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參數(shù)資料
| 型號(hào)： | LTC1594CS |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 4- and 8-Channel, Micropower Sampling 12-Bit Serial I/O A/D Converters |
| 中文描述： | 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| 封裝： | 0.150 INCH, PLASTIC, SO-16 |
| 文件頁數(shù)： | 15/24頁 |
| 文件大小： | 430K |
| 代理商： | LTC1594CS |
15
LTC1594/LTC1598
APPLICATIO
S I
N
FOR
ATIO
U
BOARD LAYOUT CONSIDERATIONS
W
U
Grounding and Bypassing
The LTC1594/LTC1598 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 V
CC
pin should be bypassed to the ground plane with
a 10
μ
F tantalum capacitor with leads as short as possible.
If the power supply is clean, the LTC1594/LTC1598 can
also operate with smaller 1
μ
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 LTC1594/LTC1598 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 t
SMPL
time (see Figure 7).
Single-Ended Inputs
The sample-and-hold of the LTC1594/LTC1598 allows
conversion of rapidly varying signals. The input voltage
is sampled during the t
SMPL
time as shown in Figure 7.
The sampling interval begins after t
ON
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. LTC1594/LTC1598 ADCIN and COM Input Settling Windows
CLK
D
IN
D
OUT
MUXOUT = ADCIN
CH0 TO CH7
SAMPLE
HOLD
“ANALOG” INPUT MUST
SETTLE DURING
THIS TIME
t
SMPL
t
ON
t
CONV
CSADC = CSMUX = CS
D2
D1
EN
D0
DON‘T CARE
1ST BIT TEST “COM” INPUT MUST
SETTLE DURING THIS TIME
B11
COM
1594/98 F07
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| LTC1594IS | 4- and 8-Channel, Micropower Sampling 12-Bit Serial I/O A/D Converters |
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| LTC1598CG | 8-Bit, 25kSPS ADC Serial-Out, On-Chip 11-Ch. Analog MUX 20-PDIP |
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| LTC1595AIN8 | Serial 16-Bit Multiplying DACs |
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| LTC1594CS#TRPBF | 功能描述:IC A/D CONV 12BIT SRL 4CH 16SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端，單極 |
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