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ADS7834 bảng dữ liệu(PDF) 3 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation.
tên linh kiện ADS7834
Giải thích chi tiết về linh kiện  12-Bit High-Speed, Low-Power Sampling ANALOG-TO-DIGITAL CONVERTER
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nhà sản xuất  BURR-BROWN [Burr-Brown (TI)]
Trang chủ  http://www.burr-brown.com
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ADS7834 bảng dữ liệu(HTML) 3 Page - Burr-Brown (TI)

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ADS7834
3
SBAS098A
www.ti.com
SPECIFICATIONS
At TA = –40°C to +85°C, +VCC = +5V, fSAMPLE = 500kHz, fCLK = 16 • fSAMPLE, internal reference, unless otherwise specified.
ADS7834P, E
ADS7834PB, EB
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
ANALOG INPUT
Full-Scale Input Span(1)
+IN – (–IN)
0
VREF
✻✻
V
Absolute Input Range
+IN
–0.2
VREF +0.2
✻✻
V
–IN
–0.2
+0.2
✻✻
V
Capacitance
25
pF
Leakage Current
1
µA
SYSTEM PERFORMANCE
Resolution
12
Bits
No Missing Codes
12
Bits
Integral Linearity Error
±1
±2
±0.5
±1
LSB(2)
Differential Linearity Error
±0.8
±0.5
±1LSB
Offset Error
±2
±5
±1
LSB
Gain Error(3)
25
°C
±12
±30
±7
±15
LSB
–40
°C to +85°C
±50
±35
LSB
Common-Mode Rejection
DC, 0.2Vp-p
70
dB
1MHz, 0.2Vp-p
50
dB
Noise
60
µVrms
Power Supply Rejection
Worst Case
∆, +V
CC = 5V ±5%
1.2
LSB
SAMPLING DYNAMICS
Conversion Time
1.625
µs
Acquisition Time
0.350
µs
Throughput Rate
500
kHz
Aperture Delay
5
ns
Aperture Jitter
30
ps
Step Response
350
ns
DYNAMIC CHARACTERISTICS
Signal-to-Noise Ratio
VIN = 5Vp-p at 10kHz
72
dB
Total Harmonic Distortion(4)
VIN = 5Vp-p at 10kHz
–78
–72
–82
–75
dB
Signal-to-(Noise+Distortion)
VIN = 5Vp-p at 10kHz
68
70
70
72
dB
Spurious Free Dynamic Range
VIN = 5Vp-p at 10kHz
72
78
75
82
dB
Usable Bandwidth
SNR > 68dB
350
kHz
REFERENCE OUTPUT
Voltage
IOUT = 0
2.475
2.50
2.525
2.48
2.52
V
Source Current(5)
Static Load
50
µA
Drift
IOUT = 0
20
ppm /
°C
Line Regulation
4.75V
≤ V
CC ≤ 5.25V
0.6
mV
REFERENCE INPUT
Range
2.0
2.55
✻✻
V
Resistance(6)
to Internal Reference Voltage
10
✻✻
k
DIGITAL INPUT/OUTPUT
Logic Family
CMOS
Logic Levels:
VIH
|IIH| ≤ +5µA
3.0
VCC +0.3
✻✻
V
VIL
|IIL| ≤ +5µA
–0.3
0.8
✻✻
V
VOH
IOH = –500µA
3.5
✻✻
V
VOL
IOL = 500µA
0.4
✻✻
V
Data Format
Straight Binary
POWER SUPPLY REQUIREMENT
+VCC
Specified Performance
4.75
5.25
✻✻
V
Quiescent Current
fSAMPLE = 500kHz
2.2
mA
Power-Down
0.5
mA
Power Dissipation
fSAMPLE = 500kHz
11
20
✻✻
mW
Power-Down
2.5
mW
TEMPERATURE RANGE
Specified Performance
–40
+85
✻✻
°C
✻ Specifications same as ADS7834P,E.
NOTES: (1) Ideal input span, does not include gain or offset error. (2) LSB means Least Significant Bit, with VREF equal to +2.5V, one LSB is 610µV. (3) Measured
relative to an ideal, full-scale input (+IN – (–IN)) of 2.499V. Thus, gain error includes the error of the internal voltage reference. (4) Calculated on the first nine
harmonics of the input frequency. (5) If the internal reference is required to source current to an external load, the reference voltage will change due to the internal
10k
Ω resistor. (6) Can vary ±30%.


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