Datasheet > LTC2345-18

LTC2345-18

更新时间： 2023-12-20 18:46:10

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
40页	1881K
描述
具宽输入共模范围的 8 通道、18 位、200ksps、差分 SoftSpan ADC

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LTC2345-18 数据手册

LTC2345-18

reFerence buFFer characTerisTics

The l denotes the specifications which apply over the full

operating temperature rangeꢄ otherwise specifications are at T_A= 2±°Cꢆ ꢂIote 8ꢈ

SY(ꢀO5

PAVA(ETEV

COIDꢁTꢁOIS

(ꢁI

4.ꢀ01

2.5

TYP

(AX

4.1ꢀ1

UIꢁTS

Reference Buffer Output Voltage REFIN Overdriven, V

= 2.ꢀ48V

REFIN

4.ꢀ09

REFBUF

REFBUF Voltage Range

REFBUF Input Impedance

REFBUF Load Current

REFBUF Overdriven (Notes 9, 14)

REFIN

= ꢀV, Buffer Disabled

kΩ

= 5V, 8 Channels Enabled (Notes 14, 15)

= 5V, Acquisition Mode (Note 14)

1.5

ꢀ.30

1.0

REFBUF

DigiTal inpuTs anD DigiTal ouTpuTs ^Thel denotes the specifications which apply over the

full operating temperature rangeꢄ otherwise specifications are at T_A= 2±°Cꢆ ꢂIote 8ꢈ

SY(ꢀO5

PAVA(ETEV

COIDꢁTꢁOIS

(ꢁI

0.8 • OV

–1ꢀ

TYP

(AX

UIꢁTS

C(OS Digital ꢁnputs and Outputs

High Level Input Voltage

Low Level Input Voltage

Digital Input Current

0.2 • OV

= ꢀV to OV

1ꢀ

μA

Digital Input Capacitance

High Level Output Voltage

Low Level Output Voltage

Hi-Z Output Leakage Current

Output Source Current

Output Sink Current

= –5ꢀꢀμA

= 5ꢀꢀμA

OV – ꢀ.2

OUT

ꢀ.2

1ꢀ

OUT

= ꢀV to OV

= ꢀV

–1ꢀ

μA

–5ꢀ

5ꢀ

SOURCE

SINK

= OV

59DS Digital ꢁnputs and Outputs

Differential Input Voltage

2ꢀꢀ

8ꢀ

35ꢀ

9ꢀꢀ

13ꢀ

On-Chip Input Termination

Resistance

CS = ꢀV, V

= 1.2V

1ꢀ9

1ꢀ

MΩ

ICM

CS = OV

Common-Mode Input Voltage

Common-Mode Input Current

Differential Output Voltage

ꢀ.3

–1ꢀ

275

1.1

1.2

2.2

1ꢀ

μA

ICM

V + = V – = ꢀV to OV

IN IN DD

ICM

R = 1ꢀꢀΩ Differential Termination

35ꢀ

1.2

425

1.3

1ꢀ

Common-Mode Output Voltage

Hi-Z Output Leakage Current

R = 1ꢀꢀΩ Differential Termination

OCM

OUT

= ꢀV to OV

–1ꢀ

μA

234518f

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