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AD8475ACPZ-R7

Description
Differential Amplifiers Prec Selectable Gain Funnel
CategoryAnalog mixed-signal IC    Amplifier circuit   
File Size584KB,24 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
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AD8475ACPZ-R7 Overview

Differential Amplifiers Prec Selectable Gain Funnel

AD8475ACPZ-R7 Parametric

Parameter NameAttribute value
Brand NameAnalog Devices Inc
Is it lead-free?Contains lead
Is it Rohs certified?conform to
MakerADI
Parts packaging codeSON
package instructionHVQCCN, LCC16,.12SQ,20
Contacts16
Manufacturer packaging codeCP-16-22
Reach Compliance Codecompliant
ECCN codeEAR99
Samacsys DescriptionDifferential Amplifiers Funnel Amp/Next Gen AD8275
Base Number Matches1
Data Sheet
FEATURES
Precision attenuation: G = 0.4, G = 0.8
Fully differential or single-ended input/output
Differential output designed to drive precision ADCs
Drives switched capacitor and Σ-Δ ADCs
Rail-to-rail output
VOCM pin adjusts output common-mode voltage
Robust overvoltage protection up to ±15 V (V
S
= +5 V)
Single supply: 3 V to 10 V
Dual supplies: ±1.5 V to ±5 V
High performance
Suited for driving 18-bit converters up to 4 MSPS
10 nV/√Hz output noise
3 ppm/°C gain drift
500 μV maximum output offset
50 V/μs slew rate
Low power: 3.2 mA supply current
Precision, Selectable Gain,
Fully Differential Funnel Amplifier
AD8475
FUNCTIONAL BLOCK DIAGRAMS
16 +IN 0.4x
15 –V
S
13 –V
S
1kΩ
1.25kΩ
+IN 0.8x 2
–IN 0.8x 3
1.25kΩ
–IN 0.4x 4
1.25kΩ
1.25kΩ
+IN 0.4x 1
14 –V
S
12 NC
11 –OUT
AD8475
10 +OUT
1kΩ
9
VOCM
–IN 0.4x 5
+V
S
6
+V
S
7
+V
S
8
NC = NO CONNECT
+IN 0.8x
ADC drivers
Differential instrumentation amplifier building blocks
Single-ended-to-differential converters
+IN 0.4x
APPLICATIONS
Figure 1. 16-Lead LFCSP
–OUT
–V
S
10
9
8
7
NC
1kΩ
1.25kΩ
1.25kΩ
1.25kΩ
1.25kΩ
GENERAL DESCRIPTION
The
AD8475
is a fully differential, attenuating amplifier with
integrated precision gain resistors. It provides precision attenuation
(by 0.4 or 0.8), common-mode level shifting, and single-ended-to-
differential conversion along with input overvoltage protection.
Power dissipation on a single 5 V supply is only 16 mW.
The
AD8475
is a simple to use, fully integrated precision gain
block, designed to process signal levels of up to ±10 V on a single
supply. It provides a complete interface to make industrial level
signals directly compatible with the differential input ranges of low
voltage high performance 16-bit or 18-bit single-supply successive
approximation (SAR) analog-to-digital converters (ADCs).
The
AD8475
comes with two standard pin-selectable gain
options: 0.4 and 0.8. The gain of the part is set by driving the
input pin corresponding to the appropriate gain.
The
AD8475
also provides overvoltage protection from large
industrial input voltages up to ±15 V while operating on a single
5 V supply. The VOCM pin adjusts the output voltage common
mode for precision level shifting, to match the ADC’s input range
and maximize dynamic range.
AD8475
1kΩ
–IN 0.8x
1
–IN 0.4x
2
+V
S 3
VOCM
4
+OUT
5
6
NC = NO CONNECT
Figure 2. 10-Lead MSOP
The
AD8475
works extremely well with SAR, Σ-Δ, and pipeline
converters. The high current output stage of the part allows it to
drive the switched capacitor front-end circuits of many ADCs with
minimal error.
Unlike many differential drivers in the market, the
AD8475
is a
high precision amplifier. With 500 µV maximum output offset,
10 nV/√Hz output noise, and −112 dB THD + N, the
AD8475
pairs well with high accuracy converters. Considering its low power
consumption and high precision, the slew-enhanced
AD8475
has
excellent speed, settling to 18-bit precision for 4 MSPS acquisition.
The
AD8475
is available in a space-saving 16-lead 3 mm × 3 mm
LFCSP package and a 10-lead MSOP package. It is fully specified
over the −40°C to +85°C temperature range.
Rev. D
Document Feedback
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2010–2017 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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.
09432-002
09432-001

