AD5346BRU Analog Devices Inc, AD5346BRU Datasheet

IC DAC 8BIT OCTAL VOUT 38-TSSOP

AD5346BRU

Manufacturer Part Number
AD5346BRU
Description
IC DAC 8BIT OCTAL VOUT 38-TSSOP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD5346BRU

Rohs Status
RoHS non-compliant
Settling Time
6µs
Number Of Bits
8
Data Interface
Parallel
Number Of Converters
8
Voltage Supply Source
Single Supply
Power Dissipation (max)
8.3mW
Operating Temperature
-40°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
38-TSSOP
Number Of Channels
8
Resolution
8b
Conversion Rate
167KSPS
Interface Type
Parallel
Single Supply Voltage (typ)
3.3/5V
Dual Supply Voltage (typ)
Not RequiredV
Architecture
Resistor-String
Power Supply Requirement
Single
Output Type
Voltage
Single Supply Voltage (min)
2.5V
Single Supply Voltage (max)
5.5V
Dual Supply Voltage (min)
Not RequiredV
Dual Supply Voltage (max)
Not RequiredV
Operating Temp Range
-40C to 105C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
38
Lead Free Status / Rohs Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD5346BRUZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
FEATURES
AD5346: octal 8-bit DAC
AD5347: octal 10-bit DAC
AD5348: octal 12-bit DAC
Low power operation: 1.4 mA (max) @ 3.6 V
Power-down to 120 nA @ 3 V, 400 nA @ 5 V
Guaranteed monotonic by design over all codes
Rail-to-rail output range: 0 V to V
Power-on reset to 0 V
Simultaneous update of DAC outputs via LDAC pin
Asynchronous CLR facility
Readback
Buffered/unbuffered reference inputs
20 ns WR time
38-lead TSSOP/6 mm × 6 mm 40-lead LFCSP packaging
Temperature range: –40°C to +105°C
APPLICATIONS
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Optical networking
Automatic test equipment
Mobile communications
Programmable attenuators
Industrial process control
1
Rev. 0
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.
Protected by U.S. Patent No. 5,969,657; other patents pending.
LDAC
GAIN
DB11
BUF
CLR
DB0
WR
CS
RD
A2
A1
A0
.
.
.
REF
or 0 V to 2 × V
INTER-
FACE
LOGIC
V
DD
FUNCTIONAL BLOCK DIAGRAM
AD5348
AGND
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REF
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
Octal Voltage Output 8-/10-/12-Bit DACs
DGND
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
DAC
DAC
DAC
DAC
DAC
DAC
DAC
DAC
Figure 1.
V
V
STRING
STRING
STRING
STRING
STRING
REF
STRING
STRING
STRING
DAC A
DAC B
DAC C
DAC D
REF
DAC E
DAC G
DAC H
2.5 V to 5.5 V, Parallel Interface
DAC F
GH
GENERAL DESCRIPTION
The AD5346/AD5347/AD5348
DACs, operating from a 2.5 V to 5.5 V supply. These devices
incorporate an on-chip output buffer that can drive the output
to both supply rails, and also allow a choice of buffered or
unbuffered reference input.
The AD5346/AD5347/AD5348 have a parallel interface. CS
selects the device and data is loaded into the input registers on
the rising edge of WR . A readback feature allows the internal
DAC registers to be read back through the digital port.
The GAIN pin on these devices allows the output range to be
set at 0 V to V
Input data to the DACs is double-buffered, allowing simultane-
ous update of multiple DACs in a system using the LDAC pin.
An asynchronous CLR input is also provided, which resets the
contents of the input register and the DAC register to all zeros.
These devices also incorporate a power-on reset circuit that
ensures that the DAC output powers on to 0 V and remains
there until valid data is written to the device.
All three parts are pin compatible, which allows users to select
the amount of resolution appropriate for their application
without redesigning their circuit board.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
AB
V
REF
V
REF
EF
CD
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
AD5346/AD5347/AD5348
REF
POWER-ON
POWER-DOWN
or 0 V to 2 × V
RESET
LOGIC
PD
© 2003 Analog Devices, Inc. All rights reserved.
V
V
V
V
V
V
V
V
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
C
E
F
1
D
G
H
A
B
REF
are octal 8-, 10-, and 12-bit
.
www.analog.com

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AD5346BRU Summary of contents

Page 1

FEATURES AD5346: octal 8-bit DAC AD5347: octal 10-bit DAC AD5348: octal 12-bit DAC Low power operation: 1.4 mA (max) @ 3.6 V Power-down to 120 400 Guaranteed monotonic by design over all ...

Page 2

AD5346/AD5347/AD5348 TABLE OF CONTENTS Specifications..................................................................................... 3 AC Characteristics............................................................................ 4 Timing Characteristics..................................................................... 5 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 AD5346 Pin Configurations and Function Descriptions ........... 7 AD5347 Pin Configurations and Function Descriptions ........... 8 AD5348 Pin Configurations and Function ...

Page 3

SPECIFICATIONS Table 2 5 REF unless otherwise noted 2 Parameter Min 3,4 DC PERFORMANCE AD5346 Resolution Relative Accuracy Differential Nonlinearity AD5347 Resolution Relative Accuracy Differential Nonlinearity AD5348 Resolution ...

