AD7846ACHIPS

AD7846ACHIPS Datasheet


The AD7846 is a 16-bit DAC constructed with the Analog Devices, Inc., LC2MOS process. It has VREF+ and VREF− reference inputs and an on-chip output amplifier. These can be configured to give a unipolar output range 0 V to +5 V, 0 V to +10 V or bipolar output ranges ±5 V, ±10 V . The DAC uses a segmented architecture. The four MSBs in the DAC latch select one of the segments in a 16-resistor string. Both taps of the segment are buffered by amplifiers and fed to a 12-bit DAC, which provides a further 12 bits of resolution. This architecture ensures 16-bit monotonicity. Excellent integral linearity results from tight matching between the input offset voltages of the two buffer amplifiers. In addition to the excellent accuracy specifications, the AD7846 also offers a comprehensive microprocessor interface. There are 16 data I/O pins, plus control lines CS, R/W, LDAC and CLR . R/W and CS allow writing to and reading from the I/O latch. This is the readback function, which is useful in ATE applications. LDAC allows simultaneous updating of DACs in a multi-DAC system and the CLR line will reset the contents of the DAC latch

Part Datasheet
AD7846ACHIPS AD7846ACHIPS AD7846ACHIPS (pdf)
Related Parts Information
AD7846KP-REEL AD7846KP-REEL AD7846KP-REEL
PDF Datasheet Preview
16-bit monotonicity over temperature ±2 LSBs integral linearity error Microprocessor compatible with readback capability Unipolar or bipolar output Multiplying capability Low power 100 mW typical

The AD7846 is a 16-bit DAC constructed with the Analog Devices, Inc., LC2MOS process. It has VREF+ and VREF− reference inputs and an on-chip output amplifier. These can be configured to give a unipolar output range 0 V to +5 V, 0 V to +10 V or bipolar output ranges ±5 V, ±10 V . The DAC uses a segmented architecture. The four MSBs in the DAC latch select one of the segments in a 16-resistor string. Both taps of the segment are buffered by amplifiers and fed to a 12-bit DAC, which provides a further 12 bits of resolution. This architecture ensures 16-bit monotonicity. Excellent integral linearity results from tight matching between the input offset voltages of the two buffer amplifiers. In addition to the excellent accuracy specifications, the AD7846 also offers a comprehensive microprocessor interface. There are 16 data I/O pins, plus control lines CS, R/W, LDAC and CLR . R/W and CS allow writing to and reading from the I/O latch. This is the readback function, which is useful in ATE applications. LDAC allows simultaneous updating of DACs in a multi-DAC system and the CLR line will reset the contents of the DAC latch

LC2MOS 16-Bit Voltage Output DAC

AD7846

VREF+ 7 R

FUNCTIONAL BLOCK DIAGRAM

VCC 21

VDD 4

A2 16 SEGMENT SWITCH MATRIX

AD7846

R 6 RIN
12-BIT DAC 12

DAC LATCH 12

I/O LATCH
5 VOUT
23 CS

CONTROL 22 R/W LOGIC 25 LDAC
24 CLR

DB15 DB0

DGND

Figure
08490-001
to or depending on the state of R/W. This means that the DAC output can be reset to 0 V in both the unipolar and bipolar configurations.

The AD7846 is available in 28-lead plastic, ceramic, and PLCC packages.

PRODUCT HIGHLIGHTS
16-Bit Monotonicity The guaranteed 16-bit monotonicity over temperature makes the AD7846 ideal for closed-loop applications.

Readback The ability to read back the DAC register contents minimizes software routines when the AD7846 is used in ATE systems.

Power Dissipation Power dissipation of 100 mW makes the AD7846 the lowest power, high accuracy DAC on the market.

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel:

Fax Analog Devices, Inc. All rights reserved.

AD7846* Product Page Quick Links

Last Content Update 08/30/2016

Comparable Parts

View a parametric search of comparable parts

Documentation

Data Sheet
• AD7846 LC2MOS16-Bit Voltage Output DAC Data Sheet
• AD7846 Military Data Sheet

Reference Materials

Solutions Bulletins & Brochures
• Digital to Analog Converters ICs Solutions Bulletin

Design Resources
Output 12 Unipolar Binary Operation 13 Bipolar 14

Multiplying 14 Position Measurement 15 Microprocessor 16
AD7846-to-8086 Interface 16 AD7846-to-MC68000 Interface 16 Digital Feedthrough 17 Application Hints 18 Noise 18 Grounding 18 Printed Circuit Board Layout 18 Outline Dimensions 20 Ordering Guide 22

AD7846

SPECIFICATIONS

VDD = V to V VSS = V to V VCC = V to V. VOUT loaded with 2 kΩ, 1000 pF to 0 V VREF+ = +5 V RIN connected to 0 V. All specifications TMIN to TMAX, unless otherwise noted.

