Philips TSA5521T-C3, TSA5521T-C3-M1, TSA5521M-C4, TSA5521M-C3-R1, TSA5521M-C3 Datasheet

INTEGRATED CIRCUITS

TSA5520; TSA5521

1.3 GHz universal bus-controlled TV synthesizer

Product specification

1996 Oct 10

Supersedes data of 1995 Mar 16

File under Integrated Circuits, IC02

Philips Semiconductors	Product specification

1.3 GHz universal bus-controlled

TSA5520; TSA5521

TV synthesizer

FEATURES

∙Complete 1.3 GHz single chip system

∙Four PNP band switch buffers (40 mA)

∙33 V output tuning voltage

∙In-lock detector

∙15-bit programmable divider

∙Programmable reference divider ratio (512, 640 or 1024)

∙Programmable charge-pump current (60 or 280 μA)

∙Varicap drive disable

∙Universal bus protocol I2C-bus or 3-wire bus (the TSA5520/TSA5521 I2C-bus mode only includes the write mode; if both read and write modes are required the TSA5526/TSA5527 devices should be selected):

–bus protocol for 18 or 19 bits transmission (3-wire bus)

–extra protocol for 27 bits for test and features (3-wire bus)

–address plus 4 data bytes transmission (I2C-bus)

–three independent I2C-bus addresses

∙Low power and low radiation.

ORDERING INFORMATION

APPLICATIONS

∙TV tuners and front ends

∙VCR tuners.

	TYPE NUMBER		PACKAGE
		NAME	DESCRIPTION	VERSION
	TSA5520M	SSOP16	plastic shrink small outline package; 16 leads; body width 4.4 mm	SOT369-1
	TSA5520T	SO16	plastic small outline package; 16 leads; body width 3.9 mm	SOT109-1
	TSA5521M	SSOP16	plastic shrink small outline package; 16 leads; body width 4.4 mm	SOT369-1
	TSA5521T	SO16	plastic small outline package; 16 leads; body width 3.9 mm	SOT109-1

1996 Oct 10

2

Philips Semiconductors	Product specification

1.3 GHz universal bus-controlled

TSA5520; TSA5521

TV synthesizer

QUICK REFERENCE DATA

SYMBOL	PARAMETER	CONDITIONS	MIN.	TYP.	MAX.	UNIT
VCC1	supply voltage (+5 V)		4.5	-	5.5	V
VCC2	band switch supply voltage (12 V)		VCC1	12	13.5	V
ICC1	supply current		-	20	25	mA
ICC2	band switch supply current	note 1	-	50	55	mA
fRF	RF input frequency		64	-	1300	MHz
Vi(RF)	RF input voltage	80 to 150 MHz	-25	-	+3	dBm
		150 MHz to 1 GHz	-28	-	+3	dBm
		1 to 1.3 GHz	-15	-	+3	dBm
fxtal	crystal oscillator input frequency		3.2	4.0	4.48	MHz
Io(PNP)	PNP band switch buffers output current	note 2	4	-	50	mA
Ptot	total power dissipation	note 3	-	250	400	mW
Tstg	IC storage temperature		-40	-	+150	°C
Tamb	operating ambient temperature		-20	-	+85	°C

Notes

1.One band switch buffer ON with 40 mA.

2.One buffer ON, Io = 40 mA; two buffers ON, maximum sum of Io = 50 mA.

3.The power dissipation is calculated as follows:

PD = VCC1 ´ ICC1 + VCC2 ´ (ICC2 –Io) + Io ´ VCE ( satPNP) + (V33 ¤ 2) 2 ¤ 27 kW

1996 Oct 10

3

Philips Semiconductors	Product specification

1.3 GHz universal bus-controlled

TSA5520; TSA5521

TV synthesizer

GENERAL DESCRIPTION

The device is a single-chip PLL frequency synthesizer designed for TV and VCR tuning systems. The circuit consists of a divide-by-eight prescaler with its own preamplifier, a 15-bit programmable divider, a crystal oscillator and its programmable reference divider and a phase/frequency detector combined with a charge-pump which drives the tuning amplifier and the 33 V output. Four high-current PNP band switch buffers are provided for band switching. Two PNP buffers can be switched on simultaneously. The sum of the collector currents is limited to 50 mA.

Depending on the reference divider ratio (512, 640 or 1024), the phase comparator operates at 3.90625 kHz, 6.25 kHz or 7.8125 kHz using a 4 MHz crystal.

The lock detector output is LOW when the PLL loop is locked. In the test mode, this output is used as a test

output for fref and 1/2fdiv (see Table 6). The device can be controlled in accordance with the I2C-bus format or the

3-wire bus format depending on the voltage applied to the SW input (see Table 2).

I2C-bus format (SW = LOW)

Five serial bytes (including address byte) are required to address the device, select the VCO frequency, program the four PNP band switch buffers, set the charge-pump current and the reference divider ratio.

The device has three independent I2C-bus addresses which can be selected by applying a specific voltage on the CE input (see Table 5). The general address C2 is always valid. When the I2C-bus format is fully used, TSA5520 and TSA5521 are equal.

