DFBM-CA2 20

Data Sheet

Feb 24, 2005

Proprietary Information and Specifications are Subject to Change

Application Circuit

R4

220K 1%

R5

150K 1%

R11

10k

C12

10u

S1

TALK SW

S3

VOL+ SW

S2

VOL-SW

1.8V

D1

B-LED

D2

R-LED

R7

47K

R8

47K

R6

2K2

R1

10K

C10

2U2

C8

47N

C7

47N

C9

15P

C4

100N

C1

10UF

C5

TBD

1

2

J5

SPEAK

1

2

J4

MIC

J2

3.7V BATTERY

J1

DC5V JACK

STATUS

3

EN

6

GND

5

VSEN

9

VIN

1

V2P8

7

FAULT

2

TIME

4

IREF

8

VBAT

10

U1

ISL6292

C3

1UF

R2

0R

Q2

BC847BW

Q3

BC847BW

R12

300R

R13

680R

C2

10NF

R3

5K

Q1

BC847BW

1.8V

VIN

1

GND

2

CE/

3

LX

5

VOUT

4

U2

XC9216

L3

10u

C13

10u

1.8V

L2

2.2nH

VDD_1.8V

10

VDD_3.15V

11

USB_DP

12

USB_DN

13

GND

14

UART_RTS

15

UART_TX

18

PIO_11

28

PIO_9

29

PIO_5

30

PIO_4

31

GND

32

UART_CTS

16

UART_RX

17

PIO_3

33

PIO_2

34

PIO_1

35

PIO_0

36

U3

DFBM-CA220/CA221

VIN

1

GND

2

CE/

3

VOUT

5

NC

4

U4

XC6209

3.7V BATTERY

C11

10N

E?

ANTENNA

C6

1pF

Q4

BC847BW

C14

2.2uF

R14

100K

3.7V Battery

R15

10K

R16

10K

D3

BAT54W

3.7V Battery