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| 型号： | PGA309AIPWT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封装： | GREEN, PLASTIC, TSSOP-16 |
| 文件页数： | 21/24页 |
| 文件大小： | 661K |
| 代理商： | PGA309AIPWT |
SBOS292C – DECEMBER 2003 – REVISED JANUARY 2011
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Boldface limits apply over the specified temperature range, TA = –40°C to +125°C.
At TA = +25°C, VSA= VSD = +5V (VSA = VSUPPLY ANALOG, VSD = VSUPPLY DIGITAL; VSA must equal VSD), GNDD = GNDA = 0, and VREF
= REFIN/REFOUT = +5V, unless otherwise noted.
PGA309
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
Temperature ADC. continued
xx Offset vs VSA
GPGA = 1
800
mV/V
GPGA = 2
400
mV/V
GPGA = 4
200
mV/V
GPGA = 8
150
mV/V
xx Gain Error
0.05
0.50
%
xx Gain Error Drift
5
50
ppm/°C
xx Noise
All gains
< 1
LSB
xx Gain vs VSA
80
ppm/V
xx Common-Mode Rejection
At dc and GPGA = 8
105
dB
At dc and GPGA = 1
100
dB
Temp ADC Ext. REF (VREFT = VREF, VEXC, or VSA)
Register 6, bit D8 = 0
xx Full-Scale Input Voltage
(+Input)
(Input)
±VREFT/GPGA
V
xx Differential Input Impedance
2.4/GPGA
M
Ω
xx Common-Mode Input Impedance
GPGA = 1
8
M
Ω
GPGA = 2
8
M
Ω
GPGA = 4
8
M
Ω
GPGA = 8
8
M
Ω
xx Resolution
R1, R0 = ‘00’, ADC2X = ‘0’, conversion time = 6ms
11
Bits + Sign
R1, R0 = ‘01’, ADC2X = ‘0’, conversion time = 24ms
13
Bits + Sign
R1, R0 = ‘10’, ADC2X = ‘0’, conversion time = 50ms
14
Bits + Sign
R1, R0 = ‘11’, ADC2X = ‘0’, conversion time = 100ms
15
Bits + Sign
xx Integral Nonlinearity
0.01
%
xx Offset Error
GPGA = 1
2.5
mV
GPGA = 2
1.25
mV
GPGA = 4
0.7
mV
GPGA = 8
0.3
mV
xx Offset Drift
GPGA = 1
1.5
mV/°C
GPGA = 2
1.0
mV/°C
GPGA = 4
0.7
mV/°C
GPGA = 8
0.6
mV/°C
xx Gain Error
0.2
%
xx Gain Error Drift
2
ppm/°C
xx Gain vs VSA
80
ppm/V
xx Common-Mode Rejection
At dc and GPGA = 8
100
dB
At dc and GPGA = 1
85
dB
External Temperature Current Excitation
ITEMP
Register 6, bit D11 = 1
xx Current Excitation
5.8
7
8
mA
xx Temperature Drift
5
nA/°C
xx Voltage Compliance
VSA 1.2
V
6
Copyright 2003–2011, Texas Instruments Incorporated
Product Folder Link(s): PGA309
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