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DS4412UT Datasheet

Download or read online Maxim Integrated DS4412UT Dual-Channel, I2C Adjustable Sink/Source Current DAC pdf datasheet.



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Rev 0; 9/07
General Description
2
The DS4412 contains two I
C adjustable-current DACs
that are each capable of sinking or sourcing current. Each
output has 15 sink and 15 source settings that are pro-
2
grammed by I
C interface. The full-scale range and step
size of each output is determined by an external resistor
that can adjust the output current over a 4:1 range.
The output pins, OUT0 and OUT1, power-up in a high-
impedance state.
Power-Supply Adjustment
Power-Supply Margining
Adjustable Current Sink or Source
Pin Configuration
TOP VIEW
+
1
SDA
SCL
2
DS4412
FS1
3
GND
4
μSOP
4.7kΩ
4.7kΩ
V
CC
SDA
SCL
DS4412
GND
FS0
R
FS0
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Dual-Channel, I
Sink/Source Current DAC
♦ Two Current DACs
♦ Full-Scale Current 500µA to 2mA
♦ Full-Scale Range for Each DAC Determined by
External Resistors
♦ 15 Settings Each for Sink and Source Modes
♦ I
2
C-Compatible Serial Interface
♦ Low Cost
♦ Small Package (8-Pin µSOP)
Applications
♦ -40°C to +85°C Temperature Range
♦ 2.7V to 5.5V Operation
PART
DS4412U+
DS4412U+T&R
+ Denotes a lead-free package.
8
V
CC
T&R = Tape and reel.
7
OUT1
6
OUT0
5
FS0
V
V
CC
OUT
DC-DC
CONVERTER
FB
OUT0
OUT1
FS1
R
FS1
2
C Adjustable
Features
Ordering Information
TEMP RANGE
PIN-PACKAGE
-40°C to +85°C
8 μSOP
-40°C to +85°C
8 μSOP
Typical Operating Circuit
OUT0
V
OUT1
OUT
DC-DC
R
R
0A
1A
CONVERTER
FB
R
R
0B
1B
1

Summary of Contents

Page 1

... SDA SCL DS4412 GND FS0 R FS0 ___ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. Dual-Channel, I Sink/Source Current DAC Two Current DACs Full-Scale Current 500µA to 2mA ♦ ...

Page 2

Dual-Channel, I Sink/Source Current DAC ABSOLUTE MAXIMUM RATINGS Voltage Range SDA, and SCL CC Relative to Ground...-0.5V to 6.0V Voltage Range on OUT0, OUT1 Relative to Ground ...-0. 0.5V) (Not to exceed 6.0V.) CC ...

Page 3

OUTPUT CURRENT CHARACTERISTICS (continued 2.7V to 5.5V -40°C to 85°C.) CC PARAMETER SYMBOL Output-Current Variation due to Output Voltage Change Output Leakage Current at Zero Current Setting Output-Current Differential Linearity Output-Current Integral Linearity 2 I ...

Page 4

Dual-Channel, I Sink/Source Current DAC NAME PIN 2 SDA Serial Data. Input/output for I 2 SCL Serial Clock. Input for I FS1 3 Full-Scale Calibration Inputs. A resistor to ground on these pins determines ...

Page 5

OUT0 and OUT1 2.7V to 5.0V, SDA SCL V CC otherwise noted.) INTEGRAL LINEARITY 1.0000 RANGE FOR THE 0.5mA TO 2.0mA 0.7500 CURRENT SOURCE AND SINK RANGE 0.5000 0.2500 0.0000 -0.2500 -0.5000 -0.7500 -1.0000 ...

Page 6

Dual-Channel, I Sink/Source Current DAC Detailed Description 2 The DS4412 contains two I C adjustable-current sources that are each capable of sinking and sourcing current. Each output, OUT0 and OUT1, has 15 sink and 15 source settings that are programmed ...

Page 7

I C Serial Interface Description 2 I The DS4412s slave address is 90h. The following terminology is commonly used to describe data transfers: Master Device: The master device controls the slave devices on the bus. The ...

Page 8

Dual-Channel, I Sink/Source Current DAC 2 TYPICAL I C WRITE TRANSACTION MSB LSB START R/W READ/ SLAVE WRITE ADDRESS 2 EXAMPLE I C TRANSACTIONS 90h A) SINGLE BYTE WRITE SLAVE ...

Page 9

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ___ 9 © 2007 Maxim Integrated Products ...

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