參數(shù)資料
型號： ADS7953SRHBT
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 16-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQCC32
封裝： GREEN, PLASTIC, PQFP-32
文件頁數(shù)： 63/63頁
文件大?。?/td> 1734K
代理商： ADS7953SRHBT
www.ti.com
SLAS605A – JUNE 2008 – REVISED JANUARY 2010
ELECTRICAL CHARACTERISTICS, ADS7958/59/60/61 (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
Any off-channel with 100kHz, Full-scale input to
–95
channel being sampled with DC input.
Channel-to-channel crosstalk
dB
From previously sampled to channel with 100kHz,
Full-scale input to channel being sampled with DC
–85
input.
ETERNAL REFERENCE INPUT
Vref reference voltage at REFP
2.0
2.5
3.0
V
Reference resistance
100
k
ALARM SETTING
Higher threshold range
000
FF
Hex
Lower threshold range
000
FF
Hex
DIGITAL INPUT/OUTPUT
Logic family
CMOS
VIH
0.7*(+VBD)
VIL
+VBD = 5 V
0.8
Logic level
VIL
+VBD = 3 V
0.4
V
VOH
At Isource = 200 mA
Vdd-0.2
VOL
At Isink = 200 mA
0.4
Data format
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 1MHz 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
mA
+VBD supply current
+VA = 5.25V, fs = 1MHz
1
mA
Power-up time
1
mSec
Invalid conversions after power up or
1 Numbers
reset
TEMPERATURE RANGE
Specified performance
–40
125
°C
TIMING REQUIREMENTS (see Figure 45, Figure 46, Figure 47, and Figure 48)
All specifications typical at –40°C to 125°C, +VA = 2.7 V to 5.25 V (unless otherwise specified)
PARAMETER
TEST CONDITIONS(1) (2)
MIN
TYP
MAX
UNIT
+VBD = 1.8 V
16
tconv
Conversion time
+VBD = 3 V
16
SCLK
+VBD = 5 V
16
+VBD = 1.8 V
40
Minimum quiet sampling time needed from bus
tq
+VBD = 3 V
40
ns
3-state to start of next conversion
+VBD = 5 V
40
(1)
1.8V specifications apply from 1.7V to 1.9V, 3V specifications apply from 2.7V to 3.6V, 5V specifications apply from 4.75V to 5.25V.
(2)
With 50-pF load
Copyright 2008–2010, Texas Instruments Incorporated
9
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