MCP4725A0T-E/CH Microchip Technology, MCP4725A0T-E/CH Datasheet

IC DAC 12BIT W/I2C SOT23A-6

MCP4725A0T-E/CH

Manufacturer Part Number
MCP4725A0T-E/CH
Description
IC DAC 12BIT W/I2C SOT23A-6
Manufacturer
Microchip Technology
Datasheets

Specifications of MCP4725A0T-E/CH

Number Of Converters
1
Package / Case
SOT-23-6
Settling Time
6µs
Number Of Bits
12
Data Interface
I²C, Serial
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Resolution
12 bit
Interface Type
Serial (2-Wire, I2C)
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
MCP4725DM-PTPLS - BOARD DAUGHTER PICTAIL MCP4725
Power Dissipation (max)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
MCP4725A0T-E/CHTR
MCP4725AOT-E/CHTR
MCP4725AOT-E/CHTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MCP4725A0T-E/CH
Manufacturer:
Microchip Technology
Quantity:
41 378
Part Number:
MCP4725A0T-E/CH
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Part Number:
MCP4725A0T-E/CH
0
Features
• 12-Bit Resolution
• On-Board Non-Volatile Memory (EEPROM)
• ±0.2 LSB DNL (typical)
• External A0 Address Pin
• Normal or Power-Down Mode
• Fast Settling Time: 6 µs (typical)
• External Voltage Reference (V
• Rail-to-Rail Output
• Low Power Consumption
• Single-Supply Operation: 2.7V to 5.5V
• I
• Small 6-lead SOT-23 Package
• Extended Temperature Range: -40°C to +125°C
Applications
• Set Point or Offset Trimming
• Sensor Calibration
• Closed-Loop Servo Control
• Low Power Portable Instrumentation
• PC Peripherals
• Data Acquisition Systems
Block Diagram
© 2009 Microchip Technology Inc.
12-Bit Digital-to-Analog Converter with EEPROM Memory
- Eight Available Addresses
- Standard (100 kbps), Fast (400 kbps), and
V
V
2
C
DD
SS
High-Speed (3.4 Mbps) Modes
TM
Interface:
Power-on
EEPROM
Charge
Reset
Pump
A0
String DAC
Resistive
V
I
2
Amp
Op
OUT
C Interface Logic
DAC Register
DD
SCL
Register
)
Input
SDA
in SOT-23-6
DESCRIPTION
The MCP4725 is a low-power, high accuracy, single
channel, 12-bit buffered voltage output Digital-to-
Analog Convertor (DAC) with non-volatile memory
(EEPROM). Its on-board precision output amplifier
allows it to achieve rail-to-rail analog output swing.
The DAC input and configuration data can be
programmed to the non-volatile memory (EEPROM) by
the user using I
memory feature enables the DAC device to hold the
DAC input code during power-off time, and the DAC
output is available immediately after power-up. This
feature is very useful when the DAC device is used as
a supporting device for other devices in the network.
The device includes a Power-On-Reset (POR) circuit to
ensure reliable power-up and an on-board charge
pump for the EEPROM programming voltage. The
DAC reference is driven from V
down mode, the output amplifier can be configured to
present a known low, medium, or high resistance
output load.
The MCP4725 has an external A0 address bit selection
pin. This A0 pin can be tied to V
application board.
The MCP4725 has a two-wire I
interface for standard (100 kHz), fast (400 kHz), or high
speed (3.4 MHz) mode.
The MCP4725 is an ideal DAC device where design
simplicity and small footprint is desired, and for
applications requiring the DAC device settings to be
saved during power-off time.
The device is available in a small 6-pin SOT-23
package.
Package Type
SOT-23-6
V
V
V
OUT
SS
DD
MCP4725
2
C interface command. The non-volatile
1
2
3
MCP4725
DD
2
DD
C™ compatible serial
or V
directly. In power-
6
5
4
DS22039D-page 1
SS
A0
SCL
SDA
of the user’s

Related parts for MCP4725A0T-E/CH

MCP4725A0T-E/CH Summary of contents

Page 1

... Resistive String DAC Op Amp OUT © 2009 Microchip Technology Inc. MCP4725 in SOT-23-6 DESCRIPTION The MCP4725 is a low-power, high accuracy, single channel, 12-bit buffered voltage output Digital-to- Analog Convertor (DAC) with non-volatile memory (EEPROM). Its on-board precision output amplifier allows it to achieve rail-to-rail analog output swing. ...

Page 2

... MCP4725 NOTES: DS22039D-page 2 © 2009 Microchip Technology Inc. ...

Page 3

... Within 1/2 LSB of the final value when code changes from 1/4 to 3/4 (400h to C00h) of full scale range. 4: Logic state of external address selection pin (A0 pin). © 2009 Microchip Technology Inc. † Notice: Stresses above those listed under “Maximum ratings” may cause permanent damage to the device. This is ...

