Philips TSA5512M Datasheet

INTEGRATED CIRCUITS

DATA SH EET

TSA5512

1.3 GHz Bidirectional I controlled synthesizer

Product speciﬁcation File under Integrated Circuits, IC02

C-bus

October 1992

Philips Semiconductors Product speciﬁcation

1.3 GHz Bidirectional I2C-bus controlled synthesizer

FEATURES

• Complete 1.3 GHz single chip system

• Low power 5 V, 35 mA

• I2C-bus programming

• In-lock flag

• Varicap drive disable

• Low radiation

• Address selection for Picture-In-Picture (PIP), DBS

tuner (3 addresses)

• Analog-to-digital converter

• 8 bus controlled ports (6 for TSA5512T), 8 open

collector outputs (4 bidirectional)

• Power-down flag

APPLICATIONS

• TV tuners

• VCR Tuners

DESCRIPTION

The TSA5512 is a single chip PLL frequency synthesizer designed for TV tuning systems. Control data is entered via the I2C-bus; five serial bytes are required to address the device, select the oscillator frequency, programme the eight output ports and set the charge-pump current. Four of these ports can also be used as input ports (three general purpose I/O ports, one ADC). Digital information concerning those ports can be read out of the TSA5512 on the SDA line (one status byte) during a READ operation. A flag is set when the loop is “in-lock” and is read during a READ operation. The device has one fixed I2C-bus address and 3 programmable addresses, programmed by applying a specific voltage on Port 3. The phase comparator operates at 7.8125 kHz when a 4 MHz crystal is used.

TSA5512

ORDERING INFORMATION

EXTENDED TYPE

NUMBER

TSA5512 18 DIL plastic SOT102 TSA5512T 16 SO plastic SOT109A TSA5512AT 20 SO plastic SOT163A TSA5512M 20 SSOP plastic SOT266

Note

1. SOT102-1; 1996 December 5.

2. SOT109-1; 1996 December 5.

3. SOT163-1; 1996 December 5.

4. SOT266-1; 1996 December 5.

PINS PIN POSITION MATERIAL CODE

PACKAGE

(1)

(2) (3)

(4)

October 1992 2

Philips Semiconductors Product speciﬁcation

1.3 GHz Bidirectional I2C-bus controlled synthesizer

TSA5512

QUICK REFERENCE DATA

SYMBOL PARAMETER MIN. TYP. MAX. UNIT

supply voltage − 5 − V

supply current − 35 − mA ∆fr frequency range 64 − 1300 MHz V

input voltage level

80 MHz to 150 MHz 12 − 300 mV 150 MHz to 1 GHz 9 − 300 mV 1 GHz to 1.3 GHz 40 − 300 mV

XTAL

amb

stg

crystal oscillator frequency 3.2 4.0 4.48 MHz

open-collector output current 5 −−mA

operating ambient temperature range −10 − +80 °C

IC storage temperature range −40 − +150 °C

October 1992 3

Philips Semiconductors Product speciﬁcation

1.3 GHz Bidirectional I2C-bus controlled synthesizer

TSA5512

October 1992 4

Fig.1 Block diagram.

Philips Semiconductors Product speciﬁcation

1.3 GHz Bidirectional I2C-bus controlled synthesizer

TSA5512

Fig.2 Pin configuration for SOT102. Fig.3 Pin configuration for SOT109.

Fig.4 Pin configuration for SOT163/SOT266.

October 1992 5

Philips Semiconductors Product speciﬁcation

1.3 GHz Bidirectional I2C-bus controlled synthesizer

PINNING

SYMBOL

SOT102 SOT109

SOT163 SOT266

PD 1 1 1 charge-pump output Q1 2 2 2 crystal oscillator input 1 Q2 3 3 3 crystal oscillator reference voltage n.c. −−4 not connected SDA 4 4 5 serial data input/output SCL 5 5 6 serial clock input P7 6 6 7 port output/input (general purpose) n.c. −−8 not connected P6 7 7 9 port output/input for general purpose ADC P5 8 8 10 port output/input (general purpose) P4 9 9 11 port output/input (general purpose) P3 10 10 12 port output/input for address selection P2 11 11 13 port output P1 12 − 14 port output P0 13 − 15 port output V RF RF V

IN1 IN2

14 12 16 voltage supply 15 13 17 UHF/VHF signal input 1 16 14 18 UHF/VHF signal input 2 (decoupled) 17 15 19 ground

UD 18 16 20 drive output

DESCRIPTION

TSA5512

FUNCTIONAL DESCRIPTION

The TSA5512 is controlled via the two-wire I

C-bus. For programming, there is one module address (7 bits) and the R/W

bit for selecting READ or WRITE mode.

WRITE mode: R/W = 0 (see Table 1)

After the address transmission (first byte), data bytes can be sent to the device. Four data bytes are required to fully program the TSA5512. The bus transceiver has an auto-increment facility which permits the programming of the TSA5512 within one single transmission (address + 4 data bytes).

The TSA5512 can also be partially programmed on the condition that the first data byte following the address is byte 2 or byte 4. The meaning of the bits in the data bytes is given in Table 1. The first bit of the first data byte transmitted indicates whether frequency data (first bit = 0) or charge pump and port information (first bit = 1) will follow. Until an I2C-bus STOP condition is sent by the controller, additional data bytes can be entered without the need to re-address the device. This allows a smooth frequency sweep for fine tuning or AFC purpose. At power-on the ports are set to the high impedance state.

The 7.8125 kHz reference frequency is obtained by dividing the output of the 4 MHz crystal oscillator by 512. Because the input of UHF/VHF signal is first divided by 8 the step size is 62.5 kHz. A 3.2 MHz crystal can offer step sizes of 50 kHz.

October 1992 6

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