TDA8702 Ver la hoja de datos (PDF) - Philips Electronics
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TDA8702 Datasheet PDF : 19 Pages
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Philips Semiconductors
8-bit video digital-to-analog converter
Product specification
TDA8702
FEATURES
• 8-bit resolution
• Conversion rate up to 30 MHz
• TTL input levels
• Internal reference voltage generator
• Two complementary analog voltage outputs
• No deglitching circuit required
• Internal input register
• Low power dissipation
• Internal 75 Ω output load (connected to the analog
supply)
• Very few external components required.
APPLICATIONS
• High-speed digital-to-analog conversion
• Digital TV including:
– field progressive scan
– line progressive scan
• Subscriber TV decoders
• Satellite TV decoders
• Digital VCRs.
GENERAL DESCRIPTION
The TDA8702 is an 8-bit Digital-to-Analog Converter
(DAC) for video and other applications. It converts the
digital input signal into an analog voltage output at a
maximum conversion rate of 30 MHz. No external
reference voltage is required and all digital inputs are TTL
compatible.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
VCCA
VCCD
ICCA
ICCD
VOUT − VOUT
analog supply voltage
digital supply voltage
analog supply current
digital supply current
full-scale analog output voltage
(peak-to-peak value)
ILE
DC integral linearity error
DLE
DC differential linearity error
fCLK
maximum conversion rate
B
−3 dB analog bandwidth
Ptot
total power dissipation
note 1
note 1
note 2
ZL = 10 kΩ
ZL = 75 kΩ
fCLK = 30 MHz; note 3
4.5
5.0
5.5
V
4.5
5.0
5.5
V
−
26
32
mA
−
23
30
mA
−1.45
−0.72
−
−
−
−
−
−1.60
−0.80
−
−
−
150
250
−1.75
−0.88
±1/2
±1/2
30
−
340
V
V
LSB
LSB
MHz
MHz
mW
Note
1. D0 to D7 connected to VCCD and CLK connected to DGND.
2. The analog output voltages (VOUT and VOUT) are negative with respect to VCCA (see Table 1). The output resistance
between VCCA and each of these outputs is typically 75 Ω.
3. The −3 dB analog output bandwidth is determined by real time analysis of the output transient at a maximum input
code transition (code 0 to 255).
1996 Aug 23
2
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