMS

RDS

14bit Shift Reg.

Sync

LOCK

15bit Latch

SET

Sync

9611809

counter

Figure 1.

U6239B

TELEFUNKEN Semiconductors

Rev. A3, 28-May-97

2 (15)

Ordering Information

Extended Type Number

Package

Remarks

U6239B-AFPG3

SO16, plastic package

Taped and reeled
SSO16 package on request

Pin Configuration

RDS/AMS

SDA

95 10947

SCL

P6/ ADC

RFi

P0/ Lock

AS/ENABLE/
P3

GND

Symbol

Function

ÁÁÁ

ÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁ

Charge pump output

ÁÁÁ

ÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁ

Crystal input

RDS/

AMS

Reference divider select input
(3-wire bus mode)
Address mode select input
(I

C bus mode)

ÁÁÁ

ÁÁÁÁÁ

SDA

ÁÁÁÁÁÁÁÁÁÁ

Data input/ output

ÁÁÁ

ÁÁÁÁÁ

SCL

ÁÁÁÁÁÁÁÁÁÁ

Clock input

ÁÁÁ

ÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁ

Port 7 input/ output

ÁÁÁ

ÁÁÁÁÁ

ÁÁÁ

ÁÁÁÁÁ

P6/

ADC

ÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁ

Port 6 output
Analog-Digital-Converter input

ÁÁÁ

ÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁ

Port 5 input/ output

ÁÁÁ

ÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁ

Port 4 input/ output

ÁÁÁ

ÁÁÁÁÁ

ÁÁÁ

ÁÁÁÁÁ

AS/

ENABLE/

ÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁ

Address select input
Enable input
Port 3 output

ÁÁÁ

ÁÁÁÁÁ

P0/Lock

ÁÁÁÁÁÁÁÁÁÁ

Port 0 output/Lock output

ÁÁÁ

ÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁ

Supply voltage

ÁÁÁ

ÁÁÁÁÁ

RFi

ÁÁÁÁÁÁÁÁÁÁ

RF input

ÁÁÁ

ÁÁÁÁÁ

RFi

ÁÁÁÁÁÁÁÁÁÁ

RF input

ÁÁÁ

ÁÁÁÁÁ

GND

ÁÁÁÁÁÁÁÁÁÁ

Ground

ÁÁÁ

ÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁ

Active filter output

Circuit Description

The U6239B is a single-chip PLL designed for SAT TV
tuner and cable tuner. It consists of a divide-by-16
prescaler with an integrated preamplifier, a 15-bit
programmable divider, a crystal oscillator, and a
reference divider with selectable divider ratios, a phase/
frequency detector together with a charge pump which
drives the tuning amplifier. Only one external transistor
is required for varactor line driving. The device can be
controlled via I

C bus format or via 3-wire bus format. It

detects automatically which bus format has been
received. Therefore, there is no need for a bus selection
pin. In I

C bus mode, the device has four programmable

or one fixed and three programmable I

C bus addresses,

depending on the voltage level at Pin 3. They are

programmed by applying a specific input voltage to the
address select input Pin 10, enabling the use of up to four
synthesizers in a system. If the fixed address is used, this
pin can be used as a normal output port. The same pin
serves as the enable signal input in 3-wire bus mode.
Depending whether the fixed address is used or not there
are five or six open collector outputs for switching
functions available. In 3-wire bus mode there are four
open collector outputs and one lock signal output. All
open collector outputs are capable of sinking at least
10 mA. In I

C bus mode an analog-to-digital converter

(ADC) is available for digital AFC (automatic frequency
control) applications and the ports P4, P5 and P7 can also
be used as input ports.

U6239B

TELEFUNKEN Semiconductors
Rev. A3, 28-May-97

3 (15)

Functional Description

The U6239B is programmed via a 2-wire I

C bus or

3-wire bus depending on the received data format. In
I

C bus mode the three bus input pins 4, 5, 10 are used as

SDA, SCL and address select inputs or in 3-wire bus
mode as date, clock and enable inputs, respectively. The
data include the scaling factor SF and port output
information. In I

C bus mode there are some additional

functions available (ADC, bidirectional ports, etc.)

