AD9283 データシートの表示（PDF） - Analog Devices
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AD9283 Datasheet PDF : 12 Pages
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AD9283
EXPLANATION OF TEST LEVELS
Test Level
I 100% production tested.
II 100% production tested at 25°C and sample tested at
specified temperatures.
III Sample tested only.
IV Parameter is guaranteed by design and characteriza-
tion testing.
V Parameter is a typical value only.
VI 100% production tested at 25°C; guaranteed by design and
characterization testing for industrial temperature range;
100% production tested at temperature extremes for mili-
tary devices.
Step
255
•
•
128
127
•
•
0
Table I. Output Coding (VREF = 1.25 V)
AIN–AIN
0.512
•
•
0.002
–0.002
•
•
–0.512
Digital Output
1111 1111
•
•
1000 0000
0111 1111
•
•
0000 0000
PIN CONFIGURATION
PWRDWN 1
20 D0 (LSB)
VREF OUT 2
19 D1
VREF IN 3
18 D2
GND 4
17 D3
VD 5 AD9283 16 GND
A IN
6
TOP VIEW
(Not to Scale)
15
VDD
AIN 7
14 D4
VD 8
13 D5
GND 9
12 D6
ENCODE 10
11 D7 (MSB)
Pin Number
1
2
3
4, 9, 16
5, 8
6
Mnemonic
PWRDWN
VREF OUT
VREF IN
GND
VD
AIN
7
10
11–14, 17–20
15
AIN
ENCODE
D7–D4, D3–D0
VDD
PIN FUNCTION DESCRIPTIONS
Function
Power-Down Function Select; Logic HIGH for Power-Down Mode (Digital Outputs Go
to High Impedance State)
Internal Reference Output (1.25 V typ); Bypass with 0.1 µF to Ground
Reference Input for ADC (1.25 V typ)
Ground
Analog 3 V Power Supply
Analog Input for ADC (Can Be Left Open if Operating in Single-Ended Mode, but Rec-
ommend Connection to a 0.1 µF Capacitor and a 25 Ω Resistor in Series to Ground for
Better Input Matching)
Analog Input for ADC
Encode Clock for ADC (ADC Samples on Rising Edge of ENCODE)
Digital Outputs of ADC
Digital output power supply. Nominally 2.5 V to 3.6 V
–4–
REV. C
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