參數(shù)資料
型號： AD5821
廠商： Analog Devices, Inc.
英文描述： 120 mA, Current Sinking, 10-Bit, I2C DAC
中文描述： 120毫安，灌電流，10位和I2C數(shù)模轉(zhuǎn)換器
文件頁數(shù)： 3/16頁
文件大小： 386K
代理商： AD5821
AD5821
SPECIFICATIONS
V
DD
= 2.7 V to 5.5 V, AGND = DGND = 0 V,
load resistance R
L
= 25 Ω connected to V
DD
; all specifications T
MIN
to T
MAX
,
unless otherwise noted.
Rev. 0 | Page 3 of 16
Table 1.
Parameter
DC PERFORMANCE
B Version
1
Typ
Unit
Test Conditions/Comments
V
DD
= 3.6 V to 4.5 V; device operates over 2.7 V to 5.5 V
with reduced performance
117 μA/LSB
Guaranteed monotonic over all codes
All 0s loaded to DAC
@ 25°C
XSHUTDOWN = 0
Output voltage range over which maximum 120 mA
sink current is available
Output voltage range over which 90 mA sink current
is available
To 10% of FS, coming out of power-down mode; V
DD
= 5 V
V
DD
= 2.7 V to 5.5 V
V
DD
= 2.7 V to 5.5 V
V
DD
= 2.7 V to 3.6 V
V
DD
= 2.7 V to 3.6 V
V
DD
= 3.6 V to 5.5 V
V
DD
= 3.6 V to 5.5 V
V
IN
= 0 V to V
DD
Pulse width of spike suppressed
I
DD
specification is valid for all DAC codes
V
INH
= 1.8 V, V
INL
= GND, V
DD
= 3.6 V
V
INH
= 1.8 V, V
INL
= GND
Min
Max
Resolution
Relative Accuracy
2
Differential Nonlinearity
2, 3
Zero-Code Error
2, 4
Offset Error @ Code 16
2
Gain Error
2
Offset Error Drift
4, 5
Gain Error Drift
2, 5
OUTPUT CHARACTERISTICS
Minimum Sink Current
4
Maximum Sink Current
Output Current During XSHUTDOWN
Output Compliance
5
0
0.6
10
±1.5
1
0.5
10
±0.2
3
120
80
±4
±1
5
±0.6
±0.5
V
DD
Bits
LSB
LSB
mA
mA
% of FSR
μA/°C
LSB/°C
mA
mA
nA
V
Output Compliance
5
0.48
V
DD
V
Power-Up Time
LOGIC INPUTS (XSHUTDOWN)
5
Input Current
Input Low Voltage, V
INL
Input High Voltage, V
INH
Pin Capacitance
LOGIC INPUTS (SCL, SDA)
5
Input Low Voltage, V
INL
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input High Voltage, V
INH
Input Leakage Current, I
IN
Input Hysteresis, V
HYST
Digital Input Capacitance, C
IN
Glitch Rejection
6
POWER REQUIREMENTS
V
DD
I
DD
(Normal Mode)
V
DD
= 2.7 V to 3.6 V
I
DD
(Power-Down Mode)
7
1.3
0.3
1.26
0.3
1.4
0.05 V
DD
2.7
20
3
6
2.5
0.5
±1
0.54
+0.54
V
DD
+ 0.3
+0.54
V
DD
+ 0.3
±1
50
5.5
4
μs
μA
V
V
pF
V
V
V
V
μA
V
pF
ns
V
mA
μA
1
Temperature range is as follows: B Version = 30°C to +85°C.
2
See the
section.
Terminology
3
Linearity is tested using a reduced code range: Code 32 to Code 1023.
4
To achieve near zero output current, use the power-down feature.
5
Guaranteed by design and characterization; not production tested. XSHUTDOWN is active low. SDA and SCL pull-up resistors are tied to 1.8 V.
6
Input filtering on both the SCL and the SDA inputs suppresses noise spikes that are less than 50 ns.
7
XSHUTDOWN is active low.
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