MAXIM MAX5109 Technical data

General Description

The MAX5109 dual 8-bit digital-to-analog converters (DACs) feature nonvolatile registers. These nonvolatile registers store the DAC operating modes and output states, allowing the DACs to initialize to specified configurations at power-up.

Precision on-chip output buffers swing rail-to-rail, and provide 8µs settling time. The I2C*-compatible, 2-wire serial interface allows for a maximum clock frequency of 400kHz.

The MAX5109 has independent high and low reference inputs allowing maximum output voltage range flexibility. The reference rails accept voltage inputs that range from ground to the positive supply rail.

This device operates from a single +2.7V to +5.25V supply and consumes 200µA per DAC. A software-controlled power-down mode decreases supply current to less than 25µA. A software-controlled mute mode sets each DAC, or both DACs simultaneously, to their respective REFL_ voltages. The MAX5109 also includes an asynchronous MUTE input, that drives both DAC outputs simultaneously to their respective REFL_ voltages.

The MAX5109 is available in a 16-pin QSOP and is specified for operation over the extended (-40°C to +85°C) temperature range.

Applications

Digital Gain and Offset Adjustments

Programmable Attenuators

Portable Instruments

Power-Amp Bias Control

ATE Calibration

Laser Biasing

Features

♦ Nonvolatile Registers Initialize DACs to Stored

States

♦ +2.7V to +5.25V Single-Supply Operation

♦ Dual 8-Bit DACs with Independent High and Low

Reference Inputs

♦ Rail-to-Rail Output Buffers

♦ Low 200µA per DAC Supply Current

♦ Power-Down Mode Reduces Supply Current to

25µA (max)

♦ 400kHz, I

C-Compatible, 2-Wire Serial Interface

♦ Asynchronous MUTE Input

♦ Small 16-Pin QSOP Package

MAX5109

Nonvolatile, Dual, 8-Bit DACs with 2-Wire Serial

Interface

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-3585; Rev 0; 2/05

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.

PART TEMP RANGE PIN-PACKAGE

-40°C to +85°C 16 QSOP

*Purchase of I2C components from Maxim Integrated Products, Inc., or one of its sublicensed Associate Companies, conveys a license under the Philips I

C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C

Standard Specification defined by Philips.

Pin Configuration and Typical Operating Circuit appear at end of data sheet.

DAC0

NONVOLATILE/

VOLATILE

REGISTERS

DAC1

NONVOLATILE/

VOLATILE

REGISTERS

REFL0

OUT0

OUT1

SCL

GND

SDA

2-WIRE SERIAL

INTERFACE/

CONTROL

MUTE

REFH0

REFL1

REFH1

MAX5109

DAC0

DAC1

Simplified Diagram

MAX5109EEE

MAX5109

Nonvolatile, Dual, 8-Bit DACs with 2-Wire Serial Interface

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

(All voltages referenced to GND, unless otherwise noted.) V

, A0, A1, A2, A3, SCL, SDA, MUTE.................-0.3V to +6.0V

OUT0, OUT1, REFH0, REFH1

REFL0, REFL1 .......................................-0.3V to (V

+ 0.3V)

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

Power Dissipation (T

= +70°C)

16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW

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

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

Storage Temperature Range .............................-60°C to +150°C

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

ELECTRICAL CHARACTERISTICS

(VDD= +2.7V to +5.25V, GND = 0, REFH_ = VDD, REFL_ = GND, R

LOAD

= 5kΩ, CL = 100pF, TA= -40°C to +85°C, unless otherwise

noted. Typical values are at V

= +3.0V and TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

STATIC ACCURACY

Resolution 8 Bits

Code range 0A hex to F0 hex ±1

Integral Nonlinearity INL

Full code range ±2

LSB

Code range 0A hex to F0 hex

Differential Nonlinearity (Note 2) DNL

Full code range ±1

LSB

Offset Error ZCE Code = 0A hex

Offset Temperature Coefficient Code = 0A hex

µV/°C

Gain Error Code = F0 hex (Note 3) ±1 LSB

Gain-Error Temperature Coefficient

Code = F0 hex

LSB/°C

Power-Supply Rejection Ratio PSRR

Code = FF hex or 0A hex, V

REFH_

= 2.5V,

REFL_

= 0, f = DC

LSB/V

REFERENCE INPUT (REFH_, REFL_)

