參數(shù)資料
型號(hào)： LTC1293DCSW#PBF
廠商： Linear Technology
文件頁數(shù)： 26/28頁
文件大?。?/td> 0K
描述： IC DATA ACQ SYSTEM 12BIT 16-SOIC
標(biāo)準(zhǔn)包裝： 47
類型： 數(shù)據(jù)采集系統(tǒng)（DAS），ADC
分辨率（位）： 12 b
采樣率（每秒）： 46.5k
數(shù)據(jù)接口： 串行，并聯(lián)
電壓電源： 雙 ±
電源電壓： ±5V，5V
工作溫度： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 16-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 16-SOIC
包裝： 管件
產(chǎn)品目錄頁面： 1346 (CN2011-ZH PDF)
7
LTC1293/LTC1294/LTC1296
129346fs
PI FU CTIO S
U
UU
#
PIN
FUNCTION
DESCRIPTION
1 – 6
CH0 – CH5
Analog Inputs
The analog inputs must be free of noise with respect to AGND.
7
COM
Common
The common pin defines the zero reference point for all single ended inputs. It must be free of noise and is
usually tied to the analog ground plane.
8
DGND
Digital Ground
This is the ground for the internal logic. Tie to the ground plane.
9V
–
Negative Supply
Tie V
– to most negative potential in the circuit (Ground in single supply applications).
10
AGND
Analog Ground
AGND should be tied directly to the analog ground plane.
11
VREF
Ref. Input
The reference inputs must be kept free of noise with respect to AGND.
12
DIN
Data Input
The A/D configuration word is shifted into this input.
13
DOUT
Digital Data Output The A/D conversion result is shifted out of this output.
14
CS
Chip Select Input
A logic low on this input enables data transfer.
15
CLK
Clock
This clock synchronizes the serial data transfer and controls A/D conversion rate.
16
VCC
Positive supply
This supply must be kept free of noise and ripple by bypassing directly to the analog ground plane.
LTC1293
#
PIN
FUNCTION
DESCRIPTION
1 –8
CH0 – CH7
Analog Inputs
The analog inputs must be free of noise with respect to AGND.
9
COM
Common
The common pin defines the zero reference point for all single ended inputs. It must be free of noise and is
usually tied to the analog ground plane.
10
DGND
Digital Ground
This is the ground for the internal logic. Tie to the ground plane.
11
V
–
Negative Supply
Tie V
– to most negative potential in the circuit (Ground in single supply applications).
12
AGND
Analog Ground
AGND should be tied directly to the analog ground plane.
13, 14 REF
–, REF+ Ref. Inputs
The reference inputs must be kept free of noise with respect to AGND. The A/D sees a reference voltage equal
to the difference between REF
+ and REF–.
15
DIN
Data Input
The A/D configuration word is shifted into this input.
16
DOUT
Digital Data Output The A/D conversion result is shifted out of this output.
17
CS
Chip Select Input
A logic low on this input enables data transfer.
18
CLK
Clock
This clock synchronizes the serial data transfer and controls A/D converion rate.
19, 20 AVCC, DVCC
Positive Supplies
These supplies must be kept free of noise and ripple by bypassing directly to the analog ground plane. AVCC
and DVCC must be tied together.
LTC1294
#
PIN
FUNCTION
DESCRIPTION
1 –8
CH0 – CH7
Analog Inputs
The analog inputs must be free of noise with respect to AGND.
9
COM
Common
The common pin defines the zero reference point for all single ended inputs. It must be free of noise and is
usually tied to the analog ground plane.
10
DGND
Digital Ground
This is the ground for the internal logic. Tie to the ground plane.
11
V
–
Negative Supply
Tie V
– to most negative potential in the circuit (Ground in single supply applications).
12
AGND
Analog Ground
AGND should be tied directly to the analog ground plane.
13, 14 REF
–, REF+ Ref. Inputs
The reference inputs must be kept free of noise with respect to AGND. The A/D sees a reference voltage equal
to the difference between REF
+ and REF–.
15
DIN
Data Input
The A/D configuration word is shifted into this input.
16
DOUT
Digital Data Output The A/D conversion result is shifted out of this output.
17
CS
Chip Select Input
A logic low on this input enables data transfer.
18
CLK
Clock
This clock synchronizes the serial data transfer and controls A/D conversion rate.
19
SSO
System Shutdown
System Shutdown Output pin will go low when power shutdown is requested.
Output
20
VCC
Positive Supply
This supply must be kept free of noise and ripple by bypassing directly to the analog ground plane.
LTC1296
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