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ADS7953SDBTG4 Datasheet(PDF) 11 Page - Texas Instruments

No. de pieza ADS7953SDBTG4
Descripción Electrónicos  Single-Ended, MicroPower, Serial Interface ADCs
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

ADS7953SDBTG4 Datasheet(HTML) 11 Page - Texas Instruments

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ADS7950, ADS7951, ADS7952, ADS7953, ADS7954, ADS7955
ADS7956, ADS7957, ADS7958, ADS7959, ADS7960, ADS7961
www.ti.com
SLAS605B – JUNE 2008 – REVISED JULY 2015
Electrical Characteristics: ADS7950/51/52/53 (continued)
VA = 2.7 V to 5.25 V, VBD = 1.7 V to 5.25 V, Vref = 2.5 V ± 0.1 V, TA = –40°C to 125°C, fsample = 1 MHz (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DYNAMIC CHARACTERISTICS
Total harmonic distortion(5)
100 kHz
–82
dB
Signal-to-noise ratio
100 kHz, ADS795XSB(2)
70
71.7
dB
100 kHz, ADS795XS(2)
70
71.7
Signal-to-noise + distortion
100 kHz, ADS795XSB(2)
69
71.3
dB
100 kHz, ADS795XS(2)
68
71.3
Spurious free dynamic range
100 kHz
84
dB
Small signal bandwidth
At –3 dB
47
MHz
Any off-channel with 100 kHz, Full-scale input to
channel being sampled with DC input (isolation
–95
crosstalk).
Channel-to-channel crosstalk
dB
From previously sampled to channel with 100
kHz, Full-scale input to channel being sampled
–85
with DC input (memory crosstalk).
EXTERNAL REFERENCE INPUT
Vref reference voltage at REFP
(6)
2
2.5
3
V
Reference resistance
100
k
ALARM SETTING
Higher threshold range
0
FFC
Hex
Lower threshold range
0
FFC
Hex
DIGITAL INPUT/OUTPUT
Logic family
CMOS
VIH
0.7*(+VBD
)
VIL
+VBD = 5 V
0.8
Logic level
V
VIL
+VBD = 3 V
0.4
VOH
At Isource = 200 μA
Vdd-0.2
VOL
At Isink = 200 μA
0.4
Data format MSB first
MSB First
POWER SUPPLY REQUIREMENTS
+VA supply voltage
2.7
3.3
5.25
V
+VBD supply voltage
1.7
3.3
5.25
V
At +VA = 2.7 to 3.6 V and 1 MHz throughput
1.8
mA
At +VA = 2.7 to 3.6 V static state
1.05
mA
Supply current (normal mode)
At +VA = 4.7 to 5.25 V and 1 MHz throughput
2.3
3
mA
At +VA = 4.7 to 5.25 V static state
1.1
1.5
mA
Power-down state supply current
1
μA
+VBD supply current
+VA = 5.25 V, fs = 1MHz
1
mA
Power-up time
1
μs
Invalid conversions after power up or
1
Numbers
reset
TEMPERATURE RANGE
Specified performance
–40
125
°C
(5)
Calculated on the first nine harmonics of the input frequency.
(6)
Device is designed to operate over Vref = 2 V to 3 V. However one can expect lower noise performance at Vref < 2.4 V. This is due to
SNR degradation resulting from lowered signal range.
Copyright © 2008–2015, Texas Instruments Incorporated
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Product Folder Links: ADS7950 ADS7951 ADS7952 ADS7953 ADS7954 ADS7955 ADS7956 ADS7957 ADS7958
ADS7959 ADS7960 ADS7961


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