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ADS1209 bảng dữ liệu(PDF) 3 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  Two 1-Bit, 10MHz, 2nd-Order Delta-Sigma Modulators
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ADS1209 bảng dữ liệu(HTML) 3 Page - Texas Instruments

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ADS1209
www.ti.com
SBAS491 – FEBRUARY 2010
RECOMMENDED OPERATING CONDITIONS
PARAMETER
MIN
NOM
MAX
UNIT
Supply voltage, AVDD to AGND
4.5
5
5.5
V
Low-voltage levels
2.7
3.0
3.6
V
Supply voltage, BVDD to BGND
5V logic levels
4.5
5
5.5
V
Reference input voltage, VREF
0.5
2.5
2.6
V
Operating common-mode signal
0
AVDD
V
–0.92 ×
+0.92 ×
Analog inputs
+IN – (–IN)
V
VREF
VREF
External clock(1)
16
20
24
MHz
Operating ambient temperature range, TOA
–40
+125
°C
Specified ambient temperature range, TA
–40
+105
°C
(1)
With reduced accuracy, clock can go from 1MHz up to 33MHz; see Typical Characteristic curves.
ELECTRICAL CHARACTERISTICS
Over operating ambient temperature range of –40°C to +105°C, AVDD = 5V, BVDD = 3V, CHx+ = 0.2V to 4.8V, CHx– =
2.5V, VREFIN = VREFOUT = 2.5V (internal), CLKIN = 20MHz, and 16-bit Sinc
3 filter with OSR = 256, unless otherwise noted.
ADS1209
PARAMETER
TEST CONDITIONS
MIN
TYP(1)
MAX
UNIT
RESOLUTION
16
Bits
DC ACCURACY
VIN = ±2.3VPP
–8
±3.8
+8
LSB
INL
Integral linearity error(2)
VIN = ±2.0VPP
–4
±1.8
+4
LSB
Integral linearity match
1
4
LSB
DNL
Differential nonlinearity
–1
+1
LSB
VOS
Input offset error
–3
±1.5
+3
mV
Input offset error match
0.2
2
mV
TCVOS
Input offset error thermal drift
–8
1
+8
mV/°C
GERR
Gain error
Referenced to VREFIN
–0.5
±0.02
+0.5
% FSR
Gain error match
0.1
0.5
% FSR
TCGERR
Gain error thermal drift
±1.3
ppm/°C
PSRR
Power-supply rejection ratio
4.5V < AVDD < 5.5V
82
dB
ANALOG INPUTS
Full-scale differential input voltage
FSR
(CHx+) – (CHx–); CHx– = 2.5V
–VREFIN
+VREFIN
V
range
Specified differential input voltage
–0.92 ×
+0.92 ×
(CHx+) – (CHx–); CHx– = 2.5V
V
range
VREF
VREF
Absolute operating input voltage
0
AVDD
V
range
CI
Input capacitance
CHx to AGND
3
pF
IIL
Input leakage current
Clock turned off
–1
1
µA
RID
Differential input resistance
100
k
CID
Differential input capacitance
2.5
pF
At dc
108
dB
CMRR
Common-mode rejection ratio
VIN = ±1.25VPP at 40kHz
117
dB
BW
Bandwidth
Full-scale sine wave, –3dB
50
MHz
(1)
All typical values are at TA = +25°C.
(2)
Integral nonlinearity is defined as the maximum deviation of the line through the end points of the specified input range, expressed either
as the number of LSBs or as a percent of specified input range (4.6V).
Copyright © 2010, Texas Instruments Incorporated
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Số phần tương tự - ADS1209_1

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