Page 4

... Normal mode ( OUT SS Power-Down Mode OUT SS Power-Down Mode OUT SS Power-Down Mode OUT SS Validation only. 1 LSB change around major carry (from 800h to 7FFh) (Note 2) Note Note 4 Note 4 SCL = SDA = SCL = SDA = Note 2 At +25°C, (Note 2) At +25°C, (Note 2) © 2009 Microchip Technology Inc. ...

Page 5

... TEMPERATURE CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, V Parameters Temperature Ranges Specified Temperature Range Operating Temperature Range Storage Temperature Range Thermal Package Resistances Thermal Resistance, 6L-SOT-23 © 2009 Microchip Technology Inc. = +2.7V to +5.5V Sym Min Typ Max Units T -40 — +125 °C ...

Page 6

... MCP4725 NOTES: DS22039D-page 6 © 2009 Microchip Technology Inc. ...

Page 7

... FIGURE 2-2: DNL vs. Code and Temperature (T = -40°C to +125°C). A 0.3 0.2 0.1 0.0 -0.1 0 1024 2048 3072 Code FIGURE 2-3: DNL vs. Code (V © 2009 Microchip Technology Inc. = +5.0V 0V kΩ 0.4 0.3 0.2 0.1 0.0 -0.1 0 3072 4096 = 5.5V). FIGURE 2-4: ...

Page 8

... FIGURE 2-10: Temperature (Code = 4000d). 450 400 350 300 250 200 150 100 50 0 -40 -25 -10 5 FIGURE 2-11 100 110 125 Temperature (°C) Output Error vs 2. 110 125 Temperature(°C) I vs. Temperature. DD © 2009 Microchip Technology Inc. ...

Page 9

... Current (µA) FIGURE 2-12: I Histogram . Current (µA) FIGURE 2-13: I Histogram. DD 2.50 2.00 5.5V 1.50 2.7V 1.00 0.50 0.00 -40 -25 - 110 125 Temperature (°C) FIGURE 2-14: Offset Error vs. Temperature and © 2009 Microchip Technology Inc. = +5.0V 0V kΩ FIGURE 2-15 2. Code = 000h 0 0 ...

Page 10

... OUT FIGURE 2-22: Code Change: 800h to 7FFh V OUT FIGURE 2-23 100 pF OUT (2V/Div) CLK Time (2 µs/Div) Half Scale Settling Time. V OUT (2V/Div) CLK Time (2 µs/Div) Half Scale Settling Time. V OUT (20 mV/Div) Time (1 µs/Div) Code Change Glitch. © 2009 Microchip Technology Inc. ...

Page 11

... Note: Unless otherwise indicated +25° CLK Time (2 µs/Div) FIGURE 2-24: Exiting Power Down Mode. © 2009 Microchip Technology Inc. = +5.0V 0V kΩ OUT (2V/Div) MCP4725 , C = 100 pF DS22039D-page 11 ...

Page 12

... MCP4725 NOTES:. DS22039D-page 12 © 2009 Microchip Technology Inc. ...

Page 13

... SDA pin can only change when the clock signal on the SCL pin is low. Refer to Section 7.0 “I Serial Interface Communication” for more details Serial Interface communication. © 2009 Microchip Technology Inc. Table 3-1. Description 2 C address bits should be. ...

Page 14

... MCP4725 NOTES: DS22039D-page 14 © 2009 Microchip Technology Inc. ...

Page 15

... EQUATION 4- – V OUT Ideal INL = -------------------------------------- - LSB Where Code*LSB Ideal V = The output voltage measured at OUT the given input code © 2009 Microchip Technology Inc Analog 4 Output INL = 0.5 LSB 3 (LSB 000 Zero Scale 1 in the DD is the ideal FIGURE 4-1: 4.4 Differential Nonlinearity (DNL) ...

Page 16

... OUT Ideal FSE = -------------------------------------- - LSB - REF OFFSET The reference voltage the MCP4725 REF DD Full Scale Error Gain Error Actual Transfer Function after Offset Error Removed Ideal Transfer Function DAC Input Code Gain Error and Full Scale o C. © 2009 Microchip Technology Inc. ...

Page 17

... MCP4725, the settling time is a measure of the time delay until the DAC output reaches its final value (within 0.5 LSB) when the DAC code changes from 400h to C00h. © 2009 Microchip Technology Inc. MCP4725 4.11 Major-Code Transition Glitch Major-code transition glitch is the impulse energy injected into the DAC analog output when the code in the DAC register changes state ...

Page 18

... MCP4725 NOTES: DS22039D-page 18 © 2009 Microchip Technology Inc. ...

