Philips TDA5051A User Manual

TDA5051A

Home automation modem

Rev. 5 — 13 January 2011 Product data sheet

1. General description

The TDA5051A is a modem IC, specifically dedicated to ASK transmission by means of the home power supply network, at 600 baud or 1200 baud data rate. It operates from a single 5 V supply.

2. Features and benefits

 Full digital carrier generation and shaping  Modulation/demodulation frequency set by clock adjustment, from microcontroller or

on-chip oscillator

 High clock rate of 6-bit D/A (Digital to Analog) converter for rejection of aliasing

components

 Fully integrated output power stage with overload protection  Automatic Gain Control (AGC) at receiver input  8-bit A/D (Analog to Digital) converter and narrow digital filtering  Digital demodulation delivering baseband data  Easy compliance with EN50065-1 with simple coupling network  Few external components for low cost applications  SO16 plastic package

3. Applications

 Home appliance control (air conditioning, shutters, lighting, alarms and so on)  Energy/heating control  Amplitude Shift Keying (ASK) data transmission using the home power network

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4. Quick reference data

TDA5051A

Home automation modem

Table 1. Quick reference data

Symbol Parameter Conditions Min Typ Max Unit

DD(tot)

supply voltage 4.75 5.0 5.25 V total supply current f

=8.48MHz

osc

Reception mode - 28 38 mA

[1]

Transmission mode; DATA_IN

=0; ZL=30Ω

-4768mA

Power-down mode - 19 25 mA f f V

cr osc

o(rms)

i(rms)

carrier frequency oscillator frequency 6.08 - 9.504 MHz output carrier signal (RMS value) DATA_IN = LOW;

input signal (RMS value)

THD total harmonic distortion on CISPR16 load

= CISPR16

[2]

- 132.5 - kHz

120 - 122 dBμV

[3]

82 - 122 dBμV

- −55 - dB

with coupling network

amb

[1] The value of the total transmission mode current is the sum of I [2] Frequency range corresponding to the EN50065-1 band. However, the modem can operate at any lower oscillator frequency. [3] The minimum value can be improved by using an external amplifier; see application diagrams Figure 19

ambient temperature −50 - +100 °C

DD(RX/TX)(tot)

+ I

in the Table 5 “Characteristics”.

DD(PAMP)

and Figure 20.

5. Ordering information

Table 2. Ordering information

Type number Package

TDA5051AT SO16 plastic small outline package; 16 leads; body width 7.5 mm SOT162-1

Name Description Version

Product data sheet Rev. 5 — 13 January 2011 2 of 29

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6. Block diagram

TDA5051A

Home automation modem

DATA_IN

CLK_OUT

OSC1

OSC2

DATA_OUT

DGND5AGND12V

OSCILLATOR

DIGITAL

DEMODULATOR

TEST1 SCANTEST

DDA

ROM

CONTROL LOGIC

DDD

311

D/A

DAC clock

modulated

carrier

DDAP

POWER

DRIVE

WITH

PROTECTION

TDA5051A

filter clock

÷ 2

DIGITAL

BAND-PASS

FILTER

PEAK

DETECT

A/D

U/D

COUNT

002aaf038

TX_OUT

APGND

RX_IN

Fig 1. Block diagram

Product data sheet Rev. 5 — 13 January 2011 3 of 29

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7. Pinning information

7.1 Pinning

TDA5051A

Home automation modem

DATA_IN TEST1

DATA_OUT PD

CLK_OUT V

SCANTEST V

DDD

TDA5051AT

DGND AGND

OSC1 TX_OUT

OSC2 APGND

Fig 2. Pin configuration for SO16

7.2 Pin description

Table 3. Pin description

Symbol Pin Description

DATA_IN DATA_OUT V

DDD

CLK_OUT 4 clock output DGND 5 digital ground SCANTEST 6 test input (LOW in application) OSC1 7 oscillator input OSC2 8 oscillator output APGND 9 analog ground for power amplifier TX_OUT 10 analog signal output V

