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參數(shù)資料
| 型號： | EVAL-AD7298SDZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 21/25頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL FOR AD7298 |
| 標準包裝： | 1 |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 1M |
| 數(shù)據(jù)接口： | DSP，串行，SPI? |
| 工作溫度： | -40°C ~ 125°C |
| 已用 IC / 零件： | AD7298 |
| 已供物品： | 板，纜線，CD |
AD7298
Rev. B | Page 4 of 24
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
LOGIC INPUTS
Input High Voltage, VINH
0.7 × VDRIVE
V
Input Low Voltage, VINL
+0.3 × VDRIVE
V
Input Current, IIN
±0.01
±1
μA
VIN = 0 V or VDRIVE
3
pF
LOGIC OUTPUTS
Output High Voltage, VOH
VDRIVE 0.3
V
VDRIVE < 1.8
VDRIVE 0.2
V
VDRIVE ≥ 1.8
Output Low Voltage, VOL
0.4
V
Floating State Leakage Current
±0.01
±1
μA
Floating State Output Capacitance3
8
pF
INTERNAL TEMPERATURE SENSOR
Operating Range
40
+125
Accuracy
±1
±2
°C
TA = 40°C to +85°C
±1
±3
°C
TA = +85°C to +125°C
Resolution
0.25
°C
LSB size
CONVERSION RATE
Conversion Time
1
t2 + 16 × tSCLK
μs
For VIN0 to VIN7, with one cycle latency
100
μs
TSENSE temperature sensor channel
100
ns
Full-scale step input
Throughput Rate
1
MSPS
fSCLK = 20 MHz, for analog voltage
conversions, one cycle latency
10
KSPS
For the TSENSE channel, one cycle latency
POWER REQUIREMENTS
Digital inputs = 0 V or VDRIVE
VDD
2.8
3
3.6
V
VDRIVE
1.65
3
3.6
V
ITOTAL6
VDD = 3.6 V, VDRIVE = 3.6 V
Normal Mode (Operational)
5.8
6.3
mA
Normal Mode (Static)
4.1
4.6
mA
Partial Power-Down Mode
2.7
3.3
mA
Full Power-Down Mode
1
1.6
μA
TA = 40°C to +25°C
10
μA
TA = 40°C to +125°C
Normal Mode (Operational)
17.4
18.9
mW
VDD = 3 V, VDRIVE = 3 V
22.7
mW
Normal Mode (Static)
14.8
16.6
mW
Partial Power-Down Mode
9.8
11.9
mW
Full Power-Down Mode
3.6
5.8
μW
TA = 40°C to +25°C
36
μW
TA = 40°C to +125°C
1 See the Terminology section.
2 All specifications expressed in decibels are referred to full-scale input, FSR, and tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
3 Sample tested during initial release to ensure compliance.
4 Refers to Pin VREF specified for 25oC.
5 A correction factor may be required on the temperature sensor results when using an external VREF (see the Temperature Sensor Averaging section).
6 ITOTAL is the total current flowing in VDD and VDRIVE.
7 Power dissipation is specified with VDD = VDRIVE = 3.6 V, unless otherwise noted.
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