Page 19

... The output amplifier can drive the resistive and high capacitive loads without oscillation. The amplifier can provide maximum load current as high which is enough for most of a programmable voltage reference applications. © 2009 Microchip Technology Inc. 5.1.2 DRIVING RESISTIVE AND CAPACITIVE LOADS The MCP4725 output stage is capable of driving loads memory up to 1000 pF in parallel with 5 kΩ ...

Page 20

... Resistive String DAC OP Amp Power-Down Control Circuit Resistive FIGURE 5-1: Output Stage for Power- Down Mode. is OUT Function (1) (1) (1) is off and OUT V OUT 1 kΩ 100 kΩ 500 kΩ Load © 2009 Microchip Technology Inc. ...

Page 21

... Function Type Note 1: Write EEPROM status indication bit (0:EEPROM write is not completed. 1:EEPROM write is complete.) © 2009 Microchip Technology Inc. are transferred to the EEPROM memory block. A status bit, RDY/BSY, stays low during the EEPROM writing and goes high as the write operation is completed ...

Page 22

... MCP4725 NOTES: DS22039D-page 22 © 2009 Microchip Technology Inc. ...

Page 23

... LSB DD 000000000010 (002h) 2 LSB 000000000001 (001h) 1 LSB 000000000000 (000h) 0 © 2009 Microchip Technology Inc. 6.1.1 WRITE COMMAND FOR FAST MODE ( bus line, the X = DON’T CARE) The fast write command is used to update the DAC register. The data in the EEPROM of the device is not affected by this command ...

Page 24

... Repeat bytes of 2nd and 3rd bytes 2nd byte 0 0 PD1 PD0 D11 D10 ACK (MCP4725) at the falling edge of the ACK pulse of the 3rd byte. Function see Note 2 ACK (MCP4725) 3rd byte STOP Bit STOP Bit 3rd byte ACK (MCP4725) see Note 2 © 2009 Microchip Technology Inc. ...

Page 25

... Note 1: RDY/BSY bit stays “low” during the EEPROM write. Any new write command including repeat bytes during the EEPROM write mode is ignored. The RDY/BSY bit sets to “high” after the EEPROM write is completed. FIGURE 6-2: Write Commands for DAC Input Register and EEPROM. © 2009 Microchip Technology Inc. ACK (MCP4725) 2nd byte 3rd byte X ...

Page 26

... POR PD1 PD0 X D11 D10 Current Settings DAC register Data (12 bits) in DAC Register See Note 2 5th byte X PD1 PD0 X D11 D10 D9 D8 EEPROM Data ACK (Master) 4th byte STOP ACK (Master) Bit 6th byte © 2009 Microchip Technology Inc. ...

Page 27

... START bit Figure 6-1 Slave Address Slave Address for MCP4725 Device Code 1 1 Note: A2 and A1: Programmed (hard-wired) at the factory. Please Contact Microchip Technology Inc. for A2 and A1 programming options. A0: Use the logic level state of A0 pin. FIGURE 7-1: MCP4725 can ...

Page 28

... HIGH period of the clock signal. The data on the line must be changed during the LOW period of the clock signal. There is one clock pulse per bit of data. Each data transfer is initiated with a START condition and terminated with a STOP condition 7-3. © 2009 Microchip Technology Inc. ...

Page 29

... CONDITION ACKNOWLEDGE FIGURE 7-3: Data Transfer Sequence On The Serial Bus. © 2009 Microchip Technology Inc. course, setup and hold times must be taken into account. During reads, a master must send an end of data to the slave by not generating an acknowledge bit on the last byte that has been clocked out of the slave. ...

Page 30

... Notes 2 and 3 ns Time between START and STOP conditions. kHz From (Note From (Note After this period, the first clock pulse is generated ns ns Note Notes 2 and 3 ns Time between START and STOP conditions HD:DAT ) or SU:DAT parameter. AA © 2009 Microchip Technology Inc. ...

Page 31

... For Data Input: This parameter must be longer than t Clock Low time (T ) can be affected. LOW For Data Output: This parameter is characterized, and tested indirectly by testing T 5: All timing parameters in high-speed modes are tested at V © 2009 Microchip Technology Inc. = -40 to +85° Min Typ Max 0 — ...

Page 32

... MCP4725 SCL SU:STA T LOW T SDA HD:STA FIGURE 7- Bus Timing Data. DS22039D-page 32 T HIGH T SU:DAT T HD:DAT SU:STO T BUF 0.7V DD 0.3V DD © 2009 Microchip Technology Inc. ...

Page 33

... FIGURE 8- Bus Interface Connection with A0 pin tied © 2009 Microchip Technology Inc. Two devices with the same A2 and A1 address bits can be connected to the same I address pin (Example: A0 pin of device A is tied to V and the other device’s pin is tied to V 8.1.1 ...