DDAP

AGND 12 analog ground V

DDA

RX_IN 14 analog signal input PD 15 power-down input (active HIGH) TEST1 16 test input (HIGH in application)

1 digital data input (active LOW) 2 digital data ou tput (active LOW) 3 digital supply voltage

11 analog supply voltage for power amplifier

13 analog supply voltage

002aaf039

RX_IN

DDA

DDAP

Product data sheet Rev. 5 — 13 January 2011 4 of 29

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8. Functional description

Both transmission and reception stages are controlled either by the master clock of the microcontroller or by the on-chip reference oscillator connected to a crystal. This ensures the accuracy of the transmission carrier and the exact trimming of the digital filter, thus making the performance totally independent of application disturbances such as component spread, temperature, supply drift and so on.

TDA5051A

Home automation modem

The interface with the power network is made by means of an LC network (see Figure 15 The device includes a power output stage that feeds a 120 dBμV (RMS) signal on a typical 30 Ω load.

To reduce power consumption, the IC is disabled by a power-down input (pin PD): in this mode, the on-chip oscillator remains active and the clock continues to be supplied at pin CLK_OUT. For low-power operation in reception mode, this pin can be dynamically controlled by the microcontroller, see Section 8.4 “

When the circuit is connected to an external clock generator (see Figure 6 signal must be applied at pin OSC1 (pin 7); OSC2 (pin 8) must be left open-circuit.

Figure 7

All logic inputs and outputs are compatible with TTL/CMOS levels, providing an easy connection to a standard microcontroller I/O port.

The digital part of the IC is fully scan-testable. Two digital inputs, SCANTEST and TEST1, are used for production test: these pins must be left open-circuit in functional mode (correct levels are internally defined by pull-up or pull-down resistors).

shows the use of the on-chip clock circuit.

Power-down mode”.

), the clock

8.1 Transmission mode

To provide strict stability with respect to environmental conditions, the carrier frequency is generated by scanning the ROM memory under t he con trol of the microcon troller clock or the reference frequency provided by the on-chip oscillator. High frequency clocking rejects the aliasing components to such an extent that they are filtered by the coupling LC network and do not cause any significant disturbance. The data modulation is applied through pin DATA_IN (shaping). Harmonic components are limited in this process, thus avoiding unaccep table disturbance of the transmission channel (according to CISPR16 and EN50065-1 recommendations). A −55 dB Tot al Harmonic Distortion ( THD) is reached when the typical LC coupling network (or an equivalent filter) is used.

and smoothly applied by specific digital circuits to the carrier

The DAC and the power stage are set in order to provide a maximum signal level of 122 dBμV (RMS) at the output.

The output of the power stage (TX_OUT) must always be connected to a decoup ling capacitor, because of a DC level of 0.5V device is not transmitting. This pin must also be protected against overvoltage and negative transient signals. The DC level of TX_OUT can be used to bias a unipolar transient suppressor, as shown in the application diagram (see Figure 15

Direct connection to the mains is done through an LC network for low-cost applications. However, an HF signal transformer could be used when power-line insulation has to be performed.

Product data sheet Rev. 5 — 13 January 2011 5 of 29

at this pin, which is present even when the

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Remark: In transmission mode, the receiving part of the circuit is not disabled and the

detection of the transmitted signal is normally performed. In this mode, the gain chosen before the beginning of the transmission is stored, and the AGC is internally set to

−6dB as long as DATA_IN

8.2 Reception mode

The input signal received by the modem is applied to a wide range input amplifier with AGC (−6 dB to +30 dB). This is basically for noise performance improvement and signal level adjustment, which ensures a maximum sensitivity of the ADC. An 8-bit conversion is then performed, followed by digital band-pass filtering, to meet the CISPR16 normalization and to comply with some additional limitations met in current applications.

After digital demodulation, the baseband data signal is made available after pulse shaping.

The signal pin (RX_IN) is a high-impedance input which has to be protected and DC decoupled for the same reasons as with pin TX_OUT. The high sensitivity (82 dBμV) of this input requires an efficient 50 Hz rejection filter (realized by the LC coupling network), which also acts as an anti-aliasing filter for the internal digital processing; (see Figure 15

TDA5051A

Home automation modem

is LOW. Then, the old gain setting is automatically restored.

