参数资料
| 型号： | AD7247AQ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 5/12页 |
| 文件大小： | 0K |
| 描述： | IC DAC 12BIT W/AMP W/BUFF 24CDIP |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 15 |
| 系列： | DACPORT® |
| 设置时间： | 10µs |
| 位数： | 12 |
| 数据接口： | 并联 |
| 转换器数目： | 2 |
| 电压电源： | 双 ± |
| 功率耗散（最大）： | 1W |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 24-CDIP（0.300"，7.62mm） |
| 供应商设备封装： | 24-CDIP |
| 包装： | 管件 |
| 输出数目和类型： | 2 电压，单极；2 电压，双极 |
REV. 0
–2–
AD7237A/AD7247A–SPECIFICATIONS
(VDD = +12 V to +15 V,
1 V
SS = 0 V or –12 V to –15 V,
1 AGND =
DGND = 0 V [AD7237A], GND = 0 V [AD7247A], REF IN = +5 V,
Parameter
A
2
B
2
T
2
Units
Test Conditions/Comments
STATIC PERFORMANCE
Resolution
12
Bits
Relative Accuracy
3
±1
±1/2
LSB max
Differential Nonlinearity
3
±0.9
LSB max
Guaranteed Monotonic
Unipolar Offset Error
3
±3
±4
LSB max
VSS = 0 V or –12 V to –15 V
4. DAC Latch Contents All 0s
Bipolar Zero Error
3
±6
±4
±6
LSB max
VSS = –12 V to –15 V
4. DAC Latch Contents
1000 0000 0000
Full-Scale Error
3, 5
±5
±6
LSB max
Full-Scale Mismatch
5
±1
LSB typ
REFERENCE OUTPUT
REF OUT
4.97/5.03
4.95/5.05
V min/max
Reference Temperature
Coefficient
±25
ppm/
°C typ
Reference Load Change
(
REF OUT vs. I)
–1
mV max
Reference Load Current Change (0-100
A)
REFERENCE INPUT
Reference Input Range
4.75/5.25
V min/max
5 V
± 5%
Input Current
6
±5
A max
DIGITAL INPUTS
Input High Voltage, VINH
2.4
V min
Input Low Voltage, VINL
0.8
V max
Input Current
IIN (Data Inputs)
±10
A max
VIN = 0 V to VDD
Input Capacitance
6
8
pF max
ANALOG OUTPUTS
Output Range Resistors
15/30
k
min/max
Output Voltage Ranges
7
+5, +10
V
Single Supply; (VSS = 0 V)
Output Voltage Ranges
7
+5, +10,
±5 +5, +10, ±5 +5, +10, ±5
Dual Supply; (VSS = –12 V to –15 V
4)
DC Output Impedance
0.5
typ
AC CHARACTERISTICS
6
Voltage Output Settling Time
Settling Time to Within
±1/2 LSB of Final Value
Positive Full-Scale Change
8
10
s max
DAC Latch all 0s to all 1s. Typically 5
s
Negative Full-Scale Change 8
8
10
s max
DAC Latch all 1s to all 0s. Typically 5
s
VSS = –12 V to –15 V
4.
Digital-to-Analog Glitch
Impulse
3
30
nV secs typ
DAC Latch Contents Toggled Between all 0s and all 1s
Digital Feedthrough
3
10
nV secs typ
Digital Crosstalk
3
30
nV secs typ
POWER REQUIREMENTS
VDD
+10.8/+16.5 +11.4/+15.75 +11.4/+15.75 V min/max
For Specified Performance Unless Otherwise Stated
VSS
–10.8/–16.5
–11.4/–15.75 –11.4/–15.75
V min/max
For Specified Performance Unless Otherwise Stated
IDD
15
mA max
Output Unloaded. Typically 10 mA
ISS (Dual Supplies)
5
mA max
Output Unloaded. Typically 3 mA
NOTES
1Power Supply tolerance is
±10% for A version and ±5% for B and T versions.
2Temperature ranges are as follows: A, B Versions, –40
°C to +85°C; T Version, –55°C to +125°C.
3See Terminology.
4With appropriate power supply tolerances.
5Measured with respect to REF IN and includes unipolar/bipolar offset error.
6Sample tested @ +25
°C to ensure compliance.
70 V to +10 V range is only available with V
DD
≥ 14.25 V.
Specifications subject to change without notice.
RL = 2 k, CL = 100 pF. All specifications TMIN to TMAX unless otherwise noted.)
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