THS4541-Q1 Datasheet, PDF (1/60 Pages) Texas Instruments – 850-MHz Fully Differential Amplifier

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
THS4541-Q1
SLOS930A – NOVEMBER 2015 – REVISED NOVEMBER 2015
THS4541-Q1 Negative Rail Input, Rail-to-Rail Output, Precision, 850-MHz
Fully Differential Amplifier
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to
+125°C Ambient Operating Temperature
Range
– Device HBM Classification Level 2
– Device CDM Classification Level C6
• Fully Differential Amplifier (FDA) Architecture
• Bandwidth: 500 MHz (G = 2 V/V)
• Gain Bandwidth Product: 850 MHz
• Slew Rate: 1500 V/µs
• HD₂: –95 dBc at 10 MHz (2 V_PP, R_L = 500 Ω)
• HD₃: –90 dBc at 10 MHz (2 V_PP, R_L = 500 Ω)
• Input Voltage Noise: 2.2 nV/Hz (f > 100 kHz)
• Low offset drift: ±0.5 µV/°C (typ)
• Negative Rail Input (NRI)
• Rail-to-Rail Output (RRO)
• Robust Operation for Rload ≥ 50 Ω
• Output Common-Mode Control
• Power Supply:
– Single-Supply Voltage Range: 2.7 V to 5.4 V
– Split-Supply Voltage Range: ±1.35 V to ±2.7 V
– Quiescent Current: 10.1 mA (5-V Supply)
• Power-Down Capability: 2 µA (typ)
2 Applications
• Low-Power, High-Performance ADC Driver
– SAR, ΔΣ, and Pipeline
• Low Power, High Performance (DC or AC
Coupled)
– Single-Ended to Differential Amplifier
– Differential to Differential Amplifier
• Differential Active Filters
• Differential Transimpedance for DAC Outputs
• DC- or AC-Coupled Interface to the ADC3xxx
Family of Low-Power, High-Performance ADCs
• Pin-Compatible to ADA4932-1 (VQFN-16)
3 Description
The THS4541-Q1 device is a low-power, voltage-
feedback, fully differential amplifier (FDA) with an
input common-mode range below the negative rail,
and rail-to-rail output. Designed for low-power data
acquisition systems where high density is critical in a
high-performance analog-to-digital converter (ADC) or
digital-to-analog converter (DAC) interface design.
The THS4541-Q1 device features the negative-rail
input required when interfacing a DC-coupled,
ground-centered, source signal. This negative-rail
input, with rail-to-rail output, allows for easy interface
between single-ended, ground-referenced, bipolar
signal sources and a wide variety of successive
approximation register (SAR), delta-sigma (ΔΣ), or
pipeline ADCs using only a single 2.7-V to 5.4-V
power supply.
The THS4541-Q1 device is characterized for
operation over the wide temperature range of –40°C
to +125°C available in a 16-pin VQFN package.
Simplified Schematic
50- Input Match,
Gain of 2 V/V from Rt,
Single-Ended Source to
Differential Output
THS4541 Wideband,
Fully-Differential Amplifier
Rf1
402
50-
Source
C1
Rg1
100 nF ₁₉₁
Rt
60.2
Vocm
Rg2
221
Vcc
±
+
FDA
±
+
PD
Vcc
Rload
500
Output
Measurement
Point
C2
100 nF
Rf2
402
1
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
THS4541-Q1
VQFN (16)
3.00 mm × 3.00 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
Single to Differential Gain of 2, 2-V_PP Output
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
0.1
HD2
HD3
1
10
Frequency (MHz)
50
D013
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.