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参数资料
| 型号： | ADS1217 |
| 英文描述： | 8-Channel, 24-Bit ANALOG-TO-DIGITAL CONVERTER |
| 中文描述： | 8通道，24位模拟数字转换器 |
| 文件页数： | 4/28页 |
| 文件大小： | 458K |
| 代理商： | ADS1217 |
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ADS1217
SBAS260B
4
www.ti.com
ELECTRICAL CHARACTERISTICS: AV
DD
= 3V
All specifications at –40
°
C to +85
°
C, AV
DD
= +3V, DV
DD
= +2.7V to 5.25V, f
MOD
= 19.2kHz, PGA = 1, Buffer ON, R
DAC
= 75k
, f
DATA
= 10Hz, and V
REF
= +1.25V,
unless otherwise specified.
ADS1217
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ANALOG INPUT
(A
0
–
A
IN
7, A
INCOM
)
Full-Scale Input Voltage
Analog Input Range
(A
) – (A
IN–
)
Buffer OFF
Buffer ON
Buffer OFF
Buffer ON
±
2V
REF
/PGA
V
V
V
AGND – 0.1
AGND + 0.05
AV
DD
+ 0.1
AV
DD
– 1.5
Input Impedance
Input Current
Bandwidth
Fast Settling Filter
Sinc
2
Filter
Sinc
3
Filter
Programmable Gain Amplifier
Burnout Current Sources
10/PGA
0.5
M
nA
–3dB
–3dB
–3dB
0.469f
DATA
0.318f
DATA
0.262f
DATA
Hz
Hz
Hz
User Selectable Gain Ranges
1
128
2
μ
A
OFFSET DAC
Offset DAC Range
Offset DAC Monotonicity
Offset DAC Gain Error
Offset DAC Gain Error Drift
±
V
REF
/(PGA)
V
8
Bits
%
ppm/
°
C
±
1
2
SYSTEM PERFORMANCE
Resolution
No Missing Codes
Integral Nonlinearity
24
Bits
Bits
Sinc
3
Filter
24
End Point Fit, Differential Input,
Buffer Off, T = 25
°
C
Before Calibration
0.0003
0.0012
% of FSR
(1)
Offset Error
Offset Drift
Gain Error
Gain Error Drift
Common-Mode Rejection
15
0.04
0.010
1.0
ppm of FSR
ppm of FSR/
°
C
%
ppm/
°
C
dB
dB
dB
dB
dB
dB
Before Calibration
at DC
100
f
CM
= 60Hz, f
DATA
= 10Hz
f
CM
= 50Hz, f
DATA
= 50Hz
f
CM
= 60Hz, f
DATA
= 60Hz
f
SIG
= 50Hz, f
DATA
= 50Hz
f
SIG
= 60Hz, f
DATA
= 60Hz
130
120
120
100
100
Normal-Mode Rejection
Output Noise
Power-Supply Rejection
See Typical Characteristics
90
at DC, dB = –20 log(
V
OUT
/
V
DD
)
(2)
75
dB
VOLTAGE REFERENCE INPUT
Reference Input (V
)
Negative Reference Input (V
REF–
)
Positive Reference Input (V
REF+
)
Common-Mode Rejection
Common-Mode Rejection
Bias Current
(3)
V
REF
≡
(V
REF+
) – (V
REF–
)
0.1
1.25
1.3
V
V
V
dB
dB
μ
A
AGND – 0.1
(V
REF–
) + 0.1
(V
REF+
) – 0.1
AV
DD
+ 0.1
at DC
120
120
0.65
f
VREFCM
= 60Hz, f
= 60Hz
V
REF
= 1.25V
ON-CHIP VOLTAGE REFERENCE
Output Voltage
Short-Circuit Current Source
Short-Circuit Current Sink
Drift
Noise
Output Impedance
Startup Time
REF HI = 0
1.2
1.25
3
50
15
10
3
5
1.3
V
mA
μ
A
ppm/
°
C
μ
Vrms
ms
V
RCAP
= 0.1
μ
F, BW = 0.1Hz to 100Hz
Sourcing 100
μ
A
IDAC
Full-Scale Output Current
R
DAC
= 75k
, Range = 1
R
DAC
= 75k
, Range = 2
R
DAC
= 75k
, Range = 3
R
DAC
= 15k
, Range = 3
0.5
1
2
20
mA
mA
mA
mA
k
Bits
V
Current Setting Resistance (R
DAC
)
Monotonicity
Compliance Voltage
Output Impedance
PSRR
Gain Error
Gain Error Drift
Gain Error Mismatch
Gain Error Mismatch Drift
10
8
0
R
DAC
= 75k
AV
DD
– 1
See Typical Characteristics
600
5
75
0.25
15
V
OUT
= AV
/2, Code > 16
Individual IDAC
Individual IDAC
Between IDACs, Same Range and Code
Between IDACs, Same Range and Code
ppm/V
%
ppm/
°
C
%
ppm/
°
C
NOTES: (1) FSR is Full-Scale Range. (2)
V
OUT
is change in digital result. (3) 12pF switched capacitor at f
SAMP
clock frequency.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADS1217EVM | 功能描述:数据转换 IC 开发工具 ADS1217 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
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| ADS1217IPFBR | 功能描述:模数转换器 - ADC 8-Ch 24-Bit ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| ADS1217IPFBRG4 | 功能描述:模数转换器 - ADC 8-Ch 24B ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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