TDA8702T [NXP]

8-bit video digital-to-analog converter; 8位的视频数字到模拟转换器
TDA8702T
型号: TDA8702T
厂家: NXP    NXP
描述:

8-bit video digital-to-analog converter
8位的视频数字到模拟转换器

转换器 数模转换器 光电二极管
文件: 总19页 (文件大小:124K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
INTEGRATED CIRCUITS  
DATA SHEET  
TDA8702  
8-bit video digital-to-analog  
converter  
1996 Aug 23  
Product specification  
Supersedes data of April 1993  
File under Integrated Circuits, IC02  
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
FEATURES  
APPLICATIONS  
High-speed digital-to-analog conversion  
8-bit resolution  
Conversion rate up to 30 MHz  
TTL input levels  
Digital TV including:  
– field progressive scan  
– line progressive scan  
Subscriber TV decoders  
Satellite TV decoders  
Digital VCRs.  
Internal reference voltage generator  
Two complementary analog voltage outputs  
No deglitching circuit required  
Internal input register  
Low power dissipation  
GENERAL DESCRIPTION  
Internal 75 output load (connected to the analog  
supply)  
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.  
Very few external components required.  
QUICK REFERENCE DATA  
SYMBOL  
VCCA  
PARAMETER  
analog supply voltage  
CONDITIONS  
MIN.  
4.5  
TYP.  
5.0  
MAX.  
5.5  
UNIT  
V
VCCD  
ICCA  
ICCD  
digital supply voltage  
analog supply current  
digital supply current  
4.5  
5.0  
26  
23  
5.5  
32  
30  
V
note 1  
mA  
mA  
note 1  
VOUT VOUT full-scale analog output voltage  
note 2  
(peak-to-peak value)  
ZL = 10 kΩ  
ZL = 75 kΩ  
1.45  
1.60  
0.80  
1.75  
0.88  
±1/2  
±1/2  
30  
V
0.72  
V
ILE  
DLE  
fCLK  
B
DC integral linearity error  
DC differential linearity error  
maximum conversion rate  
3 dB analog bandwidth  
total power dissipation  
LSB  
LSB  
MHz  
MHz  
mW  
fCLK = 30 MHz; note 3  
150  
250  
Ptot  
340  
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 .  
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
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
ORDERING INFORMATION  
PACKAGE  
TYPE  
NUMBER  
NAME  
DESCRIPTION  
VERSION  
TDA8702  
DIP16  
SO16  
plastic dual in-line package; 16 leads (300 mil); long body  
plastic small outline package; 16 leads; body width 7.5 mm  
SOT38-1  
TDA8702T  
SOT162-1  
BLOCK DIAGRAM  
1
REF  
100 nF  
CURRENT  
BAND-GAP  
REFERENCE  
REFERENCE  
LOOP  
6
16  
DGND  
AGND  
V
CURRENT  
GENERATORS  
CCA  
2
75  
75  
15  
14  
V
V
5
OUT  
OUT  
CLOCK INPUT  
INTERFACE  
CURRENT  
SWITCHES  
CLK  
TDA8702/  
TDA8702T  
REGISTERS  
13  
V
12  
11  
3
CCD  
(LSB) D0  
D1  
D2  
4
DATA  
INPUT  
INTERFACE  
D3  
10  
9
D4  
D5  
8
D6  
7
(MSB) D7  
MSA659  
Fig.1 Block diagram.  
3
1996 Aug 23  
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
PINNING  
SYMBOL PIN  
DESCRIPTION  
REF  
AGND  
D2  
1
2
3
4
5
6
7
8
9
voltage reference (decoupling)  
analog ground  
data input; bit 2  
data input; bit 3  
clock input  
handbook, halfpage  
V
1
2
3
4
5
6
7
8
16  
15  
14  
13  
REF  
CCA  
D3  
V
AGND  
D2  
OUT  
CLK  
DGND  
D7  
V
OUT  
digital ground  
V
D3  
CLK  
data input; bit 7  
data input; bit 6  
data input; bit 5  
CCD  
TDA8702/  
TDA8702T  
D6  
12 D0  
11 D1  
D5  
DGND  
D7  
D4  
10 data input; bit 4  
11 data input; bit 1  
12 data input; bit 0  
D4  
D5  
10  
9
D1  
D6  
D0  
MSA658  
VCCD  
13 positive supply voltage for digital  
circuits (+5 V)  
VOUT  
VOUT  
VCCA  
14 analog voltage output  
15 complementary analog voltage output  
16 positive supply voltage for analog  
circuits (+5 V)  
Fig.2 Pin configuration.  
