PDF《低功耗、可选增益差分ADC 驱动器,G = 1、2、3》

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8 of

28 1 +INB

2 +INA

3 CINA

4 CINB

11 COUT

12 PD

10 +OUT

9 VOCM

5 V + S

6 V + S

7 V + S

8 V + S

5 1 V C S

6 1 V C S

4 1 V C S

3 1 V C S ADA4950-1 TOP VIEW (Not to Scale) PIN

1 INDICATOR 07957-005 NOTES 1. SOLDER THE EXPOSED PADDLE ON THE BACK OF THE PACKAGE TO A GROUND PLANE OR TO A POWER PLANE. PIN

1 INDICATOR

1 2

3 4

5 6

15 16

17 18

14 13

7 8

9 1

1 2

1 0

1 1

2 2

2 3

2 4

2 A N I +

1 0

2 9

1 TOP VIEW (Not to Scale) ADA4950-2 CINA1 CINB1 +VS1 +VS1 +INB2 +INA2 CVS2 CVS2 VOCM1 +OUT1 PD2 COUT2

2 A N I C

2 B N I C V +

2 S V

2 M C O

2 T U O + V +

2 S V C

1 S V C

1 S

1 B N I +

1 D P

1 T U O C 07957-006 NOTES 1. SOLDER THE EXPOSED PADDLE ON THE BACK OF THE PACKAGE TO A GROUND PLANE OR TO A POWER PLANE. 表9. ADA4950-1引脚功能描述 引脚编号 引脚名称 描述

1 +INB

2 +INA

3 ?INA

4 ?INB

5 to

8 +VS

9 VOCM

10 +OUT

11 ?OUT

12 PD

13 to

16 ?VS

17 (EPAD) 裸露焊盘(EPAD) 表10. ADA4950-2引脚功能描述 引脚编号 引脚名称 描述

1 ?INA1

2 ?INB1 3,

4 +VS1

5 +INB2

6 +INA2

7 ?INA2

8 ?INB2 9,

10 +VS2

11 VOCM2

12 +OUT2

13 ?OUT2

14 PD2 15,

16 ?VS2

17 VOCM1

18 +OUT1

19 ?OUT1

20 PD1 21,

22 ?VS1

23 +INB1

24 +INA1

25 (EPAD) 裸露焊盘(EPAD) ADA4950-1/ADA4950-2 引脚配置和功能描述 图5. ADA4950-1引脚配置 图6. ADA4950-2引脚配置 正输入B,250 Ω输入.G = 2时单独使用,G = 3时连至+IN........