參數(shù)資料
型號(hào): LTC1290DISW#TRPBF
廠商: Linear Technology
文件頁數(shù): 4/32頁
文件大?。?/td> 0K
描述: IC DATA ACQ SYS 12BIT 20-SOIC
標(biāo)準(zhǔn)包裝: 1,000
類型: 數(shù)據(jù)采集系統(tǒng)(DAS),ADC
分辨率(位): 12 b
采樣率(每秒): 50k
數(shù)據(jù)接口: 串行,并聯(lián)
電壓電源: 雙 ±
電源電壓: ±5 V,5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 20-SOIC
包裝: 帶卷 (TR)
12
LTC1290
1290fe
U
S
A
O
PPLICATI
WU
U
I FOR ATIO
Unipolar/Bipolar (UNI)
The fifth input bit (UNI) determines whether the conver-
sion will be unipolar or bipolar. When UNI is a logical one,
a unipolar conversion will be performed on the selected
Unipolar Transfer Curve (UNI = 1)
input voltage. When UNI is a logical zero, a bipolar conver-
sion will result. The input span and code assignment for
each conversion type are shown in the figures below.
Unipolar Output Code (UNI = 1)
Bipolar Transfer Curve (UNI = 0)
Bipolar Output Code (UNI = 0)
0V
1LSB
V
REF
2LSB
V
REF
1LSB
V
REF
VIN
0 0 0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 0
LTC1290 AI04b
OUTPUT CODE
1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 0
0 0 0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0 0 0
INPUT VOLTAGE
VREF – 1LSB
VREF – 2LSB
1LSB
0V
INPUT VOLTAGE
(VREF = 5V)
4.9988V
4.9976V
0.0012V
0V
LTC1290 AI04a
OUTPUT CODE
1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 0
1 0 0 0 0 0 0 0 0 0 0 1
1 0 0 0 0 0 0 0 0 0 0 0
INPUT VOLTAGE
–1LSB
–2LSB
–(VREF) + 1LSB
– (VREF)
INPUT VOLTAGE
(VREF = 5V)
–0.0024V
–0.0048V
–4.9976V
–5.0000V
OUTPUT CODE
0 1 1 1 1 1 1 1 1 1 1 1
0 1 1 1 1 1 1 1 1 1 1 0
0 0 0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0 0 0
INPUT VOLTAGE
VREF – 1LSB
VREF – 2LSB
1LSB
0V
INPUT VOLTAGE
(VREF = 5V)
4.9976V
4.9851V
0.0024V
0V
LTC1290 AI05a
1LSB
V
REF
2LSB
V
REF
1LSB
V
REF
VIN
1 1 1 1 1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0 0 0 0 0
0 1 1 1 1 1 1 1 1 1 1 0
0 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 0
1 0 0 0 0 0 0 0 0 0 0 1
1 0 0 0 0 0 0 0 0 0 0 0
–1LSB
–2LSB
–V
REF
–V
REF
+
1LSB
LTC1290 AI05b
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