Input Voltage Range

REFH_

REFL_

REFH_

≥ V

REFL_

Input Resistance

600 kΩ

Input-Resistance Temperature Coefficient

ppm/°C

Input Capacitance 10 pF

DAC OUTPUTS (OUT_)

Load Regulation Code = F0 hex, R

LOAD

≥ 5kΩ

±1 LSB

Output Leakage DAC powered down, not muted

µA

Amplifier Output Resistance 0.5V ≤ V

OUT_

≤ (VDD - 0.5V) 0.5 Ω

DIGITAL INPUTS (A_, MUTE)

2.7V ≤ VDD < 3.6V

0.7 x

Input High Voltage (Note 4) V

3.6V ≤ VDD ≤ 5.25V

SYMBOL

MIN TYP MAX

±0.5

320 460

2.52

±20

±0.002

±35

±0.5

±20

±10

MAX5109

Nonvolatile, Dual, 8-Bit DACs with 2-Wire Serial

Interface

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VDD= +2.7V to +5.25V, GND = 0, REFH_ = VDD, REFL_ = GND, R

LOAD

= 5kΩ, CL = 100pF, TA= -40°C to +85°C, unless otherwise

noted. Typical values are at V

= +3.0V and TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

2.7V ≤ VDD < 3.6V

0.3 x

Input Low Voltage (Note 4) V

3.6V ≤ VDD ≤ 5.25V 1.1

Input Hysteresis V

HYS

0.05 x V

Input Leakage Current I

VIN = 0 or V

±1 µA

Input Capacitance C

10 pF

DIGITAL OUTPUT (SDA)

SINK

= 3mA 0.4

Output Low Voltage V

SINK

= 6mA 0.6

Tri-State Leakage I

±1 µA

Tri-State Output Capacitance C

OUT

15 pF

DYNAMIC PERFORMANCE

SCL to OUT_ Settling t

COS

(Note 5) 8 µs

Crosstalk V

REFH_

= 2.5V

P-P

at 10kHz (Note 6) 55 dB

REFH_

= 2.5V

P-P

at 1kHz 65

Multiplying Signal-to-Noise Plus Distortion

SINAD

REFH_

= 2.5V

P-P

at 10kHz 52

Multiplying Bandwidth V

REFH_

= 0.5V

P-P

, 3dB bandwidth 325 kHz

Reference Feedthrough V

REFH_

= 2.5V

P-P

at f = 10kHz (Note 7) 88 dB

Clock Feedthrough 2.5 nVs

Output Noise e

800

nV/√Hz

Power-Up Time t

SDR

From power-down state 4 µs

Power-Down Time t

SDN

1.5 µs

INTERFACE PORTS (SCL, SDA)

0.3 x

Input Voltage

0.7 x

Input Hysteresis V

HYS

0.05 x V

Input Current I

±1 µA

Input Capacitance C

5pF

POWER SUPPLIES

Power-Supply Voltage V

Normal operation 0.4 0.7

Supply Current I

LOAD

= 0, digital inputs at GND or V

During nonvolatile write

Power-Down Current 25 µA

SYMBOL

MIN TYP MAX

2.70 5.25

MAX5109

Nonvolatile, Dual, 8-Bit DACs with 2-Wire Serial Interface

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VDD= +2.7V to +5.25V, GND = 0, REFH_ = VDD, REFL_ = GND, R

LOAD

= 5kΩ, CL = 100pF, TA= -40°C to +85°C, unless otherwise

noted. Typical values are at V

= +3.0V and TA= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DIGITAL TIMING (Figure 3, Note 8)