3-wire bus format (SW = VCC1 or open-circuit)

Data is transmitted to the device during a HIGH level on the CE input (enable line pin 15). The device is compatible with 18-bit and 19-bit data formats. The first four bits are used to program the PNP band switch buffers and the remaining bits are used to control the programmable divider. A 27-bit data format may also be used to set the charge-pump current, the reference divider ratio and for test purposes. The difference between TSA5520 and TSA5521 are given in Table 1.

When the 27-bit format is used, the TSA5520 and TSA5521 are equal and the reference divider is controlled by the RSA and RSB bits (see Table 7). More details are given in Chapter “Functional description” Section “3-wire

bus mode (SW = open-circuit or VCC1); see Figs 3, 4 and 5”.

Table 1 Differences between TSA5520 and TSA5521

TYPE NUMBER	DATA WORD	REFERENCE DIVIDER	FREQUENCY STEP (kHz)
TSA5520	18-bit	512(1)	62.5
TSA5520	19-bit	1024(1)	31.25
TSA5521	18-bit or 19-bit	640(2)	50

Notes

1.The selection of the reference divider is given by an automatic identification of the data word length.

2.The reference divider is set to 640 at power-on reset.

1996 Oct 10

4

Philips Semiconductors	Product specification

1.3 GHz universal bus-controlled

TSA5520; TSA5521

TV synthesizer

BLOCK DIAGRAM

1

PRESCALER

15-BIT

9

CP

AMP

PROGRAMMABLE

RF

DIVIDE-BY-8

DIVIDER

10

Vtune

fdiv

DIGITAL

16

XTAL

DIVIDER

CHARGE

f ref

PHASE

AMP

XTAL

PUMP

OSCILLATOR

512/640/1024

COMPARATOR

CP

RSA RSB

T2,T1,T0

POWER-ON

15-BIT FREQUENCY

RESET

REGISTER

IN-LOCK

13

DETECTOR

LOGIC

SCL

LOCK

14

I2C/3-WIRE BUS

SDA

RECEIVER

15

RSA,RSB

CE

3

VCC1

OS

4-BIT BAND SWITCH

GATE

7-BIT CONTROL

2

11

REGISTER

REGISTER

VEE

SW

T2,T1,T0

12

LOCK

TSA5520

TSA5521

4

8

7

6

5

VCC2

BS1

BS2

BS3

BS4

MKA965

Fig.1

Block diagram.

1996 Oct 10

5

Philips Semiconductors	Product specification

1.3 GHz universal bus-controlled

TSA5520; TSA5521

TV synthesizer

PINNING

SYMBOL	PIN	DESCRIPTION
RF	1	RF signal input
VEE	2	ground
VCC1	3	supply voltage (+5 V)
VCC2	4	band switch supply voltage (+12 V)
BS4	5	PNP band switch buffer output 4
BS3	6	PNP band switch buffer output 3
BS2	7	PNP band switch buffer output 2
BS1	8	PNP band switch buffer output 1
CP	9	charge-pump output
Vtune	10	tuning voltage output
SW	11	bus format selection input, I2C-bus or
		3-wire
LOCK	12	lock detector output
SCL	13	serial clock input
SDA	14	serial data input/output
CE	15	chip enable/address selection input
XTAL	16	crystal oscillator input

FUNCTIONAL DESCRIPTION

The device is controlled via the I2C-bus or the 3-wire bus depending on the voltage applied to the SW input (pin 11). A HIGH level on the SW input enables the 3-wire bus inputs which are Chip Enable (CE), serial data input (SDA) and serial clock input (SCL). A LOW level on the SW input enables the I2C-bus inputs which are CE [Address Selection (AS) input], serial data input/output (SDA) and serial clock input (SCL). The bus format selection is given in Table 2.

I2C-bus mode (SW = LOW); see Table 3

Data bytes can be sent to the device after the address transmission (first byte). Four data bytes are required to fully program the device. The bus receiver has an auto-increment facility which permits the programming of the device within one single transmission

(address + 4 data bytes).

The device can also be partially programmed providing that the first data byte following the address is Divider Byte 1 (DB1) or the Control Byte (CB). The bits in the data bytes are defined in Table 3.

Fig.2 Pin configuration.

The first bit of the first data byte transmitted indicates whether frequency data (first bit = 0) or control and band switch data (first bit = 1) will follow. Until an I2C-bus STOP command is sent by the controller, additional data bytes can be entered without the need to re-address the device. The frequency register is loaded after the 8th clock pulse of the second Divider Byte (DB2), the control register is loaded after the 8th clock pulse of the Control Byte (CB) and the band switch register is loaded after the 8th clock pulse of the Band switch Byte (BB).

I2C-bus address selection

The module address contains programmable address bits (MA1 and MA0) which offer the possibility of having several synthesizers (up to 3) in one system by applying a specific voltage to the CE input.

The relationship between MA1 and MA0 and the input voltage applied to the CE input is given in Table 5.