1996 Aug 23  
4
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
LIMITING VALUES  
In accordance with the Absolute Maximum Rating System (IEC 134).  
SYMBOL  
VCCA  
VCCD  
CCA VCCD  
AGND DGND ground voltage differential  
VI input voltage (pins 3 to 5 and 7 to 12)  
PARAMETER  
MIN.  
0.3  
MAX.  
UNIT  
analog supply voltage  
digital supply voltage  
+7.0  
+7.0  
+0.5  
+0.1  
VCCD  
+26  
V
V
V
V
V
0.3  
0.5  
0.1  
0.3  
5  
V
supply voltage differential  
I
OUT/IOUT  
total output current (pins 14 and 15)  
storage temperature  
mA  
°C  
°C  
°C  
Tstg  
Tamb  
Tj  
55  
0
+150  
+70  
operating ambient temperature  
junction temperature  
+125  
HANDLING  
Inputs and outputs are protected against electrostatic discharges in normal handling. However, to be totally safe, it is  
desirable to take normal precautions appropriate to handling integrated circuits.  
THERMAL RESISTANCE  
SYMBOL  
Rth j-a  
PARAMETER  
VALUE  
UNIT  
from junction to ambient in free air  
SOT38-1  
70  
90  
K/W  
K/W  
SOT162-1  
1996 Aug 23  
5
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
CHARACTERISTICS  
VCCA = V16 V2 = 4.5 V to 5.5 V; VCCD = V13 V6 = 4.5 V to 5.5 V; VCCA VCCD = 0.5 V to +0.5 V; VREF decoupled to  
AGND by a 100 nF capacitor; Tamb = 0 °C to +70 °C; AGND and DGND shorted together; unless otherwise specified  
(typical values measured at VCCA = VCCD = 5 V and Tamb = 25 °C).  
SYMBOL  
Supply  
PARAMETER  
CONDITIONS  
MIN.  
TYP. MAX. UNIT  
VCCA  
VCCD  
ICCA  
analog supply voltage  
4.5  
5.0  
5.0  
26  
23  
5.5  
5.5  
32  
V
digital supply voltage  
analog supply current  
digital supply current  
4.5  
V
note 1  
note 1  
mA  
mA  
V
ICCD  
30  
AGND DGND ground voltage differential  
Inputs  
0.1  
+0.1  
DIGITAL INPUTS (D7 TO D0) AND CLOCK INPUT (CLK)  
VIL  
VIH  
IIL  
LOW level input voltage  
HIGH level input voltage  
LOW level input current  
HIGH level input current  
maximum clock frequency  
0
0.8  
V
2.0  
VCCD  
0.4  
20  
V
VI = 0.4 V  
VI = 2.7 V  
0.3  
0.01  
mA  
µA  
MHz  
IIH  
fCLK  
30  
Outputs (note 2; referenced to VCCA  
)
V
OUT VOUT  
full-scale analog output voltages  
(peak-to-peak value)  
ZL = 10 kΩ  
ZL = 75 Ω  
code = 0  
1.45 1.60 1.75  
0.72 0.80 0.88  
V
V
VOS  
analog offset output voltage  
3  
25  
mV  
µV/K  
V
V
B
OUT/TC  
full-scale analog output voltage  
temperature coefficient  
200  
OS/TC  
analog offset output voltage  
temperature coefficient  
20  
µV/K  
3 dB analog bandwidth  
differential gain  
note 3; fCLK = 30 MHz  
150  
0.6  
1
MHz  
%
Gdiff  
Φdiff  
ZO  
differential phase  
output impedance  
deg  
75  
Transfer function (fCLK = 30 MHz)  
ILE  
DC integral linearity error  
DC differential linearity error  
±1/2  
±1/2  
LSB  
LSB  
DLE  
1996 Aug 23  
6
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN.  
