DS4404 데이터 시트보기 (PDF) - Maxim Integrated
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DS4404 Datasheet PDF : 9 Pages
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Two/Four-Channel, I2C Adjustable Current DAC
Pin Description
PIN
DS4404 DS4402
1
1
2
2
3
3
4
—
5
—
6
6
7
7
8
8
10
10
12
—
14
—
9, 11
9, 11
13
13
—
4, 5, 12, 14
—
—
NAME
SDA
SCL
GND
FS3
FS2
FS1
FS0
OUT0
OUT1
OUT2
OUT3
A0, A1
VCC
N.C.
EP
FUNCTION
I2C Serial Data. Input/output for I2C data.
I2C Serial Clock. Input for I2C clock.
Ground
Full-Scale Calibration Input. A resistor to ground on these pins determines the full-scale
current for each output. FS0 controls OUT0, FS1 controls OUT1, etc. (DS4402 has only
two inputs: FS0 and FS1.)
Current Output. Sinks or sources the current determined by the I2C interface and the
resistance connected to FSx. (DS4402 has only two outputs: OUT0 and OUT1.)
Address Select Inputs. Tri-level inputs (VCC, GND, N.C.) determine the I2C slave address.
See the Detailed Description section for the nine available device addresses.
Power Supply
No Connection
Exposed Pad. Leave unconnected or connect to GND.
SDA SCL A1 A0
VCC
VCC
F8h
SOURCE OR
SINK MODE
GND
CURRENT
DAC0
I2C-COMPATIBLE
SERIAL INTERFACE
F9h
31-POSITIONS
EACH FOR SINK
AND SOURCE
MODE
CURRENT
DAC1
FS0
RFS0
OUT0
FS1
RFS1
OUT1
Figure 1. Functional Diagram
FAh
CURRENT
DAC2
FS2
RFS2
OUT2
DS4402/DS4404
FBh
CURRENT
DAC3
FS3
OUT3
RFS3
DS4404
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