US5587 [UPI]

Low-Power, 8-bit Analog to Digital Converters;


型号：	US5587
厂家：	uPI Semiconductor Corp.
描述：	Low-Power, 8-bit Analog to Digital Converters
文件：	总9页 (文件大小：245K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

uS5587

Low-Power, 8-bit Analog to Digital Converters

Features

General Description

The uS5587 is a set of precision analog-to-digital converters TDFN2x1.5-10L Package 2mmx1.5mmx0.6mm

(ADCs) with 8 bits of resolution offered in a TDFN2x1.5-

10L package.

Supply Range: 2.8V to 3.6V

Power Consumption

The uS5587 is designed with precision, low power, and

ease of implementation in mind.Data are transferred via an

I²C-compatible serial interface.

Continuous Mode: 150uA

Stand-by Mode: <1uA

EN Pin: Internal Pull Down 700kΩ

VIH: 1.8V

The uS5587 operates from a single power supply ranging

from 2.8V to 3.6V

VIL: 0.4V

Ordering Information

Internal Reference Voltage: 1.2V

I²C Interface

Order Number

uS5587ADLA

Package

Top Marking

TDFN2x1.5-10L

Fixed Address: 0x70

VIH: 1.4V

address: 0x70

address: 0x72 (TBD)

Remark

VIL: 0.4V

Note:

Applications

(1) Please check the sample/product availability with uPI

representatives.

Temperature Measurement

Portable Instrumentation

(2) uPI products are compatible with the current IPC/JEDEC

J-STD-020 requirements. They are halogen-free, RoHS Consumer Goods

compliant and 100% matte tin (Sn) plating that are suitable

for use in SnPb or Pb-free soldering processes.

Pin Configuration & Typical Application Circuit

SCL

OFF

3.3V

SDA

SCL

VDD

SDA

VDD

330K

VIN=

VIN

AIN1

AIN2

AIN3

0.75V

1.25V

1.75V

2.25V

GND

AIN2

AIN3

GND

AIN1

uS5587-DS-F0000, May 2016

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uS5587

Functional Block Diagram

VDD

AIN1

AIN2

AIN3

POR

Reference

Timing

control

Control

Logic

GND

8bit A/D

Converter

I2C Interface

SCL SDA

Functional Pin Description

No.

Pin Name Pin Function

Not Internally Connected.

Signal and Power Ground for the IC. All voltage levels are measured with respect to this

pin. Tie this pin to the ground island/plane through the lowest impedance connection available.

GND

Analog Voltage Input 2. The channel 2 voltage input pin.

Analog Voltage Input 1. The channel 1 voltage input pin.

Analog Voltage Input 3. The channel 3 voltage input pin.

AIN2

AIN1

AIN3

Enable Input. Pulling this pin below 0.4V turns the regulator off and reduces the quiescent

current. Pull this pin higher than 1.8V for normal operation. The resistance is Internally pulled

down from 700KΩ to GND. I2C will be none-ACK when the EN drops below 0.4V.

Supply Input for the IC. Connect this pin to a 2.8V to3.6V power supply and decouple using

a 0.1uF ceramic capacitor.

VDD

Data for I²C Interface. Connect SDA to the data signal for the I²C bus.

Clock for I²C Interface. Connect SCL to the clock signal for the I²C bus.

SDA

SCL

uS5587-DS-F0000, May 2016

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uS5587

Functional Description

Supply Inputs and POR

I²C Start and Stop Conditions

The uS5578 works with supply inputs: VDDfor other control ASTART(S) condition is a HIGH to LOW transition of SDA

circuits. Inputs are continuously monitored for power on while SCL is HIGH. The STOP(P) condition is a LOW to

reset (POR). The POR threshold level is typically 2.5V for HIGH transition of SDA while SCL is HIGH. A STOP

VDDrising.

condition must be sent before each START condition.

I²C Interface Data Validity

The data on the SDA line must be stable during the HIGH

period of the SCL, unless generating a START or STOP

condition. The HIGH or LOW state of the data line can

only change when the clock signal on the SCLline is LOW.

SDA

SCL

start

stop

condition

SDA

SCL

I²C Acknowledge

Each address and data transmission uses 9 clock pulses.

The ninth pulse is the acknowledge bit(A). After the start

condition, the master sends 7 slave address bits and a R/

W bit during the next 8 clock pulses. During the ninth clock

pulse, the device that recognizes its own address pulls

SDAlow to acknowledge. The acknowledge bit is also used

by both the master and the slave to acknowledge receipt of

SDA stable

Data Valid

Change of

SDA allowed

Read and Write Protocol

Write to a Single Register

slave_addr

(W)

reg_addr (index)

[I7 : I0]

reg_data

[D7 : D0]

[A7 : A1]

Read from a Single Register

slave_addr

[A7 : A1]

(W)

reg_addr (index)

[I7 : I0]

slave_addr + R

[A7 : A1]

(R)

reg_data1

[D7 : D0]

AS RS

S = Start, P = Stop, AS = ACK from slave, AS = ACK from slave, NA = No ACK, RS = Repeat Start

I²C Address Programming

Voltage Monitoring

TheAIN1,AIN2 andAIN3 pin voltages are directly digitalized

byA/Dconverters and interfaced with microprocessors by

I2C bus.