TYP. MAX. UNIT  
Switching characteristics (fCLK = 30 MHz); notes 4 and 5; see Figs 3, 4 and 5  
tSU;DAT  
tHD;DAT  
tPD  
data set-up time  
data hold time  
0.3  
2.0  
ns  
ns  
ns  
ns  
propagation delay time  
settling time  
1.0  
1.5  
tS1  
10% to 90% full-scale  
1.1  
change to ±1 LSB  
tS2  
td  
settling time  
10% to 90% full-scale  
change to ±1 LSB  
6.5  
3.0  
8.0  
5.0  
ns  
ns  
input to 50% output delay time  
Output transients (glitches; (fCLK = 30 MHz); note 6; see Fig.6  
Eg  
glitch energy from code  
transition 127 to 128  
30  
LSB.ns  
Note  
1. D0 to D7 are connected to VCCD, CLK is 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 75 (typ.).  
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).  
4. The worst case characteristics are obtained at the transition from input code 0 to 255 and if an external load  
impedance greater than 75 is connected between VOUT or VOUT and VCCA. The specified values have been  
measured with an active probe between VOUT and AGND. No further load impedance between VOUT and AGND has  
been applied. All input data is latched at the rising edge of the clock. The output voltage remains stable (independent  
of input data variations) during the HIGH level of the clock (CLK = HIGH). During a LOW-to-HIGH transition of the  
clock (CLK = LOW), the DAC operates in the transparent mode (input data will be directly transferred to their  
corresponding analog output voltages (see Fig.5).  
5. The data set-up (tSU;DAT) is the minimum period preceding the rising edge of the clock that the input data must be  
stable in order to be correctly registered. A negative set-up time indicates that the data may be initiated after the rising  
edge of the clock and still be recognized. The data hold time (tHD;DAT) is the minimum period following the rising edge  
of the clock that the input data must be stable in order to be correctly registered. A negative hold time indicates that  
the data may be released prior to the rising edge of the clock and still be recognized.  
6. The definition of glitch energy and the measurement set-up are shown in Fig.6. The glitch energy is measured at the  
input transition between code 127 to 128 and on the falling edge of the clock.  
1996 Aug 23  
7
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
Table 1 Input coding and output voltages (typical values; referenced to VCCA, regardless of the offset voltage)  
DAC OUTPUT VOLTAGES  
INPUT DATA  
(D7 TO D0)  
CODE  
ZL = 10 KΩ  
ZL = 75 Ω  
VOUT  
0
VOUT  
1.6  
VOUT  
0
VOUT  
0.8  
0
1
000 00 00  
000 000 01  
........  
0.006  
1.594  
0.003  
0.797  
.
128  
.
100 000 00  
........  
0.8  
0.8  
0.4  
0.4  
254  
255  
111 111 10  
111 111 11  
1.594  
1.6  
0.006  
0.797  
0.8  
0.003  
0
0
t
t
SU; DAT  
HD; DAT  
3.0 V  
input data  
stable  
1.3 V  
0 V  
3.0 V  
1.3 V  
0 V  
CLK  
MBC912  
The shaded areas indicate when the input data may change and be correctly registered. Data input update must be completed within 0.3 ns after the  
first rising edge of the clock (tSU;DAT is negative; 0.3 ns). Data must be held at least 2 ns after the rising edge (tHD;DAT = +2 ns).  
Fig.3 Data set-up and hold times.  
1996 Aug 23  
8
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
CLK  
1.3 V  
code 255  
input data  
1.3 V  
code 0  
(example of a  
full-scale input  
transition)  
1 LSB  
V
CCA  
(code 0)  
10 %  
50 %  
90 %  
t
d
V
OUT  
V
1.6 V  
CCA  
(code 255)  
1 LSB  
t
S1  
MBC913  
t
t
S2  
PD  
Fig.4 Switching characteristics.  
transparent  
mode  
latched  
mode  
1.3 V  
CLK  
input  
codes  
V
OUT  
analog  
output  
voltage  
transparent  
mode  
latched mode  
(stable output)  
beginning of  
transparent  
mode  
MBC914 - 1  
During the transparent mode (CLK = LOW), any change of input data will be seen at the output. During the latched mode (CLK = HIGH), the analog  
output remains stable regardless of any change at the input. A change of input data during the latched mode will be seen on the falling edge of the clock  
(beginning of the transparent mode).  
