Rainbow Electronics MAX5811 User Manual

General Description

The MAX5811 is a single, 10-bit voltage-output digital-to­analog converter (DAC) with an I2C™-compatible 2-wire
interface that operates at clock rates up to 400kHz. The
device operates from a single 2.7V to 5.5V supply and
draws only 100µA at VDD= 3.6V. A low-power power­down mode decreases current consumption to less than
1µA. The MAX5811 features three software-selectable
power-down output impedances: 100kΩ, 1kΩ, and high
impedance. Other features include an internal precision
Rail-to-Rail®output buffer and a power-on reset (POR)
circuit that powers up the DAC in the 100kΩ power-down
mode.

The MAX5811 features a double-buffered I2C-compatible
serial interface that allows multiple devices to share a sin­gle bus. All logic inputs are CMOS-logic compatible and
buffered with Schmitt triggers, allowing direct interfacing
to optocoupled and transformer-isolated interfaces. The
MAX5811 minimizes digital noise feedthrough by discon­necting the clock (SCL) signal from the rest of the device
when an address mismatch is detected.

The MAX5811 is specified over the extended temperature
range of -40°C to +85°C and is available in a space-sav­ing 6-pin SOT23 package. Refer to the MAX5812 data
sheet for the 12-bit version.

Applications

Digital Gain and Offset Adjustments
Programmable Voltage and Current Sources
Programmable Attenuation
VCO/Varactor Diode Control
Low-Cost Instrumentation
Battery-Operated Equipment

Features

♦ Ultra-Low Supply Current

100µA at V

DD

= 3.6V

130µA at VDD= 5.5V

♦ 300nA Low-Power Power-Down Mode

♦ Single 2.7V to 5.5V Supply Voltage

♦ Fast 400kHz I

2

C-Compatible 2-Wire Serial

Interface

♦ Schmitt-Trigger Inputs for Direct Interfacing

to Optocouplers

♦ Rail-to-Rail Output Buffer Amplifier

♦ Three Software-Selectable Power-Down Output

Impedances

100kΩ, 1kΩ, and High Impedance

♦ Read-Back Mode for Bus and Data Checking

♦ Power-On Reset to Zero

♦ Miniature 6-Pin SOT23 Package

MAX5811

10-Bit, Low-Power, 2-Wire Interface, Serial,

Voltage-Output DAC

________________________________________________________________ Maxim Integrated Products 1

Pin Configuration

Ordering Information

Typical Operating Circuit

19-2270; Rev 0; 1/02

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Functional Diagram appears at end of data sheet.

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
I

2

C is a trademark of Philips Corp.

PART TEMP RANGE

MAX5811LEUT-T -40°C to +85°C 6 SOT23-6 AAYS

MAX5811MEUT-T -40°C to +85°C 6 SOT23-6 AAYU

MAX5811NEUT-T -40°C to +85°C 6 SOT23-6 AAYW

MAX5811PEUT-T -40°C to +85°C 6 SOT23-6 AAYY

PIN­PACKAGE

TOP

MARK

V

DD

µC

SCL

SDA

R

R

P

P

R

S

SCL

R

S

SDA

R

S

SCL

R

S

SDA

MAX5811

MAX5811

V

OUT

V

OUT

DD

DD

V

DD

TOP VIEW

1

V

DD

2

GND

3

SDA

6

OUT

ADD

MAX5811

SOT23

5

SCL

4

MAX5811

10-Bit Low Power 2-Wire Interface Serial,
Voltage-Output DAC

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VDD= +2.7V to +5.5V, GND = 0, RL= 5kΩ, CL= 200pF, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at

V

DD

= +5V, TA= +25°C.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

VDD, SCL, SDA to GND............................................-0.3V to +6V

OUT, ADD to GND........................................-0.3V to V

DD

+ 0.3V

Maximum Current into Any Pin............................................50mA

Continuous Power Dissipation (T

A

= +70°C)

6-Pin SOT23 (derate 9.1mW above +70°C).................727mW

Operating Temperature Range ...........................-40°C to +85°C

Maximum Junction Temperature .....................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

STATIC ACCURACY (Note 2)

Resolution N 10 Bits

Integral Nonlinearity INL (Note 3) ±0.5 ±4 LSB

Differential Nonlinearity DNL Guaranteed monotonic (Note 3) ±0.5 LSB

Zero-Code Error ZCE Code = 000 hex, VDD = 2.7V ±6 ±40 mV

Zero-Code Error Tempco 2.3 ppm/°C

Gain Error GE Code = 3FF hex -0.8 -3 %FS

Gain-Error Tempco 0.26 ppm/°C

DAC OUTPUT

Output Voltage Range No load (Note 4) 0 V

DC Output Impedance Code = 200 hex 1.2 Ω

Short-Circuit Current

Wake-Up Time

DAC Output Leakage Current

DIGITAL INPUTS (SCL, SDA)

Input High Voltage V

Input Low Voltage V

Input Hysteresis

Input Leakage Current Digital inputs = 0 or V

Input Capacitance 6pF

DIGITAL OUTPUT (SDA)

Output Logic Low Voltage V

Three-State Leakage Current I

Three-State Output Capacitance 6pF

VDD = 5V, V

V

= 3V, V

DD

VDD = 5V 8

V

= 3V 8

DD

Power-down mode = high impedance,

= 5.5V, V

V

DD

IH

IL

I

OL

L

= 3mA 0.4 V

SINK

Digital inputs = 0 or V

= full scale (short to GND) 42.2

OUT

= full scale (short to GND) 15.1

OUT

= VDD or GND

OUT

DD

DD

±0.1 ±1 µA

0.7 x
V

DD

0.05 x
V

DD

±0.1 ±1µA

±0.1 ±1µA

DD

0.3 x
V

DD

V

mA

µs

V

V

V

MAX5811

10-Bit Low Power 2-Wire Interface Serial,

Voltage-Output DAC

_______________________________________________________________________________________ 3

Note 1: All devices are 100% production tested at TA= +25°C and are guaranteed by design for TA= T

MIN

to T

MAX

.