Oscillator frequency calculation :

VCO

= 16

SPF f

refosc

/SRF

vco

Locked frequency of voltage controlled oscillator

SPF : Scaling factor of programmable divider (15 bit in

C bus mode, 14 bit in 3-wire bus mode)

SRF : Scaling factor of reference divider

(

B25/B50/B140/B250/B256/B512/B1024

in I

C bus mode,

B25/B50/B100/B140/B250

B280/B500 in 3-wire bus mode)

refosc

: Reference oscillator frequency:

3.2/ 4 MHz crystal or external reference
frequency (max. 8 MHz)

The input amplifier together with a divide-by-16
prescaler provides excellent sensitivity (see "Typical

prescaler input sensitivity"). The input impedance is
shown in the diagram "Typical input impedance". When
a new divider ratio is entered according to the requested
f

VCO

, the phase detector and charge pump adjusts the

control voltage of the VCO together with the tuning
amplifier until the output signals of the programmable
divider and the reference divider are in frequency locked
and phase locked. The reference frequency may be pro-
vided by an external source, capacitively coupled into
Pin 2, or by using an on-board crystal with an 18 pF ca-
pacitor in series. The crystal operates in the series
resonance mode. The reference divider division ratio
is selectable to

B25/ B50/ B140/ B250/ B256/ B512/

B1024 in the I

C bus mode and

B25/ B50/ B100/

B140/ B250/ B280/ B500 in the 3-wire bus mode.

In I

C bus mode, the division ratio may be set via three

bits, in 3-wire bus mode via two bits and a voltage at the
reference divider select input Pin 3. In addition, there are
port outputs available for band switching and other
purposes.

Application

A typical application is shown on page 14. All input/
output interface circuits are shown on the pages 12 and
13. Some special features which are related to test- and
alignment procedures for tuner production are explained
together with the bus mode descriptions.

Absolute Maximum Ratings

All voltages are referred to GND (Pin 15)

Parameters

Symbol

Conditions

Min.

Max.

Unit

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Supply voltage

Pin 12

ÁÁÁÁ

ÁÁÁÁÁÁ

ÁÁÁÁ

0.3

ÁÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

RF input voltage

Pins 13, 14

ÁÁÁÁ

RFi

ÁÁÁÁÁÁ

ÁÁÁÁ

0.3

ÁÁÁÁÁ

Vs + 0.3

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Port output current

Pins 6-11

ÁÁÁÁ

P0, P3-7

ÁÁÁÁÁÁ

Open collector

ÁÁÁÁ

ÁÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Total port output current

Pins 6-11

ÁÁÁÁ

P0, P3-7

ÁÁÁÁÁÁ

Open collector

ÁÁÁÁ

ÁÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Port input/ output voltage

Pins 6-10

ÁÁÁÁ

P3-7

ÁÁÁÁÁÁ

In off state

ÁÁÁÁ

0.3

ÁÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Port output voltage

Pins 6-11

ÁÁÁÁ

P0, P3-7

ÁÁÁÁÁÁ

In on state

ÁÁÁÁ

0.3

ÁÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Bus input/ output voltage

Pins 4 and 5

ÁÁÁÁ

ÁÁ

ÁÁÁÁ

VSDA,

VSCL

ÁÁÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁÁÁ

ÁÁÁÁ

ÁÁ

ÁÁÁÁ

0.3

ÁÁÁÁÁ

ÁÁÁ

ÁÁÁÁÁ

ÁÁÁÁ

ÁÁ

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

SDA output current

Pin 4

ÁÁÁÁ

ISDA

ÁÁÁÁÁÁ

Open collector

ÁÁÁÁ

ÁÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Address select/ Enable input Pin 10
Port output voltage

ÁÁÁÁ

ÁÁ

ÁÁÁÁ

AS/

ENABLE/

ÁÁÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁÁÁ

Port in off

state

ÁÁÁÁ

ÁÁ

ÁÁÁÁ

0.3

ÁÁÁÁÁ

ÁÁÁ

ÁÁÁÁÁ

ÁÁÁÁ

ÁÁ

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Charge pump output voltage Pin 1

ÁÁÁÁ

ÁÁÁÁÁÁ

ÁÁÁÁ

0.3

ÁÁÁÁÁ

Vs + 0.3

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Active filter output voltage Pin 16