Fig.5 Latched and transparent mode.  
1996 Aug 23  
9
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
HP8082A  
PULSE  
GENERATOR  
(SLAVE)  
TEK P6201  
TEK7104 and TEK7A26  
f
f
CLK/10  
(2)  
D7 MSB  
D6  
V
OUT  
DYNAMIC  
PROBE  
OSCILLO-  
SCOPE  
V
OUT  
D5  
PULSE  
GENERATOR  
(SLAVE)  
R = 100 kΩ  
C = 3 pF  
bandwidth = 20 MHz  
D4  
CLK/10  
(1)  
HP8082A  
TDA8702/  
TDA8702T  
D3  
D2  
D1  
DIVIDER  
clock  
D0 (LSB)  
(
10)  
f
3
1
2
CLK  
f
PULSE  
GENERATOR  
(MASTER)  
CLK  
(3)  
MODEL EH107  
code 127  
1 LSB  
timing diagram  
code 128  
MSA660  
V
OUT  
time  
The value of the glitch energy is the sum of the shaded area measured in LSB.ns.  
Fig.6 Glitch energy measurement.  
1996 Aug 23  
10  
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
INTERNAL PIN CONFIGURATIONS  
V
CCA  
V
REF  
output current  
generators  
regulation loop  
REF  
MBC911 - 1  
AGND  
Fig.7 Reference voltage generator decoupling.  
handbook, halfpage  
V
CCA  
handbook, halfpage  
DGND  
AGND  
D0 to D7,  
CLK  
substrate  
MBC908  
AGND  
MBC910  
Fig.8 AGND and DGND.  
Fig.9 D7 to D0 and CLK.  
1996 Aug 23  
11  
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
handbook, halfpage  
V
CCA  
75 Ω  
75 Ω  
V
OUT  
handbook, halfpage  
V
OUT  
V
CCD  
AGND  
DGND  
bit  
n
bit  
n
MBC907  
switches and  
current generators  
MBC909 - 1  
Fig.10 Digital supply.  
Fig.11 Analog outputs.  
handbook, halfpage  
V
CCA  
AGND  
MBC906  
Fig.12 Analog supply.  
1996 Aug 23  
12  
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
APPLICATION INFORMATION  
Additional application information will be supplied upon request (please quote number FTV/8901).  
(1)  
handbook, halfpage  
100 nF  
REF  
V
V
CCA  
OUT  
V
AGND  
O
V
OUT  
TDA8702/  
TDA8702T  
MSA661  
(1) This is a recommended value for decoupling pin 1.  
Fig.13 Analog output voltage without external load (VO = VOUT; see Table 1, ZL = 10 k).  
(1)  
100 nF  
REF  
V
CCA  
(
)
75  
L
V
Z
/
Z
Z
AGND  
O
L
L
V
OUT  
TDA8702/  
TDA8702T  
MSA662  
(1) This is a recommended value for decoupling pin 1.  
Fig.14 Analog output voltage with external load (external load ZL = 75 to ).  
1996 Aug 23  
13  
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
(1)  
handbook, halfpage  
100 nF  
V
CCA  
REF  
100 µF  
V
AGND  
OUT  
V
75 Ω  
O
2
TDA8702/  
TDA8702  
MSA663  
AGND  
(1) This is a recommended value for decoupling pin 1.  
Fig.15 Analog output with AGND as reference.  
TDA8702  
10 µH  
12 µH  
V
OUT  
100 µF  
27 pF  
12 pF  
(pin 15)  
or  
390 Ω  
V
OUT  
390 Ω  
56 pF  
V
[390/(780+75)]  
o
(pin 14)  
39 pF  
100 pF  
MSA665  
Fig.16 Example of anti-aliasing filter (analog output referenced to AGND).  