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Description Differential Amplifiers Prec Selectable Gain Funnel Differential Amplifiers Prec Selectable Gain Funnel Differential Amplifiers Prec Selectable Gain Funnel Amplifier IC Development Tools AD8475 EVAL BRD Differential Amplifiers Prec Selectable Gain Funnel Differential Amplifiers Prec Selectable Gain Funnel
Brand Name Analog Devices Inc Analog Devices Inc Analog Devices Inc - Analog Devices Inc Analog Devices Inc
Is it lead-free? Contains lead Contains lead Contains lead - Contains lead Contains lead
Is it Rohs certified? conform to conform to conform to - conform to conform to
Maker ADI ADI ADI - ADI ADI
Parts packaging code SON TSSOP TSSOP - TSSOP SON
package instruction HVQCCN, LCC16,.12SQ,20 TSSOP, TSSOP, TSSOP10,.19,20 - TSSOP, TSSOP10,.19,20 HVQCCN, LCC16,.12SQ,20
Contacts 16 10 10 - 10 16
Manufacturer packaging code CP-16-22 RM-10 RM-10 - RM-10 CP-16-22
Reach Compliance Code compliant compliant compliant - compliant compliant
ECCN code EAR99 EAR99 EAR99 - EAR99 EAR99
Amplifier type - OPERATIONAL AMPLIFIER OPERATIONAL AMPLIFIER - OPERATIONAL AMPLIFIER OPERATIONAL AMPLIFIER
Nominal Common Mode Rejection Ratio - 86 dB 76 dB - 76 dB 76 dB
Maximum input offset voltage - 200 µV 500 µV - 500 µV 500 µV
JESD-30 code - S-PDSO-G10 S-PDSO-G10 - S-PDSO-G10 S-XQCC-N16
JESD-609 code - e3 e3 - e3 e3
length - 3 mm 3 mm - 3 mm 3 mm
Humidity sensitivity level - 1 1 - 1 1
Number of functions - 1 1 - 1 1
Number of terminals - 10 10 - 10 16
Maximum operating temperature - 85 °C 85 °C - 85 °C 85 °C
Minimum operating temperature - -40 °C -40 °C - -40 °C -40 °C
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY - PLASTIC/EPOXY UNSPECIFIED
encapsulated code - TSSOP TSSOP - TSSOP HVQCCN
Package shape - SQUARE SQUARE - SQUARE SQUARE
Package form - SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, THIN PROFILE, SHRINK PITCH - SMALL OUTLINE, THIN PROFILE, SHRINK PITCH CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius) - 260 260 - 260 260
Certification status - Not Qualified Not Qualified - Not Qualified Not Qualified
Maximum seat height - 1.1 mm 1.1 mm - 1.1 mm 0.8 mm
Nominal slew rate - 50 V/us 50 V/us - 50 V/us 50 V/us
Supply voltage upper limit - 11 V 11 V - 11 V 11 V
Nominal supply voltage (Vsup) - 5 V 5 V - 5 V 5 V
surface mount - YES YES - YES YES
Temperature level - INDUSTRIAL INDUSTRIAL - INDUSTRIAL INDUSTRIAL
Terminal surface - Matte Tin (Sn) Matte Tin (Sn) - Matte Tin (Sn) Matte Tin (Sn)
Terminal form - GULL WING GULL WING - GULL WING NO LEAD
Terminal pitch - 0.5 mm 0.5 mm - 0.5 mm 0.5 mm
Terminal location - DUAL DUAL - DUAL QUAD
Maximum time at peak reflow temperature - 30 30 - 30 30
width - 3 mm 3 mm - 3 mm 3 mm
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