APPLICATIONS INFOR
參數(shù)資料
型號: LTC1418AIN#PBF
廠商: Linear Technology
文件頁數(shù): 5/28頁
文件大?。?/td> 0K
描述: IC A/D CONV 14BIT SRL&PAR 28-DIP
標(biāo)準包裝: 14
位數(shù): 14
采樣率(每秒): 200k
數(shù)據(jù)接口: 串行,并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 21.5mW 單極;31.5mW 雙極
電壓電源: 雙 ±
工作溫度: -40°C ~ 85°C
安裝類型: 通孔
封裝/外殼: 28-DIP(0.300",7.62mm)
供應(yīng)商設(shè)備封裝: 28-PDIP
包裝: 管件
輸入數(shù)目和類型: 2 個單端,單極;2 個單端,雙極;1 個差分,單極;1 個差分,雙極
配用: DC178A-ND - BOARD SAR ADC LTC1418
13
LTC1418
APPLICATIONS INFORMATION
WU
U
Figure 9a. LTC1418 Unipolar Transfer Characteristics
ANALOG INPUT
1418 F10a
5V
R4
100
R2
50k
R3
24k
R7
48k
R6
24k
R1
50k
R5
47k
0.1
F
10
F
R8
100
1
2
3
4
5
LTC1418
AIN
+
AIN
VREF
REFCOMP
AGND V
SS
VDD
Figure 10a. Offset and Full-Scale Adjust Circuit
If – 5V Is Not Available
UNIPOLAR / BIPOLAR OPERATION AND ADJUSTMENT
Figure 9a shows the ideal input/output characteristics for
the LTC1418. The code transitions occur midway between
successive integer LSB values (i.e., 0.5LSB, 1.5LSB,
2.5LSB, … FS – 1.5LSB). The output code is natural binary
with 1LSB = FS/16384 = 4.096V/16384 = 250
V.Figure9b
shows the input/output transfer characteristics for the
bipolar mode in two’s complement format.
Unipolar Offset and Full-Scale Error Adjustment
In applications where absolute accuracy is important,
offset and full-scale errors can be adjusted to zero. Offset
error must be adjusted before full-scale error. Figures
10a and 10b show the extra components required for full-
scale error adjustment. Zero offset is achieved by adjust-
ing the offset applied to the AIN– input. For zero offset
error apply 125
V (i.e., 0.5LSB) at the input and adjust
the offset at the AIN– input until the output code flickers
between 0000 0000 0000 00 and 0000 0000 0000 01. For
full-scale adjustment, an input voltage of 4.095625V
(FS – 1.5LSBs) is applied to AIN+ and R2 is adjusted until
the output code flickers between 1111 1111 1111 10 and
1111 1111 1111 11.
Bipolar Offset and Full-Scale Error Adjustment
Bipolar offset and full-scale errors are adjusted in a similar
fashion to the unipolar case. Again, bipolar offset error
must be adjusted before full-scale error. Bipolar offset
Figure 9b. LTC1418 Bipolar Transfer Characteristics
Figure 10b. Offset and Full-Scale Adjust Circuit
If – 5V Is Available
INPUT VOLTAGE (V)
0V
OUTPUT
CODE
–1
LSB
1418 F9b
011...111
011...110
000...001
000...000
100...000
100...001
111...110
1
LSB
BIPOLAR
ZERO
111...111
FS/2 – 1LSB
–FS/2
FS = 4.096V
1LSB = FS/16384
ANALOG INPUT
1418 F10b
5V
–5V
1N5817
R4
100
R2
50k
R3
24k
R6
24k
R1
50k
R5
47k
0.1
F
*
*ONLY NEEDED IF VSS GOES
ABOVE GROUND
10
F
1
2
3
4
5
LTC1418
AIN
+
AIN
VREF
REFCOMP
AGND V
SS
VDD
INPUT VOLTAGE (V)
0V
OUTPUT
CODE
FS – 1LSB
1418 F9a
111...111
111...110
111...101
111...100
000...000
000...001
000...010
000...011
1
LSB
UNIPOLAR
ZERO
1LSB =
FS
16384
4.096V
16384
=
相關(guān)PDF資料
PDF描述
MAX3317ECAP+ IC TXRX RS232 460KBPS 20-SSOP
VI-BTF-MW-F3 CONVERTER MOD DC/DC 72V 100W
VI-2N0-IU-F3 CONVERTER MOD DC/DC 5V 200W
MS3108A22-23S CONN PLUG 8POS RT ANG W/SCKT
VI-BTF-MW-F2 CONVERTER MOD DC/DC 72V 100W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1418CG 功能描述:IC A/D CONV 14BIT SRL&PAR 28SSOP RoHS:否 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 個單端,單極
LTC1418CG#PBF 功能描述:IC A/D CONV 14BIT SRL&PAR 28SSOP 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)準包裝:1 系列:microPOWER™ 位數(shù):8 采樣率(每秒):1M 數(shù)據(jù)接口:串行,SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散(最大):- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤(4x4) 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個單端,單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6
LTC1418CG#TR 功能描述:IC A/D CONV 14BIT SRL&PAR 28SSOP RoHS:否 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 個單端,單極
LTC1418CG#TRPBF 功能描述:IC A/D CONV 14BIT SRL&PAR 28SSOP 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 個單端,單極
LTC1418CN#PBF 功能描述:IC A/D CONV 14BIT SRL&PAR 28-DIP 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)準包裝:1,000 系列:- 位數(shù):12 采樣率(每秒):300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散(最大):75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC(0.295",7.50mm 寬) 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端,單極;1 個單端,雙極