- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄373898 > AD7393 (Analog Devices, Inc.) +3 V, Parallel Input Micropower 10- and 12-Bit DACs PDF資料下載
參數(shù)資料
| 型號(hào)： | AD7393 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | +3 V, Parallel Input Micropower 10- and 12-Bit DACs |
| 中文描述： | 3伏，并行輸入微10 -和12位DAC |
| 文件頁(yè)數(shù)： | 7/11頁(yè) |
| 文件大小： | 199K |
| 代理商： | AD7393 |
AD7392/AD7393
–7–
REV. A
TIME – 100
m
s/DIV
100
50
0
2
0
1
0
IDD (
m
A)
V
OUT
(V)
SHDN
100
90
0%
10
Figure 23. Shutdown Recovery Time
Table I. Control Logic Truth Table
CS
RS
DAC Register Function
H
L
↑
X
H
H
H
H
L
↑
Latched
Transparent
Latched with New Data
Loaded with All Zeros
Latched all Zeros
NOTE
↑
Positive logic transition; X Don’t Care.
OPERATION
The AD7392 and AD7393 comprise a set of pin compatible,
12-bit/10-bit digital-to-analog converters. These single-supply
operation devices consume less than 100 microamps of current
while operating from power supplies in the +2.7 V to +5.5 V
range making them ideal for battery operated applications. They
contain a voltage-switched, 12-bit/10-bit, laser-trimmed digital-
to-analog converter, rail-to-rail output op amps, and a parallel-
input DAC register. The external reference input has constant
input resistance independent of the digital code setting of the
DAC. In addition, the reference input can be tied to the same
supply voltage as V
DD
, resulting in a maximum output voltage
span of 0 to V
DD
. The parallel data interface consists of 12 data
bits, DB0–DB11, for the AD7392; 10 data bits, DB0–DB9, for
the AD7393; and a
CS
write strobe. A
RS
pin is available to
reset the DAC register to zero scale. This function is useful for
power-on reset or system failure recovery to a known state.
Additional power savings are accomplished by activating the
SHDN
pin, resulting in a 1.5
μ
A maximum consumption sleep
mode. As long as the supply voltage remains, data will be re-
tained in the DAC register to reset the DAC output when the
part is taken out of shutdown (
SHDN
= 1).
D/A CONVERTER SECTION
The voltage switched R-2R DAC generates an output voltage
dependent on the external reference voltage connected to the
REF pin according to the following equation:
V
OUT
=
V
REF
×
D
2
N
Equation 1
where
D
is the decimal data word loaded into the DAC register,
and
N
is the number of bits of DAC resolution. In the case of
the 10-bit AD7393 using a 2.5 V reference, Equation 1 simpli-
fies to:
V
OUT
=
2.5
×
1024
Using Equation 2, the nominal midscale voltage at V
OUT
is 1.25 V
for
D
= 512; full-scale voltage is 2.497 volts. The LSB step size is
= 2.5
×
1/1024 = 0.0024 volts.
For the 12-bit AD7392 operating from a 5.0 V reference Equa-
tion 1 becomes:
D
Equation 2
V
OUT
=
V
REF
×
D
2
N
Equation 3
Using Equation 3, the AD7392 provides a nominal midscale
voltage of 2.50 V for D = 2048, and a full-scale output of 4.998
volts. The LSB step size is = 5.0
×
1/4096 = 0.0012 volts.
TEMPERATURE –
8
C
S
1000
10
–55 –35
125
–15
65
85
105
5
25
45
100
V
DD
= 5.5V
V
REF
= 2.5V
SHDN
= 0V
AD7392
Figure 24. Shutdown Current vs. Temperature
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD7393AN | +3 V, Parallel Input Micropower 10- and 12-Bit DACs |
| AD7393AR | +3 V, Parallel Input Micropower 10- and 12-Bit DACs |
| AD7398BR-REEL7 | Quad, Serial-Input 12-Bit/10-Bit DACs |
| AD7399BR-REEL7 | Quad, Serial-Input 12-Bit/10-Bit DACs |
| AD7398 | Quad, Serial-Input 12-Bit/10-Bit DACs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7393AN | 制造商:Rochester Electronics LLC 功能描述:10-BIT +3V TO +5V UPOWER DAC, PARALLEL - Bulk 制造商:Analog Devices 功能描述:CONVERTOR DA ((NW)) 制造商:Analog Devices Inc. 功能描述:3 V, Parallel Input 10-Bit DACs |
| AD7393AR | 制造商:Analog Devices 功能描述:DAC 1-CH R-2R 10-bit 20-Pin SOIC W 制造商:Rochester Electronics LLC 功能描述:10-BIT +3V TO +5V UPOWER DAC, PARALLEL - Bulk 制造商:Analog Devices 功能描述:PARALLEL, WORD INPUT LOADING, 70 us SETTLING TIME, 10-BIT DAC, PDSO20 |
| AD7393ARU | 制造商:AD 制造商全稱:Analog Devices 功能描述:+3 V, Parallel Input Micropower 10- and 12-Bit DACs |
| ad7393aru-reel | 制造商:Rochester Electronics LLC 功能描述:10-BIT +3V TO +5V UPOWER DAC, PARALLEL - Tape and Reel 制造商:Analog Devices 功能描述: |
| AD7393ARZ | 制造商:Analog Devices 功能描述:DAC 1-CH R-2R 10-bit 20-Pin SOIC W |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。