ÁÁÁÁ

ÁÁÁÁÁÁ

ÁÁÁÁ

0.3

ÁÁÁÁÁ

Vs + 0.3

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Crystal oscillator voltage

Pin 2

ÁÁÁÁ

ÁÁÁÁÁÁ

ÁÁÁÁ

0.3

ÁÁÁÁÁ

Vs + 0.3

ÁÁÁÁ

Reference divider select input/ Pin 3
Address mode select input

RDS/

AMS

0.3

+ 0.3

Junction temperature

125

Storage temperature

stg

125

U6239B

TELEFUNKEN Semiconductors

Rev. A3, 28-May-97

4 (15)

Operating Range

All voltages are referred to GND (Pin 15)

Parameters

Test Conditions / Pins

Symbol

Min.

Typ.

Max.

Unit

ÁÁÁÁÁÁÁÁÁ

Supply voltage

ÁÁÁÁÁÁÁÁÁ

Pin 12

ÁÁÁÁ

4.5

ÁÁÁÁ

5.5

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

Ambient temperature

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁ

amb

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

Input frequency

ÁÁÁÁÁÁÁÁÁ

Pins 13 and 14

ÁÁÁÁ

RFi

ÁÁÁÁ

250

ÁÁÁÁ

2900

ÁÁÁÁ

MHz

ÁÁÁÁÁÁÁÁÁ

Programmable divider

ÁÁÁÁÁÁÁÁÁ

C bus mode

ÁÁÁÁ

256

ÁÁÁÁ

32767

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

Programmable divider

ÁÁÁÁÁÁÁÁÁ

3-wire bus mode

ÁÁÁÁ

256

ÁÁÁÁ

16383

ÁÁÁÁ

Thermal Resistance

Parameters

Test Conditions / Pins

Symbol

Min.

Typ.

Max.

Unit

Junction ambient

Package SO16 soldered to PCB

thJA

110

K/W

Electrical Characteristics

Test conditions (unless otherwise specified): V

= 5 V, T

amb

= 25

Parameters

Test Conditions / Pins

Symbol

Min.

Typ.

Max.

Unit

ÁÁÁÁÁÁÁÁÁÁ

Supply current (prescaler on)

ÁÁÁÁÁÁÁÁÁ

Ports off

Pin 12

ÁÁÁÁÁ

ICC

ÁÁÁ

ÁÁÁÁ

ÁÁÁ

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Input sensitivity

ÁÁÁÁÁÁÁÁÁÁ

RFi

= 250 MHz

ÁÁÁÁÁÁÁÁÁ

Pin 13

ÁÁÁÁÁ

)

ÁÁÁ

100

ÁÁÁÁ

ÁÁÁ

300

ÁÁÁÁ

rms

ÁÁÁÁÁÁÁÁÁÁ

RFi

= 750 -2900 MHz

ÁÁÁÁÁÁÁÁÁ

Pin 13

ÁÁÁÁÁ

)

ÁÁÁ

ÁÁÁÁ

ÁÁÁ

300

ÁÁÁÁ

rms

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Crystal oscillator

ÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁ

Recommended crystal series
resistance

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁ

ÁÁÁ

ÁÁÁÁÁ

ÁÁÁ

ÁÁ

ÁÁÁ

ÁÁÁÁ

ÁÁ

ÁÁÁÁ

ÁÁÁ

200

ÁÁÁÁ

ÁÁ

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁ

Crystal oscillator drive level

ÁÁÁÁÁÁÁÁÁ

Pin 2

ÁÁÁÁÁ

ÁÁÁ

ÁÁÁÁ

ÁÁÁ

ÁÁÁÁ

rms

ÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁ

Crystal oscillator source
impedance

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

Nominal spread

" 15%

Pin 2

ÁÁÁÁÁ

ÁÁÁ

ÁÁÁÁÁ

ÁÁÁ

ÁÁ

ÁÁÁ

ÁÁÁÁ

ÁÁ

ÁÁÁÁ

650

ÁÁÁ

ÁÁÁÁ

ÁÁ

ÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁ

External reference input
frequency

ÁÁÁÁÁÁÁÁÁ

AC coupled sinewave

Pin 2

ÁÁÁÁÁ

ÁÁÁ

ÁÁÁÁ

ÁÁÁ

ÁÁÁÁ

MHz

ÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁ

External reference input
amplitude

ÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁ

AC coupled sinewave

Pin2

ÁÁÁÁÁ

ÁÁÁ

ÁÁÁÁÁ

ÁÁÁ

ÁÁ

ÁÁÁ

ÁÁÁÁ

ÁÁ

ÁÁÁÁ

ÁÁÁ

200

ÁÁÁÁ

ÁÁ

ÁÁÁÁ

rms

Port outputs (current limited, output function only in I

C bus mode)