SCL Clock Frequency f

SCL

kHz

Setup Time for START Condition

SU:STA

0.6 µs

Hold Time for START Condition t

HD:STA

0.6 µs

SCL High Time t

HIGH

0.6 µs

SCL Low Time t

LOW

1.3 µs

Data Setup Time t

SU:DAT

100 ns

Data Hold Time

0 0.9 µs

SDA, SCL Rise Time t

SDA, SCL Fall Time t

Setup Time for STOP Condition t

SU:STO

0.6 µs

Bus Free Time Between a STOP and START Condition

BUF

1.3 µs

Pulse Width of Spike Suppressed

50 ns

Maximum Capacitive Load for Each Bus Line

(Note 9)

Write NV Register Busy Time (Note 10) 15 ms

NONVOLATILE MEMORY RELIABILITY

Data Retention TA= +85°C50

Years

TA= +25°C

Endurance

= +85°C

Stores

Note 1: All devices are 100% production tested at TA = +25°C. All temperature limits are guaranteed by design. Note 2: Guaranteed monotonic. Note 3: Gain error is defined as:

where V

F0,Meas

is the DAC voltage with input code F0 hex and V

F0,Ideal

is the ideal DAC voltage with input code F0 hex or

REFH

- V

REFL

) x (240 / 256) + V

REFL

Note 4: The device draws higher supply current when the digital inputs are driven with voltages between (V

- 0.5V) and (GND +

0.5V). See Supply Current vs. Digital Input Voltage in the Typical Operating Characteristics.

Note 5: Output settling time is measured from the 50% point of the rising edge of the last SCL of the data byte to 0.5 LSB of OUT_’s

final value for a code transition from 10 hex to F0 hex.

Note 6: Crosstalk is defined as the coupling from a DAC switching from code 00 hex to code FF hex to any other DAC that is in a

steady state at code 00 hex.

Note 7: Reference feedthrough is defined as the coupling from one driven reference with input code = FF hex to any other DAC out-

put with the reference of the DAC at a constant value and input code = 00 hex.

Note 8: SCL clock period includes rise and fall times t

and tF. All digital input signals are specified with tR= tF= 2ns and timed

from a voltage level of (V

+ VIH) / 2.

Note 9: An appropriate bus pullup resistance must be selected depending on board capacitance. Refer to the document linked to

this web address: www.semiconductors.philips.com/acrobat/literature/9398/39340011.pdf.

Note 10:The busy time begins from the initiation of the stop pulse.

256

×−−()

V ZCE V

F Meas F Ideal

REFH

400

HD:DAT

300

400

200,000

50,000

MAX5109

Nonvolatile, Dual, 8-Bit DACs with 2-Wire Serial

Interface

_______________________________________________________________________________________ 5

INTEGRAL NONLINEARITY

vs. INPUT CODE

MAX5109 toc01

INPUT CODE

INTEGRAL NONLINEARITY (LSB)

19212864

-0.5

0.5

1.0

1.5

2.0

-1.0 0 256

INTEGRAL NONLINEARITY

vs. SUPPLY VOLTAGE

MAX5109 toc02

SUPPLY VOLTAGE (V)

INTEGRAL NONLINEARITY (LSB)

5.04.53.0 3.5 4.0

0.25

0.50

0.75

1.00

1.25

1.50

1.75

2.00

2.5 5.5

INTEGRAL NONLINEARITY

vs. TEMPERATURE

MAX5109 toc03

TEMPERATURE (°C)

INTEGRAL NONLINEARITY (LSB)

6035-15 10

0.25

0.50

0.75

1.00

1.50

1.25

1.75

2.00

-40 85

DIFFERENTIAL NONLINEARITY

vs. INPUT CODE

MAX5109 toc04

INPUT CODE

DIFFERENTIAL NONLINEARITY (LSB)

19212864

-0.75

-0.50

-0.25

0.25

0.50

0.75

1.00

-1.00 0 256

DIFFERENTIAL NONLINEARITY

vs. SUPPLY VOLTAGE

MAX5109 toc05

SUPPLY VOLTAGE (V)

