參數(shù)資料
型號： ADS1191IPBS
廠商： Texas Instruments
文件頁數(shù)： 45/67頁
文件大?。?/td> 0K
描述： IC AFE 16BIT 8KSPS 1CH 32TQFP
標準包裝： 250
位數(shù)： 16
通道數(shù)： 1
電壓 - 電源，模擬： 2.7 V ~ 5.25 V
電壓 - 電源，數(shù)字： 1.7 V ~ 3.6 V
封裝/外殼： 32-TQFP
供應商設備封裝： 32-TQFP（5x5）
包裝： 管件
SBAS566A – DECEMBER 2011 – REVISED SEPTEMBER 2012
ELECTRICAL CHARACTERISTICS (continued)
Minimum and maximum specifications apply from –40°C to +85°C. Typical specifications are at +25°C. All specifications at
DVDD = 1.8 V, AVDD – AVSS = 3 V
(1), V
REF = 2.42 V, external fCLK = 512 kHz, data rate = 500 SPS, CFILTER = 4.7 nF
gain = 6, unless otherwise noted.
ADS1191, ADS1192
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SYSTEM MONITORS
Analog supply reading error
2
%
Digital supply reading error
2
%
From power supply ramp after power-on-reset
32
ms
to DRDY low
Device wake up
From power-down mode to DRDY low
10
ms
From STANDBY mode to DRDY low
10
ms
VCAP1 settling time
1% accuracy with 1-F capacitor
0.5
s
Voltage
TA = +25°C
145
mV
Temperature sensor
reading
Coefficient
490
μV/°C
TEST SIGNAL
Signal frequency
See Register Map section for settings
At dc and 1 Hz
Hz
Signal voltage
See Register Map section for settings
±1
mV
Accuracy
±2
%
CLOCK
Nominal frequency
512
kHz
Internal oscillator clock frequency
TA = +25°C
±0.5
%
–40°C
≤ TA ≤ +85°C
±1.5
%
Internal oscillator start-up time
32
μs
Internal oscillator power consumption
30
μW
CLKSEL pin = 0, CLK_DIV = 0
485
512
562.5
kHz
External clock input frequency
CLKSEL pin = 0, CLK_DIV = 1
1.94
2.048
2.25
MHz
DIGITAL INPUT/OUTPUT (DVDD = 1.8 V to 3.6 V)
VIH (DVDD =
0.8 DVDD
DVDD + 0.1
V
1.8 V to 3.6 V)
VIL(DVDD =
–0.1
0.2 DVDD
V
1.8 V to 3.6 V)
Logic level
VIH (DVDD =
DVDD – 0.2
V
1.7 V to 1.8 V)
VIL (DVDD =
0.2
V
1.7 V to 1.8 V)
Input current (IIN)
0 V < VDigitalInput < DVDD
–10
+10
μA
POWER-SUPPLY REQUIREMENTS (RLD Amplifiers Turned Off)
AVDD
Analog supply
AVDD – AVSS
2.7
3
5.25
V
DVDD
Digital supply
1.7
1.8
3.6
V
AVDD – DVDD
–2.1
3.6
V
SUPPLY CURRENT
AVDD – AVSS = 3 V
205
A
IAVDD
ADS1192
AVDD – AVSS = 5 V
250
A
DVDD = 3.3 V
75
A
IDVDD
ADS1192
DVDD = 1.8 V
32
A
Copyright 2011–2012, Texas Instruments Incorporated
5
Product Folder Links: ADS1191 ADS1192
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