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參數(shù)資料
型號(hào)： TLV2548CPWLE
廠(chǎng)商： TEXAS INSTRUMENTS INC
元件分類(lèi)： ADC
英文描述： 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
文件頁(yè)數(shù)： 11/39頁(yè)
文件大小： 648K
代理商： TLV2548CPWLE
TLV2544, TLV2548
2.7 V TO 5.5 V, 12-BIT, 200 KSPS, 4/8 CHANNEL, LOW POWER,
SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO POWER DOWN
SLAS198A –FEBRUARY 1999– REVISED AUGUST 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 powerdown, 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. It 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 power down modes.
power up and initialization
Initialization requires:
1.
Determine processor type by writing A000h to the TLV2544/48
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 VCC
–0.3 V to 6.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog input voltage range
–0.3 V to VCC + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference input voltage
VCC + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital input voltage range
–0.3 V to VCC + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating virtual junction temperature range, TJ
–40
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: TLV2544/48C
0
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TLV2544/48I
–40
°C to 85°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from 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.
recommended operating conditions
MIN
NOM
MAX
UNIT
Supply voltage, VCC
2.7
3.3
5.5
V
Positive external reference voltage input, VREFP (see Note 1)
2
VCC
V
Negative external reference voltage input, VREFM (note Note 1)
0
2
V
Differential reference voltage input, VREFP – VREFM (see Note 1)
2
VCC VCC+0.2
V
Analog input voltage (see Note 1)
0
VCC
V
High level control input voltage, VIH
2.1
V
Low-level control input voltage, VIL
0.6
V
Rise time, for CS, CSTART SDI at 0.5 pF, tr(I/O)
4.76
ns
Fall time, for CS, CSTART SDI at 0.5 pF, tf(I/O)
2.91
ns
Rise time, for INT, EOC, SDO at 30 pF, tr(Output)
2.43
ns
Fall time, for INT, EOC, SDO at 30 pF, tf(Output)
2.3
ns
NOTE 1: When binary output format is used, analog input voltages greater than that applied to REFP convert as all ones (111111111111), while
input voltages less than that applied to REFM convert as all zeros (000000000000). The device is functional with reference down to
2 V (VREFP – VREFM –1); however, the electrical specifications are no longer applicable.
相關(guān)PDF資料
PDF描述
TLV2544IPWLE 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16
TLV2544CPWLE 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16
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TLV2548CPWRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 200 kSPS Serial Out RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
TLV2548EVM 功能描述:EVALUATION MODULE FOR TLV2548 RoHS:是 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件
TLV2548IDW 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12bit 200KSPS SAR RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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