AD720 View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
AD720 Datasheet PDF : 8 Pages
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AD720/AD721–SPECIFICATIONS (TA = +25°C and supplies = ±5 V unless otherwise noted)
Parameter
Conditions
Min Typ Max Unit
SIGNAL INPUTS (RDIN, GRIN, BLIN)
Input Amplitude
Input Resistances1
RDIN with Respect to AGND
GRIN with Respect to AGND
BLIN with Respect to AGND
Input Capacitance
LOGIC INPUTS (C-SYNC, 4FSC, ENCD, NTSC)
Logic LO Input Voltage
Logic HI Input Voltage
Logic LO Input Current (DC)
Logic HI Input Current (DC)
BYPASS AMPLIFIERS (AD721 Only)
Gain Error
Small Signal –3 dB Bandwidth
Output Offset Voltage (Active State)
Output Voltage (Inactive State)
VIDEO OUTPUTS3 (LUMA, CRMA, CMPS)
Luminance (LUMA) Output
Bandwidth
Gain Error
Linearity
Sync Level
Chrominance (CRMA) Output
Bandwidth
Color Burst Amplitude
Absolute Gain Error
Absolute Phase Error
Chroma/Luma Time Alignment4
Composite Output
Absolute Gain Error
Differential Gain
Differential Phase
Output Offset Voltage
Chroma Feedthrough
POWER SUPPLIES (APOS, DPOS, VNEG)
Recommended Supply Range
Full Output Current5
Zero Signal Quiescent Current
Bypass Mode Quiescent Current
(AD721 Only)
NTSC
PAL
Nominal Gain of ×22
NTSC
PAL
NTSC
PAL
NTSC
PAL
NTSC
With Respect to Chroma Channel
With Respect to Chroma Channel
Chroma, Luma, or Composite Outputs
Monochrome Input
Dual Supply
–5 V Supply
+5 V Supply
–5 V Supply
+5 V Supply
–5 V Supply
+5 V Supply
714
700
2.3
4.2
4.2
5
1
4
<1
<1
–5
+5
100
–50
+50
–50
+50
mV
mV
kΩ
kΩ
kΩ
pF
V
V
µA
µA
%
MHz
mV
mV
5
–5 ± 1 +5
± 0.1
252 286 320
300
3.6
4.4
257 286 315
300
–15 ± 5 +15
±3
–170
–5 ± 1 +5
0.1
0.1
50 100
20 55
MHz
%
%
mV
mV
MHz
MHz
mV p-p
mV p-p
%
Degrees
ns
%
%
Degrees
mV
mV p-p
± 4.75
± 5.25 V
35
mA
67
mA
10 20 35
mA
10 20 35
mA
14 20
mA
14 20
mA
NOTES
1Input scaling resistors provide best scaling accuracy when source resistance is 37.5 Ω (75 Ω reverse-terminated input).
2Required for driving a 75 Ω double reverse terminated load.
3All outputs are measured at a reverse-terminated load; voltages at IC pins are twice those specified here.
4This is a predistortion (per FCC specifications) that compensates for the chroma/luma delay in the low-pass filter that separates the luminance and chrominance
signals in a television receiver.
5CRMA, LUMA, and CMPS outputs are all connected to 75 Ω reverse-terminated loads; full-white signal for entire field.
Specifications shown in boldface are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels. All min
and max specifications are guaranteed, although only those shown in boldface are tested on all production units.
Specifications subject to change without notice.
–2–
REV. 0
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