Port P0 at Pin 11.
Port P3 at Pin 10, is only usable with AMS = `L' (= 3 address mode).

P0, P3 Sink current

VH = 12 V, Pins 10 and 11

ISL

0.7

1.5

Leakage current

VH = 13.2 V

Port outputs, Lock output (open collector, locked = `L'. Ports P4 P7 at Pins 69)
Lock output at Pin 11, only in 3-wire bus mode.

Saturation voltage

IL = 10 mA

VSL

)

0.5

Leakage current

VH = 13.2 V

Port inputs (Ports 4, 5 and 7 at Pins 6, 8 and 9)

Input voltage high

Vi `H'

2.7

Input voltage low

Vi `L'

0.8

Input current high

Vi `H' = 13.2 V

Ii `H'

Input current low

Vi `L' = 0 V

Ii `L'

U6239B

TELEFUNKEN Semiconductors
Rev. A3, 28-May-97

5 (15)

Electrical Characteristics (continued)

Parameters

Test Conditions / Pins

Symbol

Min.

Typ.

Max.

Unit

ADC input (ADC, Pin 7, see page 8 for ADC-levels)

Input current high

Vi `H' = 13.2 V

Ii `H'

Input current low

Vi `L' = 0 V

Ii `L'

Charge pump output (PD)

Charge pump current `H'

5I = 1, VPD = 1.7 V, Pin 1

IPDH

"180

Charge pump current `L'

5I = 0, VPD = 1.7 V, Pin 1

IPDL

"50

Charge pump leakage current

T0 = 1, VPD = 1.7 V, Pin 1

IPDTRI

Charge pump amplifier gain

Pins 1 and 16

6400

Bus inputs Data and Clock (SDA, SCL) I

C bus mode and 3-wire bus mode

Input voltage high

Pins 4 and 5

Vi `H'

5.5

Input voltage low

Pins 4 and 5

Vi `L'

1.5

Input current high

Vi `H' = V

, Pins 4 and 5

Ii `H'

Input current low

Vi `L' = 0 V, Pins 4 and 5

Ii `L'

Output voltage SDA
(open collector)

ISDA`L' = 3 mA, Pin 4

VSDA `L'

0.4

Bus input Enable, 3-wire bus mode (ENABLE, Pin 10)

Input voltage high

Pin 10

Vi `H'

75%

0.3 V

Input voltage low

Pin 10

Vi `L'

1.0

Input current high

Vi `H' = V

, Pin 10

Ii `H'

Input current low (RDS = `L')

Vi `L' = 0 V, Pin 10

Ii `L'

Input current low (RDS = `H')

Vi `L' = 0 V, Pin 10

Ii `L'

100

Address selection / port output (AS/P3, Pin 10)

Input current low (AMS = L)

Vi `L' = 0 V (3 address)

Ii `L'

Input current high (AMS = L)

Vi `H' = 13.2 V (3 address)

Ii `H'

Input current low (AMS = H)

Vi `L' = 0 V (4 address)

Ii `L'

100

Input current high (AMS = H)

Vi `H' = V

(4 address)

Ii `H'

Reference divider select/Address mode select (RDS, AMS)

Input voltage high

Pins 4 and 5

Vi `H'

5.5

Input voltage low

Pins 4 and 5

Vi `L'

1.5

Input current high

Vi `H' = V

, Pins 4 and 5

Ii `H'

Input current low

Vi `L' = 0 V, Pins 4 and 5

Ii `L'

Notes:

) RMS - voltage calculated from the measured available power on 50

) Tested with one port active. The collector voltage of an active port must not exceed 6 V.

Part Number U6239B