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参数资料
| 型号： | AD7849CRZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 15/20页 |
| 文件大小： | 0K |
| 描述： | IC DAC 14/16BIT SRL-IN 20-SOIC |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 1,000 |
| 设置时间： | 7µs |
| 位数： | 16 |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 电压电源： | 模拟和数字，双 ± |
| 功率耗散（最大）： | 100mW |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 20-SOIC W |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 1 电压，单极；1 电压，双极 |
| 采样率（每秒）： | 143k |
AD7849
Rev. C | Page 4 of 20
Parameter
A Version
B Version
C Version
Unit
Test Conditions/Comments
DIGITAL INPUTS
Input High Voltage, VINH
2.4
V min
Input Low Voltage, VINL
0.8
V max
Input Current, IINH
±10
μA max
Input Capacitance, CIN
10
pF max
DIGITAL OUTPUTS
Output Low Voltage, VOL
0.4
V max
ISINK = 1.6 mA
Output High Voltage, VOH
4.0
V min
ISOURCE = 400 μA
Floating State Leakage Current
±10
μA max
Floating State Output
Capacitance
10
pF max
POWER REQUIREMENTS2
VDD
14.25/15.75
V min/V max
VSS
14.25/15.75
V min/V max
VCC
4.75/5.25
V min/V max
IDD
5
mA max
VOUT unloaded, VINH = VDD – 0.1 V,
VINL = 0.1 V
ISS
5
mA max
VOUT unloaded, VINH = VDD – 0.1 V,
VINL = 0.1 V
ICC
2.5
mA max
VINH = VDD – 0.1 V, VINL = 0.1 V
Power Supply Sensitivity3
1.5
LSB/V max
Power Dissipation
100
mW typ
VOUT unloaded
1 Guaranteed by design and characterization, not production tested.
2 The AD7849 is functional with power supplies of ±12 V. See the Typical Performance Characteristics section.
3 Sensitivity of gain error, offset error, and bipolar zero error to VDD, VSS variations.
RESET SPECIFICATIONS
These specifications apply when the device goes into reset mode during power-up or power-down sequence. VOUT unloaded.
Table 2.
Parameter
All Versions
Unit
Test Conditions/Comments
1.2
V max
This is the lower VDD/VSS threshold voltage for the reset function.
0
V typ
Above this, the reset is activated.
VB, High Threshold Voltage for VDD, VSS
9.5
V max
This is the higher VDD/VSS threshold voltage for the reset function.
6.4
V min
Below this, the reset is activated. Typically, 8 V.
VC, Low Threshold Voltage for VCC
1
V max
This is the lower VCC threshold voltage for the reset function.
0
V typ
Above this, the reset is activated.
VD, High Threshold Voltage for VCC
4
V max
This is the higher VCC threshold voltage for the reset function.
2.5
V min
Below this, the reset is activated. Typically, 3 V.
G2 RON
1
kΩ typ
On resistance of G2; VDD = 2 V; VSS = 2 V; IG2 = 1 mA.
1 A pull-down resistor (65 kΩ) on VOUT maintains 0 V output when VDD/VSS is below VA.
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