ADC-321 データシートの表示（PDF） - Murata Power Solutions
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ADC-321 Datasheet PDF : 8 Pages
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ADC-321
8-Bit, 50MHz Video A/D Converter
ABSOLUTE MAXIMUM RATINGS (TA = +25°C)
PARAMETERS
LIMITS
UNITS
Power Supply Voltage (+AVS, +DVS)
–0.5 to 7
Volts
Analog Input Voltage, (VIN)
–0.5 to +AVS + 0.5
Volts
Reference Input Voltage (VRT, VRB) –0.5 to +AVS + 0.5
Volts
Digital Input Voltage (VIH, VIL)
–0.5 to +AVS + 0.5
Volts
Digital Output Voltage (VOH, VOL)
–0.5 to +DVS + 0.5
Volts
FUNCTIONAL SPECIFICATIONS
Typical at TA = 25°C, VRT = +2.5V, VRB = +0.5V, +AVS = +5V, +DVS = +3V to +5.5V,
FS = 50MHz unless otherwise specified.
ANALOG INPUTS
MIN. TYP. MAX. UNITS
Input Voltage Range ~
+0.5
Input Capacitance
(@ VIN = +1.5Vdc +0.07VRMS)
—
Input Signal Bandwidth
–1dB (@ RIN = 337)
—
–3dB (@ RIN = 337)
—
—
+2.5
Volts
15
—
pF
60
—
MHz
100
—
MHz
DIGITAL OUTPUTS (continued)
Output Data Delay
(OE = 0V, CL = 15pF)
(@ +DVS = +5V)
t PLH
t PHL
(@+DVS = +3.3V) t PLH
t PHL
3-State Output Enable Time
(RL = 1k7, CL = 15pF)
(@ +DVS = +5V)
t PZH
t PZL
(@+DVS = +3.3V) t PZH
t PZL
3-State Output Disable Time
(RL = 1k7, CL = 15pF)
(@+DVS = +5V)
t PHZ, t PLZ
(@+DVS = +3.3V) t PHZ, t PLZ
CLAM CIRCUIT
Clamp Offset Voltage
Clamp Pulse Width
MIN.
5.5
5.5
4.3
4.3
2.5
2.5
3.0
3.0
3.5
2.5
0
1.75
TYP. MAX. UNITS
9.5
12.0
ns
8.5
12.0
ns
11.8
16.3
ns
7.6
16.3
ns
4.5
8.0
ns
6.0
8.0
ns
7.0
9.0
ns
5.0
9.0
ns
5.5
7.5
ns
5.5
8.0
ns
20
40
mV
2.75
3.75
μA
REFERENCE INPUTS
PERFORMANCE
Reference Resistance
VRT – VRB
Reference Current
Reference Voltage
VRT
VRB
VRT – VRB
Self Bias Voltage
VRB
VRT – VRB
Capacitance (VRT, VRTS, VRB, VRBS)
Offset Voltage
VRT
VRB
260
4.1
—
0
1.7
+0.52
1.80
—
–70
20
370
5.4
—
—
—
+0.56
1.92
—
–50
40
DIGITAL INPUTS
Logic Levels
Input Voltage "1"
Input Voltage "0"
Input Current
A/D CLK
CLP, CLE
OE
Input Capacitance
A/D Clock Pulse Width
(tpw1)
(tpw0)
2.2
—
—
—
–240
—
–240
—
–40
—
—
—
10
—
10
—
DIGITAL OUTPUTS
MIN. TYP.
Output Current (OE = 0V)
(@ +DVS = +5V) "1"
"0"
Output Current (OE = 0V)
(@ +DVS = +3.3V) "1"
"0"
Output Current
(@ OE = +3V)
"1"
"0"
Capacitance
—
—
—
4
—
—
—
2.4
—
–40
—
–40
—
—
11
Footnotes:
~ See technical note 6
Pin 25 tied to AGND and pin 17 tied to +AVS
+AVS = +4.75 to +5.25V and +DVS = 3 to +5.5V, full operating tem. range.
VIL = 0V and VIH = +AVS, full operating temp. range
VOH = +DVS–0.8V and VOL = +0.4V, full operating temp. range
480
7
7.7
mA
+2.7
Volts
—
Volts
—
Volts
+0.60 Volts
2.04
Volts
11
pF
–30
mV
60
mV
—
Volts
+0.8
Volts
240
μA
40
μA
240
μA
11
pF
—
ns
—
ns
MAX. UNITS
–2
mA
—
mA
–1.2
mA
—
mA
40
μA
40
μA
pF
Resolution
8
—
—
Bit
Sampling Rate, maximum, FS
50
—
—
MHz
minimum, FS
—
—
0.5
MHz
Aperature Delay (Tds)
—
0
—
ns
Integral Linearity Error
—
±0.7
±1.5
LSB
Diff. Linearity Error
—
±0.3
±0.5
LSB
Diff. Gain Error 11
—
3
—
%
Diff. Phase Error 11
—
1.5
—
deg
S/N Ratio with THD
(fIN = 100kHz)
—
45
—
dB
(fIN = 500kHz)
—
44
—
dB
(fIN = 1MHz)
—
44
—
dB
(fIN = 3MHz)
—
43
—
dB
(fIN = 10MHz)
—
38
—
dB
(fIN = 25MHz)
—
32
—
dB
Spurious Free Dynamic Range
(fIN = 100kHz)
—
51
—
dB
(fIN = 500kHz)
—
46
—
dB
(fIN = 1MHz)
—
49
—
dB
(fIN = 3MHz)
—
46
—
dB
(fIN = 10MHz)
—
45
—
dB
(fIN = 25MHz)
—
45
—
dB
POWER REQUIREMENTS
Power Supply
+AVS
+DVS
|AGND – DGND|
Power Supply Current 12
1. AIS, DIS (@ +DVS = +5V)
2. AIS
DIS (@ +DVS = +3.3V)
Power Dissipation
+4.75
+3.0
0
—
—
—
—
+5.0 +5.25 Volts
—
+5.5
Volts
—
100
mW
25
36
mA
23
33
mA
2
3
mA
125
180
mW
ENVIRONMENTAL/PHYSICAL
Operating Temp. Range, Case
Storage Temperature Range
Package Type
Weight
–40
—
+85
°C
–55
—
+150
°C
32-pin, plastic QFP
0.007 ounces (0.2 grams)
+DVS = +3 to +5.5V, full operating temp. range
OE: +3 to 0V change
OE: 0 to +3V change
2.75μs clamp pulse width, 14.3MHz sampling,
15.75kHz clamping rate
The clamp pulse width given is for NTSC. For other processing
systems adjust the rate to the clamp pulse cycle (1/15.75kHz for
NTSC) to equal the value for NTSC.
11 NTSC 40IRE ramp, 14.3MHz sampling
12 50MHz sampling, +AVS = +5V
www.murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MDA_ADC-321.B01 Page 2 of 8
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