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參數(shù)資料
型號(hào): TLV1548QDBRQ1
廠商: TEXAS INSTRUMENTS INC
元件分類(lèi): ADC
英文描述: 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封裝: ROHS COMPLIANT, PLASTIC, SSOP-20
文件頁(yè)數(shù): 5/34頁(yè)
文件大小: 532K
代理商: TLV1548QDBRQ1
TLV1548Q1
LOW VOLTAGE 10BIT ANALOGTODIGITAL CONVERTER
WITH SERIAL CONTROL AND 8 ANALOG INPUTS
SGLS172B JUNE 2003 REVISED APRIL 2008
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
11-to-1
Analog
MUX
Input
Data
Register
2-to-1
Sample-
and-
Hold
Function
SAR Latch
Threshold
Detect
10-to-1 Select
Output Shift Clock
Conversion
Clock
OSC
Invert
2-to-1
If_mode
Input Shift Clock
DSP§
SMCLK
Control
State
Machine
If_mode
Invert
EOC
DATA OUT
INV CLK
CS
FS
I/O CLK
REF+
REF
A0A7
TEST 02
DATA IN
Vref
REF+
REF
Microprocessor
Successive approximation register
If_mode = 1, microprocessor interface mode
§ If_mode = 0, DSP interface mode
Figure 5. Clock Scheme
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC (see Note 1)
0.5 V to 6.5 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, II (any input)
±20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak total input current (all inputs)
30 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: TLV1548Q
40
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal resistance, Junction-to-Air,
θJA
114.2
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 GND with REF and GND wired together (unless otherwise noted).
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