8.3 Data format

8.3.1 Transmission mode

The data input (DATA_IN) is active LOW: this means that a burst is generated on the line (pin TX_OUT) when DATA_IN

Pin TX_OUT is in a high-impedance state as long as the device is not transmitting. Successive logic 1s are treated in a Non-Return-to-Zero (NRZ) mode, see pulse shapes in Figure 8

and Figure 9.

8.3.2 Reception mode

The data output (pin DATA_OUT) is active LOW; this means that the data output is LOW when a burst is received. Pin DATA_OUT

8.4 Power-down mode

Power-down input (pin PD) is active HIGH; this means that the power consumption is minimum when pin PD is HIGH. Now, all functions are disabled, except clock generation.

pin is LOW.

remains LOW as long as a burst is received.

Product data sheet Rev. 5 — 13 January 2011 6 of 29

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9. Limiting values

Table 4. Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).

Symbol Parameter Conditions Min Max Unit

osc

stg

amb

10. Characteristics

TDA5051A

Home automation modem

supply voltage 4.5 5.5 V oscillator frequency - 12 MHz storage temperature −50 +150 °C ambient temperature −50 +100 °C junction temperature - 125 °C

Table 5. Characteristics

DDD=VDDA

=5V±5%; T

=−40°C to +85°C; V

amb

connected to V

DDD

; DGND connected to AGND.

DDA

Symbol Parameter Conditions Min Typ Max Unit

Supply

DD(tot)

supply voltage 4.75 5 5.25 V total supply current f

=8.48MHz

osc

Reception mode - 28 38 mA

[1]

Transmission

-4768mA mode; DATA_IN

=0;

ZL=30Ω Power-down mode - 19 25 mA

DD(RX/TX)(tot)

total analog + digital supply current

VDD=5V± 5%; Transmission or

-2838mA

Reception mode

DD(PD)(tot)

total analog + digital supply current

VDD=5V± 5%; PD = HIGH;

-1925mA

Power-down mode

DD(PAMP)

power amplifier supply current

VDD=5V± 5%;

=30Ω;

DATA_IN

= LOW in

-1930mA

Transmission mode

DD(PAMP)(max)

maximum power amplifier supply current

VDD=5V± 5%;

=1Ω;

DATA_IN

= LOW in

-76-mA

Transmission mode

DATA_IN

and PD inputs; DATA_OUT and CLK_OUT outputs

HIGH-level input voltage 0.2VDD+0.9 - VDD+0.5 V LOW-level input voltage −0.5 - 0.2VDD− 0.1 V HIGH-level output voltage IOH= −1.6 mA 2.4 - - V LOW-level output voltage IOL= 1.6 mA - - 0.45 V

Product data sheet Rev. 5 — 13 January 2011 7 of 29

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TDA5051A

Home automation modem

Table 5. Characteristics …continued

DDD=VDDA

Symbol Parameter Conditions Min Typ Max Unit

OSC1 input and OSC2 output (OSC2 only used for driving external quartz crystal; must be left open-circuit when using an external clock generator)

Clock

osc

osc/fcr

osc/fCLKOUT

Transmission mode

W(DI)(min)

o(rms)

o(max)

THD total harmonic distortion on

−20dB

=5V±5%; T

HIGH-level input voltage 0.7V

=−40°C to +85°C; V

amb

connected to V

DDD

; DGND connected to AGND.

