TDA8822 Datasheet, PDF (16/28 Pages) NXP Semiconductors – Universal I2C-bus programmable RF modulator

Philips Semiconductors
Universal I²C-bus programmable RF
modulator
Preliminary specification
TDA8822
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
XTAL characteristics
|Z_XTAL|
XTAL input impedance
absolute value;
600
1200 −
Ω
with a 4 MHz crystal
Output Port characteristics
V_PORT
I_PORT(lk)
I_PORT(sink)
low voltage
off-state leakage current
sinking current in the port
port on; I_PORT = 10 mA −
port off; V_CCD = 5.5 V
−
port on
10
150 400
mV
−
10
µA
−
−
mA
TPSG pin characteristics
V_TPSG(on) voltage on pin TPSG to switch the
TPSG on
0
−
1.5
V
V_TPSG(off) voltage on pin TPSG to switch the
TPSG off
3.0
−
V_CCD
V
I_TPSGL
I_TPSGH
I_TPSG(sink)
LOW input current in pin TPSG
HIGH input current in pin TPSG
output sinking current in pin TPSG
TPSG to DGND
TPSG to V_CCD
TPSG set on using
I²C-bus
−100 −
−
−
10
−
−
µA
100
µA
−
mA
V_TPSG(sink) voltage on pin TPSG used as output TPSG set on using
−
150 400
mV
I²C-bus
I²C-bus receiver characteristics, pins SCL and SDA
f_SCL
frequency on SCL line
−
−
V_IH
HIGH level input voltage
3
−
V_IL
LOW level input voltage
0
−
I_IH
HIGH level input current
V_IH = 5 V; V_CCD = 0 or 5 V −
−
I_IL
LOW level input current
V_IL = 0 V; V_CCD = 0 or 5 V −10
−
V_SDA(ack) acknowledge output voltage on SDA during acknowledge
−
−
pulse; I_IL = 3 mA
100
kHz
5.5
V
1.5
V
10
µA
−
µA
0.4
V
Notes
1. Ratio between the CCIR 17-line bar amplitude (corresponding to the level difference between black and white;
see Fig.4) and the RMS value of the noise on a black line (line 22 or 335) measured on the video signal after
demodulation. Measurement is done for frequencies between 200 kHz and 5 MHz. Measurement is unweighted.
2. Measured on CCIR 330 line, corresponding to a 5-step staircase with a chroma carrier of amplitude equal to 0.3
times the voltage between sync pulse and white (see Fig.5). The video signal is 500 mV (p-p). The modulation depth
is adjusted using the I²C-bus to MD setting = 4 (82.5% typical modulation depth).
3. Measured with a spectrum analyser with ‘peak hold’ function, applying a 500 mV (p-p) sine wave at the video input
of the IC, with a sweeping frequency between 0.5 and 6.0 MHz. The reference is the value measured at 1.0 MHz.
4. To have a deviation between 50 and 250 kHz, the audio frequency must be higher than 100 Hz.
5. Measured with an audio frequency of 1 kHz with a level adjusted to get a deviation of 50 kHz with DEV setting = 2,
using CCIR 468-3 weighting filter, with a quasi-peak detection. The input signal has pre-emphasis and the receiver
has de-emphasis. Video signal is 500 mV (p-p) EBU colour bars on pin VIDEO.
1997 Jan 08
16