14  
1996 Aug 23  
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
MSA657  
0
handbook, halfpage  
α
(dB)  
20  
40  
60  
80  
100  
0
10  
20  
30  
40  
f
(MHz)  
i
Characteristics  
Order 5; adapted CHEBYSHEV.  
Ripple at 0.1 dB.  
f(3 dB) = 6.7 MHz.  
f(NOTCH) = 9.7 MHz and 13.3 MHz.  
Fig.17 Frequency response for filter shown in Fig.16.  
(1)  
100 nF  
R2  
REF  
100 µF  
100 µF  
R1  
R1  
V
V
AGND  
OUT  
OUT  
TDA8702/  
TDA8702T  
2 X V (R2/R1)  
O
R2  
MSA664  
AGND  
(1) This is a recommended value for decoupling pin 1.  
Fig.18 Differential mode (improved supply voltage ripple rejection).  
15  
1996 Aug 23  
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
PACKAGE OUTLINES  
DIP16: plastic dual in-line package; 16 leads (300 mil); long body  
SOT38-1  
D
M
E
A
2
A
A
1
L
c
e
w M  
Z
b
1
(e )  
1
b
16  
9
M
H
pin 1 index  
E
1
8
0
5
10 mm  
scale  
DIMENSIONS (inch dimensions are derived from the original mm dimensions)  
(1)  
Z
A
A
A
2
(1)  
(1)  
1
w
UNIT  
mm  
b
b
c
D
E
e
e
L
M
M
H
1
1
E
max.  
max.  
min.  
max.  
1.40  
1.14  
0.53  
0.38  
0.32  
0.23  
21.8  
21.4  
6.48  
6.20  
3.9  
3.4  
8.25  
7.80  
9.5  
8.3  
4.7  
0.51  
3.7  
2.54  
0.10  
7.62  
0.30  
0.254  
0.01  
2.2  
0.021  
0.015  
0.013  
0.009  
0.86  
0.84  
0.32  
0.31  
0.055  
0.045  
0.26  
0.24  
0.15  
0.13  
0.37  
0.33  
inches  
0.19  
0.020  
0.15  
0.087  
Note  
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.  
REFERENCES  
OUTLINE  
EUROPEAN  
PROJECTION  
ISSUE DATE  
VERSION  
IEC  
JEDEC  
EIAJ  
92-10-02  
95-01-19  
SOT38-1  
050G09  
MO-001AE  
1996 Aug 23  
16  
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
SO16: plastic small outline package; 16 leads; body width 7.5 mm  
SOT162-1  
D
E
A
X
c
H
v
M
A
E
y
Z
16  
9
Q
A
2
A
(A )  
3
A
1
pin 1 index  
θ
L
p
L
1
8
detail X  
e
w
M
b
p
0
5
10 mm  
scale  
DIMENSIONS (inch dimensions are derived from the original mm dimensions)  
A
max.  
(1)  
(1)  
(1)  
UNIT  
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
θ
1
2
3
p
E
p
Z
0.30  
0.10  
2.45  
2.25  
0.49  
0.36  
0.32  
0.23  
10.5  
10.1  
7.6  
7.4  
10.65  
10.00  
1.1  
0.4  
1.1  
1.0  
0.9  
0.4  
mm  
2.65  
1.27  
0.050  
1.4  
0.25  
0.01  
0.25  
0.1  
0.25  
0.01  
8o  
0o  
0.012 0.096  
0.004 0.089  
0.019 0.013 0.41  
0.014 0.009 0.40  
0.30  
0.29  
0.419  
0.394  
0.043 0.043  
0.016 0.039  
0.035  
0.016  
inches 0.10  
0.055  
0.01 0.004  
Note  
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.  
REFERENCES  
OUTLINE  
EUROPEAN  
PROJECTION  
ISSUE DATE  
VERSION  
IEC  
JEDEC  
EIAJ  
95-01-24  
97-05-22  
SOT162-1  
075E03  
MS-013AA  
1996 Aug 23  
17  
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
Several techniques exist for reflowing; for example,  
SOLDERING  
Introduction  
thermal conduction by heated belt. Dwell times vary  
between 50 and 300 seconds depending on heating  
method. Typical reflow temperatures range from  
215 to 250 °C.  
