Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsData collecting ICsData acquisition IC - DA converter (DAC) QSOP 16

General Description

The MAX5105/MAX5106 nonvolatile, quad, 8-bit digital-

to-analog converters (DACs) operate from a single

+2.7V to +5.5V supply. An internal EEPROM stores the

DAC states even after power is removed. Data from

these nonvolatile registers automatically initialize the

DAC outputs and operating states during power-up.

Precision internal buffers swing Rail-to-Rail

, and the

reference input range includes both ground and the

positive rail.

The MAX5105/MAX5106 feature a software-controlled

10µA shutdown mode and a mute state that drives the

DAC outputs to their respective REFL_ voltages. The

MAX5105 includes an asynchronous MUTE input, as

well as a RDY/BSY output that indicates the status of

the nonvolatile memory.

The MAX5105 is available in a 20-pin QSOP and 20-pin

wide SO packages, and the MAX5106 is available in a

16-pin QSOP package.

________________________Applications

Digital Gain and Offset Adjustments

Programmable Attenuators

Portable Instruments

Power-Amp Bias Control

Features

♦ On-Chip EEPROM Stores DAC States

♦ Power-On Reset Initialization of All Registers to

Prestored States

♦ +2.7V to +5.5V Single-Supply Operation

♦ Four 8-Bit DACs with Independent High and Low

Reference Inputs (MAX5105)

♦ Ground to V

Reference Input Range

♦ Rail-to-Rail Output Buffers

♦ Low 1mA Supply Current

♦ Low Power 10µA (max) Shutdown Mode

♦ Small 20- or 16-Pin QSOP Package

♦ SPI™/QSPI™/MICROWIRE™-Compatible Serial

Interface

♦ Asynchronous MUTE Input (MAX5105)

♦ RDY/BSY Pin to Indicate Memory Status

(MAX5105)

♦ Wide Operating Temperature Range

(-40°C to +85°C)

MAX5105/MAX5106

Nonvolatile, Quad, 8-Bit DACs

________________________________________________________________ Maxim Integrated Products 1

REFH2

REFH3

OUT0

OUT1RDY/BSY

REFH0

REFH1

TOP VIEW

OUT2

OUT3

REFL3

REFL2DOUT

DIN

CLK

REFL1

REFL0GND

MUTE

MAX5105

20 QSOP/SOIC

REFH1 REFH2

REFH3

OUT0

OUT1

OUT2

OUT3

REFL1

REFL0

MAX5106

16 QSOP

REFH0

DIN

CLK

DOUT

GND

Ordering Information

Pin Configurations

19-1925; Rev 1; 6/01

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 trademark of Nippon Motorola, Ltd.

SPI/QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

PART TEMP RANGE PIN-PACKAGE

MAX5105EEP -40°C to +85°C 20 QSOP

MAX5105EWP -40°C to +85°C 20 SO

MAX5106EEE -40°C to +85°C 16 QSOP

Summary of content (19 pages)