1996 Oct 10

6

Philips Semiconductors	Product specification

1.3 GHz universal bus-controlled

TSA5520; TSA5521

TV synthesizer

Table 2 Bus format selection

PIN

NAME

3-WIRE BUS MODE

I2C BUS MODE

11

SW

open or HIGH

LOW

13

SCL

clock input

SCL input

14

SDA

data input

SDA input/output

15

CE

chip enable input

address selection input

Table 3 I2C-bus data format

BYTE

MSB

DATA BYTE

LSB

SLAVE ANSWER

Address Byte (ADB)

1

1

0

0

0

MA1

MA0

0

A

Divider Byte 1 (DB1)

0

N14

N13

N12

N11

N10

N9

N8

A

Divider Byte 2 (DB2)

N7

N6

N5

N4

N3

N2

N1

N0

A

Control Byte (CB)

1

CP

T2

T1

T0

RSA

RSB

OS

A

Band switch Byte (BB)

X

X

X

X

BS4

BS3

BS2

BS1

A

Table 4 Description of Table 3

SYMBOL

DESCRIPTION

A

acknowledge

MA1 and MA0

programmable address bits (see Table 5)

N14 to N0

programmable divider bits; N = N14 × 214 + N13 × 213 + ... + N1 × 2 + N0

CP

charge-pump current; CP = 0 = 60 μA; CP = 1 = 280 μA

T2 to T0

test bits (see Table 6); for normal operation T2 = 0, T1 = 0 and T0 = 1

RSA and RSB

reference divider ratio select bits (see Table 7)

OS

tuning amplifier control bit; for normal operation OS = 0 and tuning voltage is ON;

when OS = 1 tuning voltage is OFF (high impedance)

BS4 to BS1

PNP band switch buffers control bits; when BSn = 0 buffer n is OFF;

when BSn = 1 buffer n is ON

X

don’t care

Table 5 I2C-bus address selection

VOLTAGE APPLIED TO THE

MA1

MA0

CE INPUT (SW = LOW)

0 to 0.1VCC1

0

0

Always valid

0

1

0.4VCC1 to 0.6VCC1

1

0

0.9VCC1 to VCC1

1

1

1996 Oct 10

7

Philips Semiconductors	Product specification

1.3 GHz universal bus-controlled

TSA5520; TSA5521

TV synthesizer

3-wire bus mode (SW = open-circuit or VCC1); see Figs 3, 4 and 5

During a HIGH level on the CE input, the data is clocked into the data register at the HIGH-to-LOW transition of the clock pulse. The first four bits control the band switch buffers and are loaded into the internal band switch register on the 5th rising edge of the clock pulse.

The frequency bits are loaded into the frequency register at the HIGH-to-LOW transition of the chip enable line when an 18-bit or 19-bit data word is transmitted.

At power-on the charge-pump current is set to 280 mA, the tuning voltage output is disabled (Vtune = 33 V in application; see Fig.12), the test bits T2, T1 and T0 are set to the normal mode and RSB is set to 1 (TSA5520) or 0 (TSA5521). When an 18-bit data word is transmitted, the most significant bit of the divider N14 is internally set to 0 and bit RSA is set to 1. When a 19-bit data word is transmitted, bit RSA is set to 0.

When a 27-bit word is transmitted, the frequency bits are loaded into the frequency register on the 20th rising edge of the clock pulse and the control bits at the HIGH-to-LOW transition of the chip enable line. In this mode, the reference divider is given by the RSA and RSB bits (see Table 7). The test bits T2, T1 and T0, the charge-pump bit CP, the ratio select bit RSB and the OS bit can only be selected or changed with a 27-bit transmission. They remain programmed if an 18-bit or a 19-bit transmission

occurs. Only RSA is controlled by the transmission length when the 18-bit or 19-bit format is used.

A data word of less than 18 bits will not affect the frequency register of the device. The definition of the bits is unchanged compared to the I2C bus mode.

The power-on detection threshold voltage VPOR is fixed to VCC1 = 2 V at room temperature. Below this threshold, the device is reset to the power-on state described above.

Table 6		Test bits
T2	T1		T0	DEVICE OPERATION
0	0		1	normal mode
0	1		X	charge-pump is OFF
1	1		0	charge-pump is sinking current
1	1		1	charge-pump is sourcing current
1	0		0	fref is available at LOCK output
1	0		1	1¤2fdiv is available at LOCK output
Table 7 Ratio select bits
	RSA			RSB	REFERENCE DIVIDER
	X			0	640
	0			1	1024
	1			1	512

For TSA5520 bit RSB = 1 at power-on; the reference divider is 512 or 1024.

For TSA5521 bit RSB = 0 at power-on; the reference divider is 640.

For TSA5520/TSA5521 the value of RSB can also be programmed by using the 27-bit data format. When returning to the normal mode, bit RSB remains as programmed with the 27-bit data word.

Fig.3 Normal mode; 18-bit data format (RSA = 1).

1996 Oct 10

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