APPLICATIONS IN
參數(shù)資料
型號: LTC1598LIG#TR
廠商: Linear Technology
文件頁數(shù): 7/24頁
文件大?。?/td> 0K
描述: IC ADC 12BIT 3V 8CH SAMPL 24SSOP
標準包裝: 1,800
位數(shù): 12
采樣率(每秒): 10.5k
數(shù)據(jù)接口: MICROWIRE?,QSPI?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 480µW
電壓電源: 單電源
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-SSOP(0.209",5.30mm 寬)
供應商設備封裝: 24-SSOP
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 8 個單端,單極
15
LTC1594L/LTC1598L
15948lfb
APPLICATIONS INFORMATION
WU
U
BOARD LAYOUT CONSIDERATIONS
Grounding and Bypassing
The LTC1594L/LTC1598L are easy to use if some care is
taken. They should be used with an analog ground plane
and single point grounding techniques. The GND pin
should be tied directly to the ground plane.
The VCC pin should be bypassed to the ground plane with
a 10
Ftantalumcapacitorwithleadsasshortaspossible.
If the power supply is clean, the LTC1594L/LTC1598L
can also operate with smaller 1
F or less surface mount
or ceramic bypass capacitors. All analog inputs should
be referenced directly to the single point ground. Digital
inputs and outputs should be shielded from and/or
routed away from the reference and analog circuitry.
SAMPLE-AND-HOLD
Both the LTC1594L/LTC1598L provide a built-in sample-
and-hold (S&H) function to acquire signals through the
selected channel, assuming the ADCIN and MUXOUT
pins are tied together. The S & H of these parts acquire
input signals through the selected channel relative to
COM input during the tSMPL time (see Figure 7).
Single-Ended Inputs
The sample-and-hold of the LTC1594L/LTC1598L allows
conversion of rapidly varying signals. The input voltage
is sampled during the tSMPL time as shown in Figure 7.
The sampling interval begins after tON time once the CS
is pulled low and continues until the second falling CLK
edge after the CS is low (see Figure 7). On this falling CLK
Figure 7. LTC1594L/LTC1598L ADCIN and COM Input Settling Windows
CLK
DIN
DOUT
MUXOUT = ADCIN
CH0 TO CH7
SAMPLE
HOLD
“ANALOG” INPUT MUST
SETTLE DURING
THIS TIME
tSMPL
tON
tCONV
CSADC = CSMUX = CS
D2
D1
EN
D0
DON‘T CARE
1ST BIT TEST “COM” INPUT MUST
SETTLE DURING THIS TIME
B11
COM
1594L/98L F07
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