參數(shù)資料
型號(hào)： TLV1543IDBLE
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： ADC
英文描述： 11-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封裝： PLASTIC, SSOP-20
文件頁(yè)數(shù)： 27/29頁(yè)
文件大?。?/td> 804K
代理商： TLV1543IDBLE
TLV1543C, TLV1543I, TLV1543M
3.3V 10BIT ANALOGTODIGITAL CONVERTERS
WITH SERIAL CONTROL AND 11 ANALOG INPUTS
SLAS072E DECEMBER 1992 REVISED JANUARY 2004
7
WWW.TI.COM
converter and analog input (continued)
SC
Threshold
Detector
Node 512
REF
REF+
ST
512
VI
To Output
Latches
REF
ST
REF+
REF
ST
REF+
REF
ST
REF+
REF
ST
REF+
REF
ST
REF+
REF
ST
REF+
REF
ST
REF
ST
1
2
4
8
16
128
256
Figure 1. Simplified Model of the Successive-Approximation System
chip-select operation
The trailing edge of CS starts all modes of operation, and CS can abort a conversion sequence in any mode.
A high-to-low transition on CS within the specified time during an ongoing cycle aborts the cycle, and the device
returns to the initial state (the contents of the output data register remain at the previous conversion result).
Exercise care to prevent CS from being taken low close to completion of conversion because the output data
can be corrupted.
reference voltage inputs
There are two reference inputs used with these devices: REF + and REF . These voltage values establish the
upper and lower limits of the analog input to produce a full-scale and zero-scale reading respectively. The values
of REF +, REF , and the analog input should not exceed the positive supply or be lower than GND consistent
with the specified absolute maximum ratings. The digital output is at full scale when the input signal is equal
to or higher than REF + and at zero when the input signal is equal to or lower than REF .
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC (see Note 1): TLV1543C/TLV1543I
0.5 V to 6.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . .
TLV1543M
0.5 V to 6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI (any input)
0.3 V to VCC + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, VO
0.3 V to VCC + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Positive reference voltage, Vref+
VCC + 0.1 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Negative reference voltage, Vref
0.1 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak input current (any input), I(p-p)
±20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak total input current (all inputs), Ip
±30 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: TLV1543C
0
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TLV1543I
40
°C to 85°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TLV1543M
55
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from the case for 10 seconds
260
°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values are with respect to digital ground with REF and GND wired together (unless otherwise noted).
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