AD7305BR-REEL7

AD7305BR-REEL7 Datasheet

Automotive output span voltage Instrumentation, digitally controlled calibration Pin-compatible AD7226 replacement when VDD < V

Part	Datasheet
AD7305BR-REEL7	AD7305BR-REEL7 (pdf)

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Four 8-bit DACs in one package +3 V, +5 V, and ±5 V operation Rail-to-rail REF input to voltage output swing MHz reference multiplying bandwidth Internal power-on reset SPI serial Fast parallel 40 µA power shutdown Automotive output span voltage Instrumentation, digitally controlled calibration Pin-compatible AD7226 replacement when VDD < V The AD7304/AD73051 are quad, 8-bit DACs that operate from a single +3 V to +5 V supply, or ±5 V supplies. The AD7304 has a serial interface, while the AD7305 has a parallel interface. Internal precision buffers swing rail-to-rail. The reference input range includes both supply rails, allowing for positive or negative full-scale output voltages. Operation is guaranteed over the supply voltage range of V to V, consuming less than 9 mW from a 3 V supply. The full-scale voltage output is determined by the external reference input voltage applied. The rail-to-rail VREF input to DAC VOUT allows for a full-scale voltage set equal to the positive supply, VDD, the negative supply, VSS, or any value in between. The AD7304’s doubled-buffered serial data interface offers high speed, 3-wire, and microcontroller-compatible inputs using data in SDI , clock CLK , and chip select CS pins. Additionally, an internal power-on reset sets the output to zero scale. The parallel input AD7305 uses a standard address decode along with the WR control line to load data into the input registers. The double-buffered architecture allows all four input registers to be preloaded with new values, followed by an LDAC control strobe that copies all the new data into the DAC registers, thereby updating the analog output values. 1 Protected under Patent No. 3 V/5 V, Rail-to-Rail Quad, 8-Bit DAC AD7304/AD7305 FUNCTIONAL BLOCK DIAGRAMS VREFB VREFA CS SDI/SHDN PWR-ON RESET INPUT 8 DAC A 8 REG A INPUT 8 DAC B 8 REG B SERIAL REG INPUT 8 DAC C 8 REG C INPUT 8 DAC D 8 REG D DAC A VOUTA DAC B VOUTB DAC C VOUTC DAC D AD7304 VOUTD 01114-001 VSS GND CLR LDAC VREFC VREFD Figure VREF DB0 DB1 DB2 DB3 DB4 DB5 DB6 WR A0/SHDN PWR-ON RESET INPUT 8 DAC A 8 REG A AD7304/AD7305 Power-On Reset 15 Power up 15 AD7305 Parallel Data Interface 16 AD7226 Pin Compatibility 16 AD7305 Hardware Shutdown 16 ESD Protection Circuits 16 17 Outline Dimensions 18 Ordering Guide 19 AD7304/AD7305 SPECIFICATIONS VDD = 3 V or 5 V, VSS = 0 V or VDD = +5 V and VSS = V, VSS VREF VDD, −40°C < TA < +85°C/+125°C, unless otherwise noted. Table Parameter Symbol Condition 3 V ± 10% 5 V ± 10% ±5 V ± 10% Unit STATIC PERFORMANCE Resolution1 Bits Integral Nonlinearity2 LSB max Differential Nonlinearity DNL Monotonic, all codes 0 to 0xFF LSB max Zero-Scale Error Full-Scale Voltage Error Full-Scale Temperature Coefficient3 VZSE VFSE TCVFS Data = 0x00 Data = 0xFF ±15 mV max LSB max ppm/°C typ4 REFERENCE INPUT VREFIN Range VREFIN VSS/VDD VSS/VDD VSS/VDD V min/max Input Resistance AD7304 Input Resistance AD7305 Input Capacitance3 RREFIN CREFIN Code = 0x55 All DACs at code = 0x55 pF typ ANALOG OUTPUTS Output Voltage Range VOUT VSS/VDD ORDERING GUIDE Model AD7304BR-REEL AD7304BRZ1 AD7304BRZ-REEL1 AD7304YR AD7304YRZ1 AD7304BRU-REEL7 AD7305BR-REEL AD7305YR-REEL AD7305BRU-REEL7 AD7305BRUZ1 AD7305BRUZ-REEL71 1 Z = Pb-free part. Temperature Range to +85°C to +85°C to +85°C to +85°C to +125°C to +125°C to +85°C to +85°C to +85°C to +85°C to +125°C to +125°C to +85°C to +85°C to +85°C to +85°C Package Description 16-Lead SOIC 16-Lead SOIC 16-Lead SOIC 16-Lead SOIC 16-Lead SOIC 16-Lead SOIC 16-Lead TSSOP 16-Lead TSSOP 20-Lead SOIC 20-Lead SOIC 20-Lead SOIC 20-Lead SOIC 20-Lead TSSOP 20-Lead TSSOP 20-Lead TSSOP 20-Lead TSSOP AD7304/AD7305 Package Options R-16 R-16 R-16 R-16 R-16 R-16 RU-16 RU-16 R-20 R-20 R-20 R-20 RU-20 RU-20 RU-20 RU-20 AD7304/AD7305 NOTES 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective companies. Printed in the U.S.A. C01114-0-11/04 C

