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THS4551 Datasheet Preview

THS4551 Datasheet

Fully-Differential Amplifier

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www.ti.com
SBOS778D – APRIL 2016 – REVISED TTAPHHRSSIL442550552111
SBOS778D – APRIL 2016 – REVISED APRIL 2021
THS4551
Low-Noise, Precision, 150-MHz, Fully Differential Amplifier
1 Features
• Bandwidth: 150 MHz (G = 1 V/V)
• Differential Output Slew Rate: 220 V/µs
• Gain Bandwidth Product: 135 MHz
• Negative Rail Input (NRI),
Rail-to-Rail Output (RRO)
• Wide Output Common-Mode Control Range
• Single-Supply Operating Range: 2.7 V to 5.4 V
• Trimmed-Supply Current: 1.37 mA at 5 V
• 25°C Input Offset: ±175 µV (max)
• Input Offset Voltage Drift: ±1.8 µV/°C (max)
• Differential Input Voltage Noise: 3.3 nV/√ Hz
• HD2: –128 dBc at 2 VPP, 100 kHz
• HD3: –139 dBc at 2 VPP, 100 kHz
• < 50-ns Settling Time: 4-V Step to 0.01%
• 18-Bit Settling Time: 4-V Step, < 500 ns
2 Applications
• 24-Bit, Delta-Sigma (ΔΣ) ADC Drivers
• 16- to 20-Bit, Differential, High-Speed SAR Drivers
• Differential Active Filters
• Differential Transimpedance Amplifiers
• Pin-Compatible Upgrade to the THS4521
(VSSOP-8 only)
1.2 k
270 pF
3 Description
The THS4551 fully differential amplifier offers an
easy interface from single-ended sources to the
differential output required by high-precision analog-
to-digital converters (ADCs). Designed for exceptional
dc accuracy, low noise, and robust capacitive load
driving, this device is well suited for data acquisition
systems where high precision is required along with
the best signal-to-noise ratio (SNR) and spurious-free
dynamic range (SFDR) through the amplifier and ADC
combination.
The THS4551 features the negative rail input required
when interfacing a dc-coupled, ground-centered,
source signal to a single-supply differential input ADC.
Very low dc error and drift terms support the emerging
16- to 20-bit successive-approximation register (SAR)
input requirements. A wide-range output common-
mode control supports the ADC running from 1.8-
V to 5-V supplies with ADC common-mode input
requirements from 0.7 V to greater than 3.0 V.
The THS4551 device is characterized for operation
over the wide temperature range of –40°C to +125°C,
and is available in 8-pin VSSOP, 16-pin VQFN, and
10-pin WQFN packages.
PART NUMBER
THS4551
Device Information(1)
PACKAGE
BODY SIZE (NOM)
VSSOP (8)
3.00 mm × 3.00 mm
WQFN (10)
2.00 mm × 2.00 mm
VQFN (16)
3.00 mm × 3.00 mm
(1) See the orderable addendum at the end of the data sheet for
all available packages.
1.2 k
470 pF
1.2 k
330
1 nF
330
3V
+
±
5
THS4551
5
10
22 nF
AINN
ADS127L01
AINP
10
270 pF
1.2 k
Copyright © 2016, Texas Instruments Incorporated
Simplified Schematic: Gain of 1 V/V, Single-Ended Input to Differential Output, 500-kHz, Multiple
Feedback Filter Interface to the ADS127L01
CopyrighAtn©I2M0P21OTReTxaAsNInTsNtruOmTeInCtsEInactotrhpeoreatnedd of this data sheet addresses availability, warranty, changes, use iSnusbamfeittyD-corcituicmael anpt pFleiceadtbioancsk,
1
intellectual property matters and other important disclaimers. PRODUCTION DATA.
Product Folder Links: THS4551




etcTI

THS4551 Datasheet Preview

THS4551 Datasheet

Fully-Differential Amplifier

No Preview Available !