PAGE 1
9-1925; Rev 1; 6/01 Nonvolatile, Quad, 8-Bit DACs Features ♦ On-Chip EEPROM Stores DAC States The MAX5105/MAX5106 feature a software-controlled 10µA shutdown mode and a mute state that drives the DAC outputs to their respective REFL_ voltages. The MAX5105 includes an asynchronous MUTE input, as well as a RDY/BSY output that indicates the status of the nonvolatile memory. The MAX5105 is available in a 20-pin QSOP and 20-pin wide SO packages, and the MAX5106 is available in a 16-pin QSOP package.
PAGE 2
MAX5105/MAX5106 Nonvolatile, Quad, 8-Bit DACs ABSOLUTE MAXIMUM RATINGS VDD, DIN, CS, CLK, MUTE to GND .............................-0.3V, +6V DOUT, REFH_, REFL_, RDY/BSY, OUT_ to GND .........................................-0.3V to (VDD + 0.3V) Maximum Current into Any Pin .........................................±50mA Continuous Power Dissipation (TA = +70°C) 16-Pin QSOP (derate 8.3mW/°C above +70°C)........666.7mW 20-Pin QSOP (derate 9.1mW/°C above +70°C)........727.
PAGE 3
Nonvolatile, Quad, 8-Bit DACs (VDD = VREFH_ = +2.7V to +5.5V, GND = VREFL_ = 0, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VDD = +3V and TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN ∆VOUT_< 1LSB Output Current (Note 3) Amplifier Output Resistance (Note 3) TYP MAX UNITS ±1.0 mA 3 Ω DIGITAL INPUTS Input High Voltage VIH Input Low Voltage VIL Input Current IIN Input Capacitance CIN 0.7 x VDD V VIN = 0 or VDD 0.
PAGE 4
MAX5105/MAX5106 Nonvolatile, Quad, 8-Bit DACs ELECTRICAL CHARACTERISTICS (continued) (VDD = VREFH_ = +2.7V to +5.5V, GND = VREFL_ = 0, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VDD = +3V and TA = +25°C.
PAGE 5
Nonvolatile, Quad, 8-Bit DACs DAC FULL-SCALE OUTPUT VOLTAGE vs. OUTPUT SOURCE CURRENT VDD = +3V VREFL_ = +0.2V 0.3 VDD = +5V VREFL_ = +0.2V 0.2 4 VDD = VREFH_ = +3V 3 2 700 MAX5105/06 toc03 MAX5105/06 toc02 VDD = VREFH_ = +5V 5 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 0.4 SUPPLY CURRENT vs. TEMPERATURE 6 MAX5105/06 toc01 0.5 650 SUPPLY CURRENT (µA) DAC ZERO-CODE OUTPUT VOLTAGE vs. OUTPUT SINK CURRENT 600 VDD = +5V VREFH_ = +4.096V 550 500 VDD = +3V VREFH_ = +2.5V 450 400 0.
PAGE 6
Typical Operating Characteristics (continued) (RL = ∞, code = FFhex, VREFL_ = GND, TA = +25°C, unless otherwise noted.) -20 -25 -30 VREF = 0.5Vp-p SINE-WAVE CENTERED AT +2.5V DAC CODE = FFhex VDD = +5.0V -35 -40 -45 1 10 100 1k -50 -60 -70 -80 10 100 1k 1LSB DIGITAL STEP-CHANGE (NEGATIVE) 1LSB DIGITAL STEP-CHANGE (NEGATIVE) MAX5105/06 toc15 50mV/div 50mV/div 3V 0 OUT1 1.0 µs/div fCLK = 500kHz CODE = 80 HEX TO 7F HEX RL = 10kΩ VDD = +5.0V VREFH1 = +4.
PAGE 7
Nonvolatile, Quad, 8-Bit DACs POSITIVE SETTLING TIME POSITIVE SETTLING TIME MAX5105/06 toc19 MAX5105/06 toc20 3V CS 5V CS 0 0 2.5V 4.096V OUT1 OUT1 0 VDD = +3.0V VREFH1 = +2.5V CLOAD = 100pF 0 1.0 µs/div fCLK = 500kHz CODE = 00 HEX TO FF HEX RL = 10kΩ VDD = +5.0V VREFH1 = +4.096V CLOAD = 100pF NEGATIVE SETTLING TIME 2.0 µs/div fCLK = 500kHz CODE = 00 HEX TO FF HEX RL = 10kΩ NEGATIVE SETTLING TIME MAX5105/06 toc21 MAX5105/06 toc22 3V CS 5V CS 0 0 2.5V 4.
PAGE 8
Nonvolatile, Quad, 8-Bit DACs MAX5105/MAX5106 Pin Description PIN NAME FUNCTION MAX5105 MAX5106 1 1 REFH1 DAC1 High Reference Input 2 2 REFH0 DAC0 High Reference Input 3 3 VDD 4 — RDY/BSY 5 4 CLK Serial Clock Input 6 5 CS Chip Select Input 7 6 DIN Serial Data Input 8 7 DOUT Serial Data Output 9 — MUTE Mute Input. Drives all DAC outputs to their respective REFL_ voltages. 10 8 GND Ground. Serves as REFL2 and REFL3 for the MAX5106.
PAGE 9
Nonvolatile, Quad, 8-Bit DACs Bit in Register D7 (MSB) D6 D5 D4 Controlling Function Mute DAC3 Mute DAC2 Mute DAC1 Mute DAC0 R1 R15 D7 D5 D4 REFL LSB DECODER D2 D1 Shutdown DAC1 D0 (LSB) Shutdown DAC0 The MAX5105/MAX5106 internal EEPROM consists of five nonvolatile registers that retain the DAC output and operating states after the device is powered down. Four registers store data for each DAC, and one stores the mute and shutdown states for the device.