When the VDD=2.8V to 3.6V, the A/D converters have

resolution of 4.6875mV and full scale from 0V to 1.2V.

TheA/Dsensed the voltage byAIN1,AIN2 andAIN3 in turn

every cycle, and the cycle repeat about every 1.2 mSec.

TheA/Dconverter outputs for output and input voltages are

stored in Reg0x03, Reg0x04 and Reg0x05 respectively.

The 0111_000X addresses could be strapped during

power on period. The X indicates that the next action is

data read (X = 1) from slave or data write (X = 0) to slave

till transaction stop.

8 bit Address Format

(X=0:Write/X=1:Read)

0111_000X

(70h/71h)

0111_000

(38h)

7 bit Address Format

I2C Programming Interface

The uS5587 owns a 8-bitsA/Dconverter that it can

provide a high resolution on the voltage sensing that are

programmed by Reg0x03, Reg0x04 and Reg0x05

respectively.

uS5587-DS-F0000, May 2016

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uS5587

Functional Description

Parameter

Symbol Register

AIN1 A/D Data Store

AIN2 A/D Data Store

AIN3 A/D Data Store

TD1

TD2

TD3

Reg0x03[7](MSB) - Reg0x03[0](LSB)

Reg0x04[7](MSB) - Reg0x04[0](LSB)

Reg0x05[7](MSB) - Reg0x05[0](LSB)

Hex

Data

Reg_addr

0x00

Bit7

Bit6

Bit5

Bit4

Reserved

Bit3

Bit2

Bit1

Bit0

0x01

Reserved

0x02

0x03

TD1_Bit7

TD2_Bit7

TD3_Bit7

TD1_Bit6

TD2_Bit6

TD3_Bit6

TD1_Bit5

TD2_Bit5

TD3_Bit5

TD1_Bit4 TD1_Bit3

TD2_Bit4 TD2_Bit3

TD3_Bit4 TD3_Bit3

Reserved

TD1_Bit2

TD2_Bit2

TD3_Bit2

TD1_Bit1 TD1_Bit0

TD2_Bit1 TD2_Bit0

TD3_Bit1 TD3_Bit0

0x04

0x05

0x06

0xB2

Chip ID = 0x1D

Reg_addr Bit Value Register_Name

Function

Reserved

Description

0x00

0x01

0x02

ADC conversion code for AIN1 input

voltage

0x03

0x04

0x05

7:0

00h

TD1[7:0]

TD2[7:0]

TD3[7:0]

AIN1's ADC Conversion Code

AIN2's ADC Conversion Code

AIN3's ADC Conversion Code

ADC conversion code for AIN2 input

voltage

ADC conversion code for AIN3 input

voltage

0x06

0xB2

Reserved

3:0

1Dh

ChipID[7:0]

Read-only.

uS5587-DS-F0000, May 2016

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uS5587

Absolute Maximum Rating

Supply InputVoltageV_DD(Note 1) ---------------------------------------------------------------------------------------------------- -0.3V to +4V

Other Pins --------------------------------------------------------------------------------------------------------------------------------------- -0.3VtoVDD

StorageTemperature Range ------------------------------------------------------------------------------------------------------------- -65^oC to +150^oC

JunctionTemperature ------------------------------------------------------------------------------------------------------------------------------------ 150^oC

LeadTemperature (Soldering, 10 sec) ------------------------------------------------------------------------------------------------------------ 260^oC

ESD Rating (Note 2)

HBM (Human Body Mode) --------------------------------------------------------------------------------------------------------------------- 2kV

MM (Machine Mode) ----------------------------------------------------------------------------------------------------------------------------- 200V

Thermal Information

Package Thermal Resistance (Note 3)

TDFN2x1.5-10Lθ_JA---------------------------------------------------------------------------------------------------------------------- 115^oC/W

TDFN2x1.5-10Lθ_JC------------------------------------------------------------------------------------------------------------------------- 25^oC/W

Power Dissipation, P_D@ TA = 25°C

TDFN2x1.5-10L------------------------------------------------------------------------------------------------------------------------------------- 0.87W

Recommended Operation Conditions

Operating Junction Temperature Range (Note 4) ------------------------------------------------------------------------ -40°C to +125°C

OperatingAmbient Temperature Range -------------------------------------------------------------------------------------- -40°C to +85°C

Supply Input Voltage, V_DD------------------------------------------------------------------------------------------------------ +2.8V to +3.6V

Electrical Characteristics

(V_DD= 3.3V, T_A= 25^oC, unless otherwise specified)

