參數(shù)資料
型號： TLC1518PW
廠商： Texas Instruments, Inc.
英文描述： 5-V, 10-BIT, 400 KSPS, 4/8 CHANNEL, LOW POWER, SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO POWER DOWN
中文描述： 5五，10位400 ksps的，4 / 8通道，低功耗，串行模數(shù)位自動(dòng)開機(jī)和下變頻器
文件頁數(shù)： 19/40頁
文件大小： 609K
代理商： TLC1518PW
TLC1514, TLC1518
5-V, 10-BIT, 400 KSPS, 4/8 CHANNEL, LOW POWER,
SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO POWER DOWN
SLAS252 – DECEMBER 1999
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
FIFO operation (continued)
power down
Writing 8000h to the device puts the device into a software power-down state. For a hardware power down, the
dedicated PWDN pin provides another way to power down the device asynchronously. These two power-down
modes power down the entire device including the built-in reference to save power. The internal reference
requires 20 ms to resume from either a software or hardware power down.
Auto power down mode is always enabled. This mode maintains the built-in reference if an internal reference
is used, so resumption is fast enough to be used between cycles.
The configuration register is not affected by any of the power down modes but the sweep operation sequence
has to be started over again. All FIFO contents are cleared by the hardware and software power-down modes.
power up and initialization
Initialization requires:
1.
Determine processor type by writing A000h to the TLC1514/18
2.
Configure the device
The first conversion after power up or resuming from power down is not valid.
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage range, GND to V
CC
Analog input voltage range
Reference input voltage
Digital input voltage range
Operating
virtual junction temperature range, T
J
Operating free-air temperature range, T
A
: TLC1514/18I
Storage temperature range, T
stg
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
–0.3 V to 6.5 V
–0.3 V to V
CC
+ 0.3 V
V
CC
+ 0.3 V
–0.3 V to V
CC
+ 0.3 V
–40
°
C to 150
°
C
–40
°
C to 85
°
C
–65
°
C to 150
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
recommended operating conditions
MIN
4.5
NOM
MAX
5.5
VCC
UNIT
V
V
V
V
V
V
V
ns
ns
ns
ns
Supply voltage, VCC
Positive external reference voltage input, VREFP (see Note 1)
Negative external reference voltage input, VREFM (note Note 1)
Differential reference voltage input, VREFP – VREFM (see Note 1)
Analog input voltage (see Note 1)
High level control input voltage, VIH
Low-level control input voltage, VIL
Rise time, for CS, CSTART SDI at 0.5 pF, tr(I/O)
Fall time, for CS, CSTART SDI at 0.5 pF, tf(I/O)
Rise time, for INT, EOC, SDO at 30 pF, tr(Output)
Fall time, for INT, EOC, SDO at 30 pF, tf(Output)
NOTE 1: When binary output format is used, analog input voltages greater than that applied to REFP convert as all ones (1111111111), while input
voltages less than that applied to REFM convert as all zeros (0000000000). The device is functional with reference down to 2 V (VREFP
– VREFM –1); however, the electrical specifications are no longer applicable.
5
2
0
2
0
2
VCC
VCC+0.2
VCC
2.1
0.6
4.76
2.91
2.43
2.3
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