DDA

-V

+0.5 V

LOW-level input voltage −0.5 - 0.2VDD− 0.1 V HIGH-level output voltage IOH= −1.6 mA 2.4 - - V LOW-level output voltage IOL= 1.6 mA - - 0.45 V

oscillator frequency 6.080 - 9.504 MHz ratio between oscillator and

-64-

carrier frequency ratio between oscillator and

-2-

clock output frequency

carrier frequency f set-up time of the shaped

burst hold time of the shaped

burst minimum pulse width of

DATA_IN

signal

output carrier signal (RMS value)

power amplifier maximum output current (peak value)

output impedance of the

=8.48MHz

osc

= 8.48 MHz;

osc

see Figure 8 f

= 8.48 MHz;

osc

see Figure 8 f

= 8.48 MHz;

osc

see Figure 8 DATA_IN = LOW;

ZL= CISPR16 DATA_IN = LOW;

=1Ω

[2]

- 132.5 - kHz

- 170 - μs

- 190 - μs

120 - 122 dBμV

- 160 - mA

-5-Ω

power amplifier output DC level at

-2.5-V

pin TX_OUT

CISPR16 load with the coupling network (measured on the first ten harmonics)

= 121 dBμV on

o(rms)

CISPR16 load;

= 8.48 MHz;

osc

DATA_IN

=LOW

- −55 - dB

(no modulation); see Figure 3

and

Figure 22

bandwidth of the shaped output signal (at −20 dB) on CISPR16 load with the coupling network

= 121 dBμV on

o(rms)

CISPR16 load;

= 8.48 MHz;

osc

DATA_IN = 300 Hz;

- 3000 - Hz

duty factor = 50 %; see Figure 4

Product data sheet Rev. 5 — 13 January 2011 8 of 29

NXP Semiconductors

TDA5051A

Home automation modem

Table 5. Characteristics

DDD=VDDA

=5V±5%; T

…continued

=−40°C to +85°C; V

amb

connected to V

DDD

; DGND connected to AGND.

DDA

Symbol Parameter Conditions Min Typ Max Unit

Reception mode

i(rms)

analog input signal

[3]

82 - 122 dBμV

(RMS value)

AGC

c(AGC)

DC level at pin RX_IN - 2.5 - V RX_IN input impedance - 50 - kΩ AGC range - 36 - dB AGC time constant f

= 8.48 MHz;

osc

- 296 - μs

see Figure 5

d(dem)(su)

demodulation delay set-up time

d(dem)(h)

demodulation delay hold time

det

detection bandwidth f

BER bit error rate f

= 8.48 MHz;

osc

- 350 400 μs

see Figure 21 f

= 8.48 MHz;

osc

- 420 470 μs

see Figure 21

=8.48MHz-3-kHz

osc

= 8.48 MHz;

osc

-1-1× 10

600 baud; S/N = 35 dB; signal 76 dBμV; see Figure 23

Power-up timing

d(pu)(TX)

delay between power-up and DATA_IN

transmission mode

XTAL = 8.48 MHz; C1 = C2 = 27 pF; Rp=2.2MΩ;

-1-μs

see Figure 10

d(pu)(RX)

delay between power-up and DATA_OUT in reception mode

XTAL = 8.48 MHz; C1 = C2 = 27 pF; Rp=2.2MΩ;

= 132.5 kHz;

RXIN

-1-μs

120 dBμV sine wave; see Figure 11

Power-down timing

d(pd)(TX)

delay between PD = 0 and DATA_IN

in transmission

= 8.48 MHz;

osc

see Figure 12

-10-μs

mode

d(pd)(RX)

delay between PD = 0 and DATA_OUT

in reception

mode

= 8.48 MHz;

osc

= 132.5 kHz;

RXIN

120 dBμV sine wave;

- 500 - μs

see Figure 13

active(min)

minimum active time with T = 10 ms power-down period in reception mode

= 8.48 MHz;

osc

= 132.5 kHz;

RXIN

120 dBμV sine wave;

-1-μs

see Figure 14

−4

Product data sheet Rev. 5 — 13 January 2011 9 of 29

DD(RX/TX)(tot)

+ I

DD(PAMP)

and Figure 20.

+ 20 hidden pages

Philips TDA5051A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1. General description

2. Features and benefits

3. Applications

4. Quick reference data

5. Ordering information

6. Block diagram

7. Pinning information

7.1 Pinning

7.2 Pin description

8. Functional description

8.1 Transmission mode

8.2 Reception mode

8.3 Data format

8.3.1 Transmission mode

8.3.2 Reception mode

8.4 Power-down mode

9. Limiting values

10. Characteristics