Parameter

Symbol Test Conditions

Min

Typ

Max Unit

Supply Input Voltage

VDD Supply Input Voltage Range

VDD POR Threshold

VDD POR Hysteresis

Supply Input Current

Shutdown Current

V_DD

V_{DD_RTH}

V_{DD_HYS}

I_DD

2.8

2.4

2.5

0.16

150

3.6

2.6

I_{DD_SD}

EN < 0.4V

Voltage Monitoring (AIN1, AIN2, and AIN3)

A/D Resolution

4.6875

1LSB = 4.6875mV

1.2

A/D Full Scale Range

Differential Nonlinearity

Integral Nonlinearity

LSB

Input Bias Current

AIN1,AIN2 and AIN3 = 0 to VDD

Every AIN1, AIN2 and AIN3

monitor time in rotation

AIN1,AIN2,AIN3 Monitor Time

T_MT

1.2

uS5587-DS-F0000, May 2016

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uS5587

Electrical Characteristics

Parameter

Symbol Test Conditions

Min

Typ

Max Unit

Input Low Voltage

Input High Voltage

EN Pull Low Resistance

I2C Interface

V_IL

V_IH

1.8

0.4

Ω

700k

I2C Clock Rate Range

I2C Input Low Voltage

I2C Input High Voltage

SCL Clock Period

SDA Data Setup Time

SDA Data Hold Time

Start Setup Time

Stop Setup Time

f_I2C

V_{IL_I2C}

V_{IH_I2C}

t_SCL

400

0.4

kHz

1.4

2.5

t_SU

100

t_HD

0.9

t_ST

t_SP

For Start Condition

For Stop Condition

600

Note 1. Stresses beyond those listed as the above Absolute Maximum Ratings may cause permanent damage to

the device. These are for stress ratings only. Functional operation of the device at these or any other

conditions beyond those indicated in the Recommende Operation Condition section of the specifications is

not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility

to affect device reliability.

Note 2. Devices are ESDsensitive. Handling precaution recommended.

Note 3. θ_JAis measured in the natural convection at T_A= 25°C on a low effective thermal conductivity test board of

JEDEC 51-3 thermal measurement standard.

Note 4. The device is not guaranteed to function outside its operating conditions.

t_SCL

SCL

t_ST

t_SP

t_HD

t_SU

SDA

START

STOP

I2C Timing Table

uS5587-DS-F0000, May 2016

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uS5587

Typical Operation Characteristics

AIN1,AIN2,AIN3 vs. Input Voltage

Supply Input Current vs. VDD

240

230

220

210

200

190

180

170

160

150

140

130

120

110

100

288

256

224

192

160

128

AIN1

AIN2

AIN3

0.2

0.4

0.6

0.8

1.2

1.4

2.5

2.7

2.9

3.1

3.3

3.5

3.7

3.9

4.1

AINVoltage (V)

VDD= 3.3V

VDD(V)

VDD= 2.5V - 4.1V, EN = 1.8V

Input Supply Current vs. Temperature

Shutdown Current vs. Temperature

250

200

150

100

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

-40 -20

20 40 60 80 100 120 140

Temperature (^oC)

-40 -20

20 40 60 80 100 120 140

Temperature (^oC)

VDD= 3.3V

VDD= 3.3V, EN= 0V

Shutdown Current vs. VDD

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

2.5

2.7

2.9

3.1

3.3

3.5

3.7

3.9

4.1

VDD(V)

VDD = 2.6V - 4V, EN = 0V

uS5587-DS-F0000, May 2016

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uS5587

Package Information

TDFN2x1.5-10LPackage

0.30 - 0.50

1.90 - 2.10

0.15 - 0.30

0.25 - 0.45

0.50 BSC

0.20 - 0.30

2.35

1.50

0.50 - 0.60

0.63

0.15 REF

0.00 - 0.05

0.20 - 0.30

0.15 - 0.25

Recommended Solder Pad Layout

Note

1.Package Outline UnitDescription:

BSC: Basic. Represents theoretical exact dimension or dimension target

MIN: Minimum dimension specified.

MAX: Maximum dimension specified.

REF: Reference. Represents dimension for reference use only. This value is not a device specification.

TYP. Typical. Provided as a general value. This value is not a device specification.

2.Dimensions in Millimeters.

3.Drawing not to scale.

4.These dimensions no not include mold flash or protrusions. Mold flash or protrusions shell not exceed 0.15mm.

uS5587-DS-F0000, May 2016

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uS5587

Important Notice

uPI and its subsidiaries reserve the right to make corrections, modifications, enhancements, improvements, and other

changes to its products and services at any time and to discontinue any product or service without notice. Customers

should obtain the latest relevant information before placing orders and should verify that such information is current and

complete.

uPI products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment.

However, no responsibility is assumed by uPI or its subsidiaries for its use or application of any product or circuit; nor

for any infringements of patents or other rights of third parties which may result from its use or application, including but

not limited to any consequential or incidental damages. No uPI components are designed, intended or authorized for

use in military, aerospace, automotive applications nor in systems for surgical implantation or life-sustaining. No license

is granted by implication or otherwise under any patent or patent rights of uPI or its subsidiaries.

uS5587-DS-F0000, May 2016

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