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Four 8-bit DACs in one package +3 V, +5 V, and ±5 V operation Rail-to-rail REF input to voltage output swing MHz reference multiplying bandwidth Internal power-on reset SPI serial Fast parallel 40 µA power shutdown

Automotive output span voltage Instrumentation, digitally controlled calibration Pin-compatible AD7226 replacement when VDD < V

The AD7304/AD73051 are quad, 8-bit DACs that operate from a single +3 V to +5 V supply, or ±5 V supplies. The AD7304 has a serial interface, while the AD7305 has a parallel interface. Internal precision buffers swing rail-to-rail. The reference input range includes both supply rails, allowing for positive or negative full-scale output voltages. Operation is guaranteed over the supply voltage range of V to V, consuming less than 9 mW from a 3 V supply.

The full-scale voltage output is determined by the external reference input voltage applied. The rail-to-rail VREF input to DAC VOUT allows for a full-scale voltage set equal to the positive supply, VDD, the negative supply, VSS, or any value in between.

The AD7304’s doubled-buffered serial data interface offers high speed, 3-wire, and microcontroller-compatible inputs using data in SDI , clock CLK , and chip select CS pins. Additionally, an internal power-on reset sets the output to zero scale.

The parallel input AD7305 uses a standard address decode along with the WR control line to load data into the input registers.

The double-buffered architecture allows all four input registers to be preloaded with new values, followed by an LDAC control strobe that copies all the new data into the DAC registers, thereby updating the analog output values.
1 Protected under Patent No.
3 V/5 V, Rail-to-Rail Quad, 8-Bit DAC AD7304/AD7305

FUNCTIONAL BLOCK DIAGRAMS

VREFB VREFA

CS SDI/SHDN

PWR-ON RESET

INPUT 8 DAC A 8

REG A

INPUT 8 DAC B 8

REG B

SERIAL REG

INPUT 8 DAC C 8

REG C

INPUT 8 DAC D 8

REG D

DAC A

VOUTA

DAC B

VOUTB

DAC C

VOUTC

DAC D

AD7304

VOUTD
01114-001

VSS GND

CLR LDAC VREFC VREFD

Figure

VREF

DB0 DB1 DB2 DB3 DB4 DB5 DB6

WR A0/SHDN

PWR-ON RESET

INPUT 8 DAC A 8

REG A
AD7304/AD7305 Power-On Reset 15 Power up 15 AD7305 Parallel Data Interface 16 AD7226 Pin Compatibility 16 AD7305 Hardware Shutdown 16 ESD Protection Circuits 16 17 Outline Dimensions 18 Ordering Guide 19

AD7304/AD7305

SPECIFICATIONS

VDD = 3 V or 5 V, VSS = 0 V or VDD = +5 V and VSS = V, VSS VREF VDD, −40°C < TA < +85°C/+125°C, unless otherwise noted.

Table

Parameter

Symbol Condition
3 V ± 10%
5 V ± 10% ±5 V ± 10% Unit

STATIC PERFORMANCE

Resolution1

Bits

Integral Nonlinearity2

LSB max

Differential Nonlinearity DNL

Monotonic, all codes 0 to 0xFF

LSB max

Zero-Scale Error

Full-Scale Voltage Error

Full-Scale Temperature Coefficient3

VZSE VFSE TCVFS

Data = 0x00 Data = 0xFF
±15
mV max

LSB max
ppm/°C typ4

REFERENCE INPUT

VREFIN Range

VREFIN

VSS/VDD

VSS/VDD

VSS/VDD

V min/max

Input Resistance AD7304 Input Resistance AD7305 Input Capacitance3

RREFIN CREFIN

Code = 0x55 All DACs at code = 0x55
pF typ

ANALOG OUTPUTS

Output Voltage Range

VOUT

VSS/VDD
ORDERING GUIDE

Model AD7304BR-REEL AD7304BRZ1 AD7304BRZ-REEL1 AD7304YR AD7304YRZ1 AD7304BRU-REEL7 AD7305BR-REEL AD7305YR-REEL AD7305BRU-REEL7 AD7305BRUZ1 AD7305BRUZ-REEL71
1 Z = Pb-free part.

Temperature Range to +85°C to +85°C to +85°C to +85°C to +125°C to +125°C to +85°C to +85°C to +85°C to +85°C to +125°C to +125°C to +85°C to +85°C to +85°C to +85°C

Package Description 16-Lead SOIC 16-Lead SOIC 16-Lead SOIC 16-Lead SOIC 16-Lead SOIC 16-Lead SOIC 16-Lead TSSOP 16-Lead TSSOP 20-Lead SOIC 20-Lead SOIC 20-Lead SOIC 20-Lead SOIC 20-Lead TSSOP 20-Lead TSSOP 20-Lead TSSOP 20-Lead TSSOP

AD7304/AD7305

Package Options R-16 R-16 R-16 R-16 R-16 R-16 RU-16 RU-16 R-20 R-20 R-20 R-20 RU-20 RU-20 RU-20 RU-20

AD7304/AD7305 NOTES
2004 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective companies.

Printed in the U.S.A.

C01114-0-11/04 C

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Datasheet ID: AD7305BR-REEL7 517727