参数资料
型号: AD7298BCPZ
厂商: Analog Devices Inc
文件页数: 21/25页
文件大小: 0K
描述: IC ADC 12BIT SPI/SRL 1M 20LFCSP
特色产品: AD7298 ADC with Temperature Sensor
标准包装: 1
位数: 12
采样率(每秒): 1M
数据接口: DSP,串行,SPI?
转换器数目: 1
功率耗散(最大): 22.7mW
电压电源: 单电源
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 20-WFQFN 裸露焊盘,CSP
供应商设备封装: 20-LFCSP-WQ(4x4)
包装: 托盘
输入数目和类型: 8 个单端,单极
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
Input Capacitance, CIN3
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
Track-and-Hold Acquisition Time3
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
Power Dissipation7
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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