Page 4

AD5346/AD5347/AD5348 2 Parameter Min 6 LOGIC OUTPUTS Output Low Voltage Output High Voltage – 2 3 Output Low Voltage, ...

Page 5

TIMING CHARACTERISTICS Table 2 5.5 V; all specifications T DD Parameter Limit at T Data Write Mode (Figure 4 ...

Page 6

AD5346/AD5347/AD5348 ABSOLUTE MAXIMUM RATINGS Table 25°C, unless otherwise noted A Parameter V to GND DD Digital Input Voltage to GND Digital Output Voltage to GND Reference Input Voltage to GND V to GND OUT Operating Temperature Range ...

Page 7

AD5346 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS REF REF REF REF OUT 8-BIT AD5346 ...

Page 8

AD5346/AD5347/AD5348 AD5347 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS REF REF V CD REF REF 10-BIT OUT AD5347 V B ...

Page 9

AD5348 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS REF REF V CD REF REF 12-BIT OUT AD5348 ...

Page 10

AD5346/AD5347/AD5348 TERMINOLOGY Relative Accuracy For the DAC, relative accuracy or integral nonlinearity (INL measure of the maximum deviation, in LSBs, from a straight line passing through the actual endpoints of the DAC transfer function. Typical INL versus code ...

Page 11

Offset Error Drift This is a measure of the change in offset error with changes in temperature expressed in (ppm of full-scale range)/°C. Gain Error Drift This is a measure of the change in gain error with changes ...

Page 12

AD5346/AD5347/AD5348 TYPICAL PERFORMANCE CHARACTERISTICS 1 25° 0.5 0 –0.5 –1 100 150 CODE Figure 14. AD5346 Typical INL Plot 25° ...

Page 13

25°C 0.4 A MAX INL 0.3 0.2 MAX DNL 0.1 0 –0.1 MIN DNL –0.2 MIN INL –0.3 –0.4 –0 (V) REF Figure 20. AD5346 INL and DNL ...

Page 14

AD5346/AD5347/AD5348 1 REF GAIN = 1 UNBUFFERED 1 –40° 1.0 0 +105°C A 0.6 0.4 0.2 0 2.5 3.0 3.5 4.0 SUPPLY VOLTAGE Figure 26. Supply Current vs. Supply Voltage ...

Page 15

0.6 0.8 1.0 I (mA) DD Figure 32. I Histogram with and 2.50 2.49 2.48 2.47 1µs/DIV Figure ...

Page 16

AD5346/AD5347/AD5348 FUNCTIONAL DESCRIPTION The AD5346/AD5347/AD5348 are octal resistor-string DACs fabricated by a CMOS process with resolutions of 8, 10, and 12 bits, respectively. They are written to using a parallel interface. They operate from single supplies of 2 ...

Page 17

PARALLEL INTERFACE The AD5346/AD5347/AD5348 load their data as a single 8-, 10-, or 12-bit word. Double-Buffered Interface The AD5346/AD5347/AD5348 DACs all have double-buffered interfaces consisting of an input register and a DAC register. DAC data, BUF, and GAIN inputs are ...

Page 18

AD5346/AD5347/AD5348 The bias generator, the output amplifier, the resistor string, and all other associated linear circuitry are all shut down when the power-down mode is activated. However, the contents of the registers are unaffected when in power-down. The time to ...

Page 19

APPLICATIONS INFORMATION TYPICAL APPLICATION CIRCUITS The AD5346/AD5347/AD5348 can be used with a wide range of reference voltages, especially if the reference inputs are configured as unbuffered, in which case the devices offer full, one-quadrant multiplying capability over a reference range ...

Page 20

AD5346/AD5347/AD5348 DECODING MULTIPLE AD5346/AD5347/AD5348s The CS pin on these devices can be used in applications to decode a number of DACs. In this application, all DACs in the system receive the same data and WR pulses, but only the CS ...

Page 21

COARSE AND FINE ADJUSTMENT USING THE AD5346/AD5347/AD5348 Two of the DACs in the AD5346/AD5347/AD5348 can be paired together to form a coarse and fine adjustment function, as shown in Figure 47. As with the window comparator previously described, the description ...

Page 22

AD5346/AD5347/AD5348 Table 9. Overview of AD53xx Parallel Devices Part No. Resolution DNL SINGLES AD5330 8 ±0.25 AD5331 10 ±0.5 AD5340 12 ±1.0 AD5341 12 ±1.0 DUALS AD5332 8 ±0.25 AD5333 10 ±0.5 AD5342 12 ±1.0 AD5343 12 ±1.0 QUADS AD5334 ...

Page 23

OUTLINE DIMENSIONS 0.15 0.05 COPLANARITY PIN 1 INDICATOR 12° MAX 1.00 0.85 0.80 SEATING PLANE 9.80 9.70 9. 4.50 4.40 4. PIN 1 1.20 MAX 0.50 0.27 SEATING 0.20 BSC 0.17 PLANE 0.10 0.09 COMPLIANT TO ...

Page 24

... ORDERING GUIDES Table 11. AD5346 Ordering Guide Model Temperature Range AD5346BRU –40°C to +105°C AD5346BRU-REEL –40°C to +105°C AD5346BRU-REEL7 –40°C to +105°C AD5346BCP –40°C to +105°C AD5346BCP-REEL –40°C to +105°C AD5346BCP-REEL7 –40°C to +105°C Table 12. AD5347 Ordering Guide ...

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