PAGE 10
MAX5105/MAX5106 Nonvolatile, Quad, 8-Bit DACs Table 2. Serial Interface Programming Commands 14-BIT SERIAL WORD FUNCTION START C1 C0 A2 A1 A0 D7–D0 1 0 0 0 0 0 8-bit DAC data Write DAC data to DAC0 nonvolatile register. Output remains unchanged. 1 0 0 0 0 1 8-bit DAC data Write DAC data to DAC1 nonvolatile register. Output remains unchanged. 1 0 0 0 1 0 8-bit DAC data Write DAC data to DAC2 nonvolatile register. Output remains unchanged.
PAGE 11
Nonvolatile, Quad, 8-Bit DACs 14-BIT SERIAL WORD START 1 1 1 1 1 C1 1 1 1 1 1 C0 1 1 1 1 1 A2 0 0 0 0 1 A1 0 0 1 1 0 A0 0 1 0 1 0 D7–D0 MAX5105/MAX5106 Table 2. Serial Interface Programming Commands (continued) FUNCTION XXXXXXXX Load DAC0 nonvolatile register. Contents of DAC0 nonvolatile register are loaded into the corresponding volatile register and OUT0 updated. D7–D0 are ignored, and all other DAC outputs remain unchanged.
PAGE 12
MAX5105/MAX5106 Nonvolatile, Quad, 8-Bit DACs INSTRUCTION EXECUTED CS SCLK DIN S C1 C0 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 DACO DACO Figure 2. 3-Wire Interface Timing CS tCHST tCP tCH tCSS tCSH tCL CLK tDS tDH DIN tCD tCDV DOUT Figure 3. Detailed Serial-Interface Timing Diagram THIS IS THE FIRST BIT SHIFTED IN MSB DOUT LSB START C1 C0 A2 A1 A0 D7 D6 . . . D1 D0 CONTROL AND ADDRESS BITS DIN 8-BIT DAC DATA Figure 4.
PAGE 13
Nonvolatile, Quad, 8-Bit DACs START C1 1 C0 0 A2 0 A1 A0 D7 D6 D5 D4 Address D3 D2 D1 D0 D2 D1 D0 D2 D1 D0 D2 D1 D0 D2 D1 D0 8-Bit Data Table 4. Register Write Command START C1 1 C0 0 A2 1 A1 A0 D7 D6 D5 D4 Address D3 8-Bit Data Table 5. Nonvolatile Read Command START C1 1 C0 1 A2 0 A1 A0 D7 D6 D5 D4 Address D3 Don’t Care Table 6. Nonvolatile Load Command START C1 1 C0 1 A2 1 A1 A0 D7 D6 D5 D4 Address D3 Don’t Care Table 7.
PAGE 14
MAX5105/MAX5106 Nonvolatile, Quad, 8-Bit DACs CS CLK DIN START C1 C0 A2 A1 A0 D7 D6 D5 D3 D4 D2 D1 D0 HIGH IMPEDANCE DOUT tCOS OUT_ AT VDD RDY/BSY (MAX5105 ONLY) Figure 6. Register Write Command Timing Diagram CS CLK DIN CI START CO A2 A1 A0 HIGH IMPEDANCE DOUT RDY/BSY D7 D6 D5 D4 D3 D2 D1 D0 AT VDD (MAX5105 ONLY) Figure 7. Nonvolatile Read Command Timing Diagram on the rising edge of CLK corresponding to D0.
PAGE 15
Nonvolatile, Quad, 8-Bit DACs MAX5105/MAX5106 CS CLK DIN START C1 C0 A2 A1 A0 HIGH IMPEDANCE DOUT tCOS OUT_ AT VDD RDY/BSY (MAX5105 ONLY) Figure 8. Nonvolatile Load Command Timing Diagram Mute/Shutdown Modes The MAX5105/MAX5106 feature software-controlled mute and shutdown modes. The shutdown mode places the DAC outputs in a high-impedance state and reduces quiescent current consumption to 10µA (max) with all DACs disabled. OUTPUT VOLTAGE O NEGATIVE OFFSET DAC CODE Figure 9.
PAGE 16
MAX5105/MAX5106 Nonvolatile, Quad, 8-Bit DACs This initialization period takes about 80µs with the DAC registers loading first and the mute/shutdown register loading last. During this time, the DAC outputs are held in the mute state and the serial interface is disabled. Once the mute/shutdown register is loaded, the DAC outputs are updated to their stored data and operating states, and the serial interface is enabled.
PAGE 17
Nonvolatile, Quad, 8-Bit DACs MUTE* VDD OSCILLATOR POWER-ON RESET CIRCUIT MAX5105 MAX5106 REFH0 DAC0 NONVOLATILE REGISTER DAC0 VOLATILE REGISTER DAC0 OUT0 REFL0 REFH1 RDY/BSY* DAC1 NONVOLATILE REGISTER DAC1 VOLATILE REGISTER DAC1 OUT1 DOUT DIN REFL1 14-BIT SHIFT REGISTER/ COMMAND DECODER REFH2 DAC2 NONVOLATILE REGISTER CLK DAC2 VOLATILE REGISTER DAC2 OUT2 REFL2* CS REFH3 DAC3 NONVOLATILE REGISTER DAC3 VOLATILE REGISTER DAC3 OUT3 REFL3* MUTE/ SHUTDOWN NONVOLATILE REGISTER GND MUTE/ S
PAGE 18
Nonvolatile, Quad, 8-Bit DACs QSOP.
PAGE 19
Nonvolatile, Quad, 8-Bit DACs 20L, SOIC.EPS 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 ____________________ 19 © 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.