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參數(shù)資料
| 型號： | AD7248ABRZ-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 12BIT W/REF 20-SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Data Converter Fundamentals DAC Architectures |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 系列： | DACPORT® |
| 設(shè)置時間： | 7µs |
| 位數(shù)： | 12 |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 雙 ± |
| 功率耗散（最大）： | 210mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-SOIC W |
| 包裝： | 帶卷 (TR) |
| 輸出數(shù)目和類型： | 1 電壓，單極；1 電壓，雙極 |
| 采樣率（每秒）： | 142k |
AD7245A/AD7248A
REV. B
–3–
SWITCHING CHARACTERISTICS
1
Parameter
A, B Versions
T Version
Unit
Conditions
t1
@ 25
°C
55
ns typ
Chip Select Pulsewidth
TMIN to TMAX
80
100
ns min
t2
@ 25
°C
40
ns typ
Write Pulsewidth
TMIN to TMAX
80
100
ns min
t3
@ 25
°C
0
ns min
Chip Select to Write Setup Time
TMIN to TMAX
0
ns min
t4
@ 25
°C
0
ns min
Chip Select to Write Hold Time
TMIN to TMAX
0
ns min
t5
@ 25
°C
40
ns typ
Data Valid to Write Setup Time
TMIN to TMAX
80
ns min
t6
@ 25
°C
10
ns min
Data Valid to Write Hold Time
TMIN to TMAX
10
ns min
t7
@ 25
°C
40
ns typ
Load DAC Pulsewidth
TMIN to TMAX
80
100
ns min
t8 (AD7245A Only)
@ 25
°C
40
ns typ
Clear Pulsewidth
TMIN to TMAX
80
100
ns min
NOTES
1Sample tested at 25
°C to ensure compliance.
2Power supply tolerance is
±10%.
ABSOLUTE MAXIMUM RATINGS
1
VDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +17 V
VDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +17 V
VDD to VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +34 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, VDD
Digital Input Voltage to DGND . . . . . . . –0.3 V, VDD + 0.3 V
VOUT to AGND
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . VSS, VDD
VOUT to VSS
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V, 24 V
VOUT to VDD
2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –32 V, 0 V
REF OUT
2 to AGND . . . . . . . . . . . . . . . . . . . . . . . . 0 V, V
DD
Power Dissipation (Any Package) to 75
°C . . . . . . . . . 450 mW
Derates above 75
°C by . . . . . . . . . . . . . . . . . . . . 6 mW/°C
Operating Temperature
Commercial (A, B Versions) . . . . . . . . . . . –40
°C to +85°C
Extended (S Version) . . . . . . . . . . . . . . . –55
°C to +125°C
Storage Temperature . . . . . . . . . . . . . . . . . . –65
°C to +150°C
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . . . 300
°C
NOTES
1Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
2The output may be shorted to voltages in this range provided the power dissipation
of the package is not exceeded. V OUT short circuit current is typically
80 mA.
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the AD7245A/AD7248A features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions
are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
(VDD = +12 V to +15 V;
2 V
SS = 0 V to –12 V to –15 V;
2 See Figures 5 and 7.)
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