Table Parameter1 RESOLUTION UNIPOLAR OUTPUT

Relative Accuracy at +25°C TMIN to TMAX

Differential Nonlinearity Error Gain Error at +25°C

TMIN to TMAX Offset Error at +25°C

TMIN to TMAX Gain TC2 Offset TC2 BIPOLAR OUTPUT Relative Accuracy at +25°C

TMIN to TMAX Differential Nonlinearity Error Gain Error at +25°C

TMIN to TMAX Offset Error at +25°C

TMIN to TMAX Bipolar Zero Error at +25°C

TMIN to TMAX Gain TC2 Offset TC2 Bipolar Zero TC2 REFERENCE INPUT Resistance

VREF+ Range

VREF− Range

OUTPUT CHARACTERISTICS Output Voltage Swing

Resistive Load Capacitive Load Output Resistance Short Circuit Current DIGITAL INPUTS VIH Input High Voltage VIL Input Low Voltage IIN Input Current CIN Input Capacitance 2

J, A Versions 16
±12 ±16 ±1 ±12 ±16 ±12 ±16 ±1 ±1
±6 ±8 ±1 ±6 ±16 ±6 ±16 ±6 ±12 ±1 ±1 ±1

K, B Versions 16
±4 ±8 ±6 ±16 ±6 ±16 ±1 ±1
±2 ±4 ±4 ±16 ±4 ±12 ±4 ±8 ±1 ±1 ±1

Unit Bits

LSB typ LSB max LSB max LSB typ LSB max LSB typ LSB max ppm FSR/°C typ ppm FSR/°C typ

LSB typ LSB max LSB max LSB typ LSB max LSB typ LSB max LSB typ LSB max ppm FSR/°Ctyp ppm FSR/°Ctyp ppm FSR/°Ctyp

Test Conditions/Comments VREF− = 0 V, VOUT = 0 V to +10 V 1 LSB = 153 uV All grades guaranteed monotonic VOUT load = 10 MΩ

VREF− = V, VOUT = −10 V to +10 V 1 LSB = 305 uV All grades guaranteed monotonic VOUT load = 10 MΩ VOUT load = 10 MΩ
20 40 VSS + 6 to VDD − 6 VSS + 6 to VDD − 6
20 40 VSS + 6 to VDD − 6 VSS + 6 to VDD − 6
kΩ min kΩ max V min to V max V min to V max

Resistance from VREF+ to VREF− Typically 30 kΩ

VSS + 4 to VDD − 3 2 1000 ±25

VSS + 4 to VDD − 3 2 1000 ±25

V max
kΩ min pF max Ω typ mA typ

To 0 V To 0 V

To 0 V or any power supply

V min

V max
±10
ORDERING GUIDE

Model1

Temperature Range
5962-89697013A −55°C to +125°C
5962-8969701XA −55°C to +125°C

AD7846JN
0°C to +70°C

AD7846JNZ
0°C to +70°C

AD7846KN
0°C to +70°C

AD7846KNZ
0°C to +70°C

AD7846JP
0°C to +70°C

AD7846JP-REEL 0°C to +70°C

AD7846JPZ
0°C to +70°C

AD7846JPZ-REEL 0°C to +70°C

AD7846KP
0°C to +70°C

AD7846KP-REEL 0°C to +70°C

AD7846KPZ
0°C to +70°C

AD7846KPZ-REEL 0°C to +70°C

AD7846AP
−40°C to +85°C

AD7846APZ
−40°C to +85°C

AD7846AQ
−40°C to +85°C

AD7846BP
−40°C to +85°C

AD7846BPZ
−40°C to +85°C

AD7846ACHIPS
−40°C to +85°C
1 Z = RoHS Compliant Part.

Relative Accuracy ±16 LSB ±16 LSB ±16 LSB ±16 LSB ±8 LSB ±8 LSB ±16 LSB ±16 LSB ±16 LSB ±16 LSB ±8 LSB ±8 LSB ±8 LSB ±8 LSB ±16 LSB ±16 LSB ±16 LSB ±8 LSB ±8 LSB ±16 LSB

Package Description 28-Terminal Ceramic Leadless Chip Carrier [LCC] 28-Lead Ceramic Dual In-Line Package [CERDIP] 28-Lead Plastic Dual In-Line Package [PDIP] 28-Lead Plastic Dual In-Line Package [PDIP] 28-Lead Plastic Dual In-Line Package [PDIP] 28-Lead Plastic Dual In-Line Package [PDIP] 28-Lead Plastic Leaded Chip Carrier [PLCC] 28-Lead Plastic Leaded Chip Carrier [PLCC] 28-Lead Plastic Leaded Chip Carrier [PLCC] 28-Lead Plastic Leaded Chip Carrier [PLCC] 28-Lead Plastic Leaded Chip Carrier [PLCC] 28-Lead Plastic Leaded Chip Carrier [PLCC] 28-Lead Plastic Leaded Chip Carrier [PLCC] 28-Lead Plastic Leaded Chip Carrier [PLCC] 28-Lead Plastic Leaded Chip Carrier [PLCC] 28-Lead Plastic Leaded Chip Carrier [PLCC] 28-Lead Ceramic Dual In-Line Package [CERDIP] 28-Lead Plastic Leaded Chip Carrier [PLCC] 28-Lead Plastic Leaded Chip Carrier [PLCC]

Package Option E-28-1 Q-28-2 N-28-2 N-28-2 N-28-2 N-28-2 P-28 P-28 P-28 P-28 P-28 P-28 P-28 P-28 P-28 P-28 Q-28-2 P-28 P-28 DIE
More datasheets: C512T-WNS-CW0Z0151 | 363-2SURD/S530-A3 | SR502-T-F | SR505-T | SR506-T | SR504-T | SR503-T | SR502-T | 3AD-201 | 3AC-201


Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived AD7846ACHIPS Datasheet file may be downloaded here without warranties.

Datasheet ID: AD7846ACHIPS 517740