Page 34

... Example 8-1 shows an example of the set point setting. shows an Since the MCP4725 is a 12-bit DAC and uses the V supply as a reference source, it provides a V resolution per step. SS capacitors of the DD range of 2.7V to 5.5V. Its output DD DD /4096 of DD © 2009 Microchip Technology Inc. ...

Page 35

... R EXAMPLE 8-1: Set Point Or Threshold Calibration. © 2009 Microchip Technology Inc. output is scaled down by the factor of the ratio of the voltage divider. Note that the bypass capacitor on the output of the voltage divider plays a critical function in attenuating the output noise of the DAC and the induced noise from the environment ...

Page 36

... V SDA 4 DD 0.1 µF 10 µF V OUT Dn × ------- OUT Thevenin Equivalent trip EXAMPLE 8-2: Single-Supply “Window” DAC. DS22039D-page MCU (MASTER CC+ sense CC- Where DAC Input Code (0 – 4095 ------------------ - OUT ( ) ( ) CC ------------------------------------------------------ OUT -------------------------------------------- - CC+ Comparator V TRIP V CC- 0.1 µ © 2009 Microchip Technology Inc. ...

Page 37

... OUT DD V OUT V = ------------------- - IN ⎛ ⎝ O IN+ EXAMPLE 8-3: Digitally-Controlled Bipolar Voltage Source. © 2009 Microchip Technology Inc. Example 8-3 configuration. R while R and R 3 offset. Note that higher offset is desired. Note that a pull- could be used, instead desired MCU (MASTER ...

Page 38

... kΩ and kΩ, the gain will be 0. Next, solve for R and R by setting the DAC 4096, knowing that the output needs to be +2.05V. ⋅ 2.05V + 0 ----------------------- - = ------------------------------------------------ - ⋅ 1 kΩ, then kΩ DS22039D-page © 2009 Microchip Technology Inc. ...

Page 39

... DAC voltage output to a digitally selectable current source by adding a voltage follower and a sensor register. MCP4725 OUT SCL SDA 0.1 µF 10 µF V OUT R SENSE FIGURE 8-3: Digitally Controllable Current Source. © 2009 Microchip Technology Inc MCU (MASTER OUT LOAD MCP4725 Dn × ----------- - V DD ...

Page 40

... MCP4725 NOTES: DS22039D-page 40 © 2009 Microchip Technology Inc. ...

Page 41

... Evaluation & Demonstration Boards The MCP4725 SOT-23-6 Evaluation Board is available from Microchip Technology Inc. This board works with Microchip’s PICkit™ Serial Analyzer. The user can program the DAC input codes and EEPROM data, or read the programmed data using the easy to use PICkit Serial Analyzer with the Graphic User Interface software ...

Page 42

... MCP4725 NOTES: DS22039D-page 42 © 2009 Microchip Technology Inc. ...

Page 43

... PACKAGING INFORMATION 10.1 Package Marking Information 6-Lead SOT-23 Part Number MCP4725A0T-E/CH XXNN MCP4725A1T-E/CH MCP4725A2T-E/CH 1 MCP4725A3T-E/CH Legend: XX...X Customer-specific information Y Year code (last digit of calendar year) YY Year code (last 2 digits of calendar year) WW Week code (week of January 1 is week ‘01’) NNN ...

Page 44

... MCP4725 /HDG 3ODVWLF 6PDOO 2XWOLQH 7UDQVLVWRU &+ >627 1RWH 1RWHV DS22039D-page © 2009 Microchip Technology Inc. φ ...

Page 45

... Numerous edits throughout. 3. Add new package marking address options. Updated package marking information and package outline drawings. 4. Added adress options to Product Identification System page. Revision A (April 2007) • Original Release of this Document. © 2009 Microchip Technology Inc. and Ramp Rate on Product MCP4725 DS22039D-page 45 ...

Page 46

... MCP4725 NOTES: DS22039D-page 46 © 2009 Microchip Technology Inc. ...

Page 47

... External 1 External 0 External 1 External d) MCP4725 . MCP4725A0T-E/CH: Tape and Reel, Extended Temp., 6LD SOT-23 pkg. Address Option = A0 MCP4725A1T-E/CH: Tape and Reel, Extended Temp., 6LD SOT-23 pkg. Address Option = A1 MCP4725A2T-E/CH: Tape and Reel, Extended Temp., 6LD SOT-23 pkg. Address Option = A2 MCP4725A3T-E/CH: Tape and Reel, Extended Temp ...

Page 48

... MCP4725 NOTES: DS22039D-page 48 © 2009 Microchip Technology Inc. ...

Page 49

... PICDEM, PICDEM.net, PICtail, PIC Select Mode, Total Endurance, TSHARC, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 50

... Fax: 886-3-6578-370 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2009 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...

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