THS4541-Q1 Automotive High-Speed Differential I/O Amplifier |

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Automotive High-Speed Differential I/O Amplifier



The THS4541-Q1 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 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 is characterized for operation over the wide temperature range of –40°C to +125°C and is available in a 16-pin VQFN package both with and without wettable flanks. The package with wettable flanks eases post-assembly visual inspection and is available as the THS4541W-Q1.


  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Bandwidth: 500 MHz (G = 2 V/V)
  • Gain bandwidth product: 850 MHz
  • Slew rate: 1500 V/µs
  • HD2: –95 dBc at 10 MHz (2 VPP, RL = 500 Ω)
  • HD3: –90 dBc at 10 MHz (2 VPP, RL = 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)
  • 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)

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Part number Order Number of channels (#) Total supply voltage (Min) (+5V=5, +/-5V=10) Total supply voltage (Max) (+5V=5, +/-5V=10) BW @ Acl (MHz) Acl, min spec gain (V/V) Slew rate (Typ) (V/us) Vn at flatband (Typ) (nV/rtHz) Iq per channel (Typ) (mA) Rail-to-rail Vos (offset voltage @ 25 C) (Max) (mV) Operating temperature range (C) Package Group Output current (Typ) (mA) 2nd harmonic (dBc) 3rd harmonic (dBc) Package size: mm2:W x L (PKG) GBW (Typ) (MHz) Input bias current (Max) (pA) @ MHz CMRR (Typ) (dB)
THS4541-Q1 Order now 1     2.7     5.4     620     1     1500     2.2     10.1     In to V-
0.45     -40 to 125     VQFN | 16     100     95     90     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     850     13000000     10     100