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| 型號(hào)： | ADS8517IPWR |
| 廠(chǎng)商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | ADC |
| 英文描述： | 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PDSO28 |
| 封裝： | GREEN, PLASTIC, TSSOP-28 |
| 文件頁(yè)數(shù)： | 23/38頁(yè) |
| 文件大?。?/td> | 948K |
| 代理商： | ADS8517IPWR |
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www.ti.com ................................................................................................................................................. SLAS527A – SEPTEMBER 2008 – REVISED JUNE 2009
ELECTRICAL CHARACTERISTICS (continued)
At TA = -40°C to +85°C, fS = 200 kHz, VDIG = VANA = 5 V, using internal reference (see Figure 39), unless otherwise noted.
ADS8517I
ADS8517IB(1)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
THROUGHPUT SPEED
Conversion time
2.5
s
Complete cycle
Acquire and convert
5
s
Throughput rate
200
kHz
DC ACCURACY
INL
Integral linearity error
–3
3
–1.5
1.5
LSB(2)
DNL
Differential linearity error
–2
3
–1
1.5
LSB
No missing codes
15
16
Bits
Transition noise(3)
0.9
0.8
LSB
Gain error
±0.2
±0.1
%
Internal reference
–0.75
0.75
–0.75
0.75
%
Full-scale error(4)
External 2.5-V reference
–0.75
0.75
–0.75
0.75
%
Internal reference
±9
ppm/°C
Full-scale error drift
External 2.5-V reference
±1
ppm/°C
BPZ
Bipolar zero error
±10 V range
–5
±1
5
–2
±1
2
mV
Bipolar zero error drift
±10 V range
±0.6
ppm/°C
UPZ
Unipolar zero error
0 V to 5 V, 0 V to 4 V ranges
–3
±0.1
3
–2
±0.1
2
mV
Unipolar zero error drift
0 V to 5 V, 0 V to 4 V ranges
±0.15
ppm/°C
Recovery time to rated accuracy
2.2-
F capacitor to CAP
1
ms
from power down(5)
+4.75 V < VANA < +5.25 V
–8
+8
–6
+6
Power-supply sensitivity
LSB
(VDIG = VANA = VS)
+4.5 V < VANA < +5.5 V
–20
+20
–12
+12
AC ACCURACY
SFDR
Spurious-free dynamic range
fIN = 10 kHz, ±10 V
92
100
96
101
dB(6)
THD
Total harmonic distortion
fIN = 10 kHz, ±10 V
–97
–92
–98
–95
dB
fIN = 10 kHz, ±10 V
85
88
87
88.5
SINAD
Signal-to-(noise+distortion)
dB
–60 dB Input
29
SNR
Signal-to-noise ratio
fIN = 10 kHz, ±10 V
85
88
89
dB
SNR usable bandwidth(7)
fIN = 10 kHz, ±10 V
130
kHz
SNR full-power bandwidth (–3 dB)
fIN = 10 kHz, ±10 V
600
kHz
SAMPLING DYNAMICS
Aperture delay
40
ns
Aperture jitter
20
ps
Transient response
FS step
5
s
Overvoltage recovery(8)
750
ns
(2)
LSB means Least Significant Bit. One LSB for the ±10 V input range is 305
V.
(3)
Typical rms noise at worst-case transitions.
(4)
Full-scale error is the worst case of –Full Scale or +Full Scale untrimmed deviation from ideal first and last code transitions, divided by
the transition voltage (not divided by the full-scale range) and includes the effect of offset error.
(5)
This is the time delay after the ADS8517 is brought out of Power-Down mode until all internal settling occurs and the analog input is
acquired to rated accuracy. A Convert command after this delay will yield accurate results.
(6)
All specifications in dB are referred to a full-scale input.
(7)
Usable bandwidth defined as full-scale input frequency at which Signal-to-(Noise + Distortion) degrades to 60 dB.
(8)
Recovers to specified performance after 2 x FS input overvoltage.
Copyright 2008–2009, Texas Instruments Incorporated
3
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