Note 2: Static specifications are tested with the output unloaded.
Note 3: Linearity is guaranteed from codes 29 to 995.
Note 4: Offset and gain error limit the FSR.
Note 5: Guaranteed by design. Not production tested.

ELECTRICAL CHARACTERISTICS (continued)

(VDD= +2.7V to +5.5V, GND = 0, RL= 5kΩ, CL= 200pF, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at

V

DD

= +5V, TA= +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DYNAMIC PERFORMANCE

Voltage-Output Slew Rate SR 0.5 V/µs

Voltage-Output Settling Time

Digital Feedthrough Code = 000 hex, digital inputs from 0 to V

Digital-to-Analog Glitch Impulse

POWER SUPPLIES

Supply Voltage Range V

Supply Current with
No Load

Power-Down Supply Current All digital inputs at 0 or V

TIMING CHARACTERISTICS (Figure 1)

Serial Clock Frequency f

Bus-Free Time Between STOP
and START Conditions

START Condition Hold Time t

SCL Pulse Width Low t

SCL Pulse Width High t

Repeated START Setup Time t

Data Hold Time t

Data Setup Time t

SDA and SCL Receiving
Rise Time

SDA and SCL Receiving
Fall Time

SDA Transmitting Fall Time t

STOP Condition Setup Time t

Bus Capacitance C

Maximum Duration of
Suppressed Pulse Widths

SCL

t

BUF

HD,STA

LOW

HIGH

SU,STA

HD,DAT

SU,DAT

SU,STO

t

To 1/2LSB code 100 hex to 300 hex or 300
hex to 100 hex (Note 5)

Major-carry transition (code = 1FF hex to 200
hex and 200 hex to 1FF hex)

DD

All digital inputs at 0 or VDD = 3.6V 100 170

All digital inputs at 0 or V

(Note 5) 0 300 ns

t

r

(Note 5) 0 300 ns

t

f

(Note 5)

f

(Note 5) 400 pF

b

SP

DD

DD

412µs

DD

2.7 5.5 V

= 5.5V 130 190

= 5.5V 0.3 1 µA

0 400 kHz

1.3 µs

0.6 µs

1.3 µs

0.6 µs

0.6 µs

0 0.9 µs

100 ns

20 +

0.1C

0.6 µs

050ns

0.2 nV-s

12 nV-s

b

250 ns

MAX5811

10-Bit Low Power 2-Wire Interface Serial,
Voltage-Output DAC

4 _______________________________________________________________________________________

Typical Operating Characteristics

(VDD= +5V, RL= 5kΩ, TA= +25°C.)

INTEGRAL NONLINEARITY

vs. INPUT CODE

1.00

0.75

0.50

0.25

0

-0.25

-0.50

INTEGRAL NONLINEARITY (LSB)

-0.75

-1.00
0 256 512 768 1024

INPUT CODE

DIFFERENTIAL NONLINEARITY

vs. INPUT CODE

1.00

0.75

0.50

0.25

0

-0.25

-0.50

DIFFERENTIAL NONLINEARITY (LSB)

-0.75

-1.00
0 256 512 768 1024

INPUT CODE

ZERO-CODE ERROR

vs. SUPPLY VOLTAGE

10

1.25

MAX5811 toc01

1.00

0.75

0.50

INTEGRAL NONLINEARITY (LSB)

0.25

0

0

MAX5811 toc04

-0.1

-0.2

-0.3

-0.4

DIFFERENTIAL NONLINEARITY (LSB)

-0.5

10

INTEGRAL NONLINEARITY

vs. SUPPLY VOLTAGE

2.7 4.13.4 4.8 5.5
SUPPLY VOLTAGE (V)

DIFFERENTIAL NONLINEARITY

vs. SUPPLY VOLTAGE

2.7 4.13.4 4.8 5.5
SUPPLY VOLTAGE (V)

ZERO-CODE ERROR

vs. TEMPERATURE

1.25

MAX5811 toc02

1.00

0.75

0.50

INTEGRAL NONLINEARITY (LSB)

0.25

0

-40 10-15 35 60 85

DIFFERENTIAL NONLINEARITY

0

MAX5811 toc05

-0.1

-0.2

-0.3

-0.4

DIFFERENTIAL NONLINEARITY (LSB)

-0.5

-40 10-15 35 60 85

-2.0

INTEGRAL NONLINEARITY

vs. TEMPERATURE

vs. TEMPERATURE

vs. SUPPLY VOLTAGE

MAX5811 toc03

TEMPERATURE (°C)

MAX5811 toc06

TEMPERATURE (°C)

GAIN ERROR

8

6

4

ZERO-CODE ERROR (mV)

2

NO LOAD

0

2.7 4.13.4 4.8 5.5
SUPPLY VOLTAGE (V)

MAX8511 toc07

ZERO-CODE ERROR (mV)

8

6

4

2

NO LOAD

0

-40 10-15 35 60 85
TEMPERATURE (°C)

MAX5811 toc08

GAIN ERROR (%FSR)

-1.6

-1.2

-0.8

-0.4

0

2.7 4.13.4 4.8 5.5
SUPPLY VOLTAGE (V)

MAX5811 toc09

NO LOAD