DIFFERENTIAL NONLINEARITY (LSB)

5.04.54.03.53.0

-1.25

-1.00

-0.75

-0.50

-0.25

-1.50

2.5 5.5

DIFFERENTIAL NONLINEARITY

vs. TEMPERATURE

MAX5109 toc06

TEMPERATURE (°C)

DIFFERENTIAL NONLINEARITY (LSB)

603510-15

-1.1

-1.0

-0.9

-0.8

-1.2

-40 85

OFFSET ERROR vs. SUPPLY VOLTAGE

MAX5109 toc07

SUPPLY VOLTAGE (V)

OFFSET ERROR (LSB)

5.04.54.03.53.0

0.2

0.3

0.4

0.5

0.1

2.5 5.5

OFFSET ERROR vs. TEMPERATURE

MAX5109 toc08

TEMPERATURE (°C)

OFFSET ERROR (LSB)

603510-15

0.25

0.30

0.35

0.40

0.20

-40 85

GAIN ERROR vs. SUPPLY VOLTAGE

MAX5109 toc09

SUPPLY VOLTAGE (V)

GAIN ERROR (LSB)

5.04.54.03.53.0

-0.18

-0.16

-0.14

-0.12

-0.10

-0.08

-0.06

-0.20

2.5 5.5

Typical Operating Characteristics

(VDD= +3V, V

REFH_

= +3V, V

REFL_

= GND, RL= 5kΩ, CL= 100pF, TA= +25°C, unless otherwise noted.)

MAX5109

Nonvolatile, Dual, 8-Bit DACs with 2-Wire Serial Interface

6 _______________________________________________________________________________________

GAIN ERROR vs. TEMPERATURE

MAX5109 toc10

TEMPERATURE (°C)

GAIN ERROR (LSB)

603510-15

-0.18

-0.16

-0.14

-0.12

-0.10

-0.08

-0.20

-40 85

OFFSET OUTPUT VOLTAGE

vs. OUTPUT SINK CURRENT

MAX5109 toc11

OUTPUT SINK CURRENT (mA)

OFFSET OUTPUT VOLTAGE (V)

8642

0.20

0.25

0.30

0.35

0.40

0.15 010

VDD = V

REFH_

= 5V

REFL_

= 0.2V

VDD = V

REFH_

= 3V

FULL-SCALE OUTPUT VOLTAGE vs. OUTPUT SOURCE CURRENT

MAX5109 toc12

OUTPUT SOURCE CURRENT (mA)

FULL-SCALE OUTPUT VOLTAGE (V)

12963

2.5

3.0

3.5

4.0

4.5

5.0

2.0 015

VDD = V

REFH_

= 5V

VDD = V

REFH_

= 3V

SUPPLY CURRENT

vs. INPUT CODE

MAX5109 toc13

INPUT CODE

SUPPLY CURRENT (µA)

19212864

275

300

325

350

375

400

425

450

250

0 256

NO LOAD

SUPPLY CURRENT

vs. DIGITAL INPUT VOLTAGE

MAX5109 toc14

DIGITAL INPUT VOLTAGE (V)

SUPPLY CURRENT (µA)

1000

100

NO LOAD V

= V

REFH_

= +5V

123405

SUPPLY CURRENT vs. TEMPERATURE

MAX5109 toc15

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

603510-15

240

260

280

300

320

340

360

220

-40 85

NO LOAD

A: V

= 5V, V

REFH_

= 4.096V, CODE = FFh

B: V

= 5V, V

REFH_

= 4.096V, CODE = 00h

C: V

= 3V, V

REFH_

= 2.5V, CODE = FFh

D: V

= 3V, V

REFH_

= 2.5V, CODE = 00h

Typical Operating Characteristics (continued)

(VDD= +3V, V

REFH_

= +3V, V

REFL_

= GND, RL= 5kΩ, CL= 100pF, TA= +25°C, unless otherwise noted.)

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