THS4551
SBOS778D – APRIL 2016 – REVISED APRIL 2021
www.ti.com
Table of Contents
1 Features............................................................................1
2 Applications..................................................................... 1
3 Description.......................................................................1
4 Revision History.............................................................. 2
5 Companion Devices........................................................ 4
6 Pin Configuration and Functions...................................5
7 Specifications.................................................................. 6
7.1 Absolute Maximum Ratings........................................ 6
7.2 ESD Ratings............................................................... 6
7.3 Recommended Operating Conditions.........................6
7.4 Thermal Information....................................................6
7.5 Electrical Characteristics: (VS+) – (VS–) = 5 V.............7
7.6 Electrical Characteristics: (VS+) – (VS–) = 3 V...........10
7.7 Typical Characteristics: (VS+) – (VS–) = 5 V.............. 13
7.8 Typical Characteristics: (VS+) – (VS–) = 3 V.............. 16
7.9 Typical Characteristics: 3-V to 5-V Supply Range.... 19
8 Parameter Measurement Information.......................... 23
8.1 Example Characterization Circuits............................23
8.2 Output Interface Circuit for DC-Coupled
Differential Testing.......................................................25
8.3 Output Common-Mode Measurements.....................25
8.4 Differential Amplifier Noise Measurements...............26
8.5 Balanced Split-Supply Versus Single-Supply
Characterization.......................................................... 26
8.6 Simulated Characterization Curves.......................... 26
8.7 Terminology and Application Assumptions............... 27
9 Detailed Description......................................................28
9.1 Overview................................................................... 28
9.2 Functional Block Diagram......................................... 28
9.3 Feature Description...................................................29
9.4 Device Functional Modes..........................................38
10 Application and Implementation................................ 42
10.1 Application Information........................................... 42
10.2 Typical Applications................................................ 49
11 Power Supply Recommendations..............................55
11.1 Thermal Analysis.....................................................56
12 Layout...........................................................................57
12.1 Layout Guidelines................................................... 57
12.2 Layout Example...................................................... 58
12.3 EVM Board..............................................................59
13 Device and Documentation Support..........................61
13.1 Device Support....................................................... 61
13.2 Documentation Support.......................................... 63
13.3 Receiving Notification of Documentation Updates..63
13.4 Support Resources................................................. 64
13.5 Trademarks............................................................. 64
13.6 Electrostatic Discharge Caution..............................64
13.7 Glossary..................................................................64
14 Mechanical, Packaging, and Orderable
Information.................................................................... 64
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (July 2017) to Revision D (April 2021)
Page
• Updated the numbering format for tables, figures, and cross-references throughout the document..................1
• Added the Device Information table to the Description section.......................................................................... 1
• Moved the Low-Power ADCs Supported by the THS4551 table to the Device Comparison section................. 4
• Removed the IIB input bias current (positive current out-of-node) minimum limits in the Electrical
Characteristics: (VS+) – (VS–) = 5 V section........................................................................................................7
• Removed the IIB input bias current (positive current out-of-node) minimum limits in the Electrical
Characteristics: (VS+) – (VS–) = 3 V section......................................................................................................10
Changes from Revision B (November 2016) to Revision C (July 2017)
Page
• Changed 47k Ohms , 1.3 pF to 150k Ohms , 7 pF in the Section 7.6 table ...................................................... 1
Changes from Revision A (August 2016) to Revision B (November 2016)
Page
• Added second row and footnote 2 to Voltage parameter of Absolute Maximum Ratings table.......................... 6
• Added package differences and footnote 3 to ESD Ratings table......................................................................6
• Changed footnotes 1 and 2 in 5-V Electrical Characteristics table.....................................................................7
• Added test conditions to AOL parameter in 5-V Electrical Characteristics table................................................. 7
• Changed Input offset voltage drift parameter .................................................................................................... 7
• Changed IIB parameter minimum and maximum specifications in last three rows ............................................ 7
• Changed Input bias current drift parameter test conditions and specifications ................................................. 7
• Added Input offset current drift parameter test conditions, minimum and maximum specifications, and test
level value to second row................................................................................................................................... 7
• Changed test conditions of Common-mode input, low and Common-mode input, high parameters .................7
• Changed test conditions of Continuous output current and Linear output current parameters ......................... 7
2
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Description Fully-Differential Amplifier
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