There is no soldering method that is ideal for all IC  
packages. Wave soldering is often preferred when  
through-hole and surface mounted components are mixed  
on one printed-circuit board. However, wave soldering is  
not always suitable for surface mounted ICs, or for  
printed-circuits with high population densities. In these  
situations reflow soldering is often used.  
Preheating is necessary to dry the paste and evaporate  
the binding agent. Preheating duration: 45 minutes at  
45 °C.  
WAVE SOLDERING  
This text gives a very brief insight to a complex technology.  
A more in-depth account of soldering ICs can be found in  
our “IC Package Databook” (order code 9398 652 90011).  
Wave soldering techniques can be used for all SO  
packages if the following conditions are observed:  
A double-wave (a turbulent wave with high upward  
pressure followed by a smooth laminar wave) soldering  
technique should be used.  
DIP  
SOLDERING BY DIPPING OR BY WAVE  
The longitudinal axis of the package footprint must be  
parallel to the solder flow.  
The maximum permissible temperature of the solder is  
260 °C; solder at this temperature must not be in contact  
with the joint for more than 5 seconds. The total contact  
time of successive solder waves must not exceed  
5 seconds.  
The package footprint must incorporate solder thieves at  
the downstream end.  
During placement and before soldering, the package must  
be fixed with a droplet of adhesive. The adhesive can be  
applied by screen printing, pin transfer or syringe  
dispensing. The package can be soldered after the  
adhesive is cured.  
The device may be mounted up to the seating plane, but  
the temperature of the plastic body must not exceed the  
specified maximum storage temperature (Tstg max). If the  
printed-circuit board has been pre-heated, forced cooling  
may be necessary immediately after soldering to keep the  
temperature within the permissible limit.  
Maximum permissible solder temperature is 260 °C, and  
maximum duration of package immersion in solder is  
10 seconds, if cooled to less than 150 °C within  
6 seconds. Typical dwell time is 4 seconds at 250 °C.  
REPAIRING SOLDERED JOINTS  
A mildly-activated flux will eliminate the need for removal  
of corrosive residues in most applications.  
Apply a low voltage soldering iron (less than 24 V) to the  
lead(s) of the package, below the seating plane or not  
more than 2 mm above it. If the temperature of the  
soldering iron bit is less than 300 °C it may remain in  
contact for up to 10 seconds. If the bit temperature is  
between 300 and 400 °C, contact may be up to 5 seconds.  
REPAIRING SOLDERED JOINTS  
Fix the component by first soldering two diagonally-  
opposite end leads. Use only a low voltage soldering iron  
(less than 24 V) applied to the flat part of the lead. Contact  
time must be limited to 10 seconds at up to 300 °C. When  
using a dedicated tool, all other leads can be soldered in  
one operation within 2 to 5 seconds between  
270 and 320 °C.  
SO  
REFLOW SOLDERING  
Reflow soldering techniques are suitable for all SO  
packages.  
Reflow soldering requires solder paste (a suspension of  
fine solder particles, flux and binding agent) to be applied  
to the printed-circuit board by screen printing, stencilling or  
pressure-syringe dispensing before package placement.  
1996 Aug 23  
18  
Philips Semiconductors  
Product specification  
8-bit video digital-to-analog converter  
TDA8702  
DEFINITIONS  
Data sheet status  
Objective specification  
Preliminary specification  
Product specification  
This data sheet contains target or goal specifications for product development.  
This data sheet contains preliminary data; supplementary data may be published later.  
This data sheet contains final product specifications.  
Limiting values  
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or  
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation  
of the device at these or at any other conditions above those given in the Characteristics sections of the specification  
is not implied. Exposure to limiting values for extended periods may affect device reliability.  
Application information  
Where application information is given, it is advisory and does not form part of the specification.  
LIFE SUPPORT APPLICATIONS  
These products are not designed for use in life support appliances, devices, or systems where malfunction of these  
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for  
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such  
improper use or sale.  
1996 Aug 23  
19  

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