THS4141CD - 160MHz Fully Differential Amplifier | Texas Instruments
MPN: THS4141CD ✓ ActiveTHS4141CD Overview
A fully differential amplifier is an amplifier whose input and output signals are represented by pairs of complementary voltages. It belongs to the operational-amplifier hierarchy, where it provides differential input, differential output, common-mode rejection, and balanced signal conversion. This topology helps downstream circuits reject common-mode interference and is particularly useful when driving analog-to-digital converters, converting single-ended sources into differential signals, and processing signals through balanced analog chains.
The THS4141CD combines a 160 MHz -3 dB bandwidth with a high 450 V/us slew rate. The manufacturer also identifies a 6.5 nV/Hz input-referred noise specification and -79 dB third-harmonic distortion at 1 MHz. These characteristics support high-frequency signal fidelity when the device operates with the circuit conditions and supply voltages specified by the manufacturer. Its balanced outputs are designed to reject common-mode noise and preserve signal integrity across differential signal paths.
The THS414x family uses a true fully differential signal path from input to output. This architecture avoids relying on an external subtractor to create the balanced output. A fully differential path can simplify ADC-interface layouts by keeping the input and output signal paths symmetrical and by reducing susceptibility to common-mode noise when correctly interfaced with the receiving circuit.
Typical uses include high-speed differential ADC drivers, single-ended-to-differential conversion, differential antialiasing, and communications or instrumentation signal chains. The 160 MHz bandwidth and 450 V/us slew rate make it suitable for systems that need to preserve large-amplitude, rapidly changing waveform components rather than only low-frequency instrumentation signals.
Circuit implementation should follow the manufacturer datasheet for supply decoupling, output balancing, gain configuration, and input common-mode limits. Because the device is a high-speed amplifier, short feedback traces, symmetric differential routing, careful grounding, and adequate bypass capacitance are important for maintaining high-frequency performance and limiting parasitic feedback.
This page combines the manufacturer specifications with application guidance, comparison criteria, and design-focused information for engineers evaluating the THS4141CD. It also identifies the limitations that matter during replacement decisions, including temperature grade, package option, bandwidth, noise, slew rate, and fully differential pin compatibility.
Drop-in alternatives for THS4141CD — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
THS4141ID
✅ Drop-In📋 Reference alternative (not in catalog)
THS4140CD
✅ Drop-In📋 Reference alternative (not in catalog)
THS4141CD Maximum Ratings & Electrical Characteristics
| Amplifier Type | Fully Differential Input/Output High Slew Rate Amplifier |
| Number of Circuits | 1 circuit |
| -3 dB Bandwidth | 160 MHz at VCC = ±15 V |
| Slew Rate | 450 V/us |
| Input-Referred Noise | 6.5 nV/Hz |
| Third-Harmonic Distortion | -79 dB at 1 MHz |
| Input Architecture | Differential input |
| Output Architecture | Differential output |
| Common-Mode Noise Rejection | Supported by balanced fully differential architecture |
| Supply Voltage | ±16.5 V maximum per distributor specification listing |
| Total Supply Voltage | 33 V maximum per distributor specification listing |
| Operating Temperature | 0°C to 70°C |
| Package | 8-pin SOIC (D) |
| Mounting Type | Surface mount |
| Process Technology | BiComI complementary bipolar process |
| Differential ADC Driver Application | Supported |
| Differential Antialiasing Application | Supported |
| Single-Ended to Differential Conversion | Supported |
THS4141CD 8-pin soic (d) Pin Configuration Guide
Pin configuration for THS4141CD (8-pin soic (d) package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for THS4141CD.
Refer to the datasheet for full pin configuration.
Typical Applications
THS4141CD is suitable for 6 applications: High-Speed Differential ADC Interface, Single-Ended to Differential Conversion, Differential Antialiasing Stage, Communications Transmitter Driver, Precision Instrumentation Signal Chain, Audio and Low-Distortion Signal Processing.
High-Speed Differential ADC Interface
The THS4141CD is suited to driving high-speed differential analog-to-digital converter inputs because it combines a 160 MHz -3 dB bandwidth with a 450 V/us slew rate. According to the Texas Instruments manufacturer datasheet, its fully differential input and output path supports balanced signal transfer from input to output. Place the amplifier close to the converter, keep the two signal branches geometrically similar, and decouple the supply pins according to the datasheet. The principal benefit is preserved high-frequency signal amplitude and common-mode rejection, although the ADC input range and the amplifier output common-mode limits must be compatible.
Recommended
Single-Ended to Differential Conversion
The THS4141CD can generate complementary differential outputs from a single-ended input when configured according to the Texas Instruments manufacturer datasheet. Its 160 MHz bandwidth provides useful frequency range for active signal conditioning, while the 450 V/us slew rate reduces slew-related distortion on large or fast input transitions. For implementation, use matched feedback components and balance the two output branches to minimize even-order distortion and DC offset differences. This arrangement is useful when a downstream ADC, mixer, or communications block expects balanced signals but the source is single-ended.
Recommended
Differential Antialiasing Stage
The THS4141CD is identified by Texas Instruments as a differential antialiasing amplifier, making it suitable for filtering signals ahead of a high-speed converter. Its 160 MHz -3 dB bandwidth and 450 V/us slew rate support signal paths that must pass high-frequency content without excessive amplitude loss or transition distortion. Use the manufacturer's recommended feedback and balancing network, and verify loop stability for the intended differential gain. Compared with a discrete multi-amplifier implementation, the integrated balanced path can reduce component count while retaining the high-speed performance needed in demanding analog chains.
Recommended
Communications Transmitter Driver
The THS4141CD's 450 V/us slew rate, 160 MHz bandwidth, and -79 dB third-harmonic distortion at 1 MHz make it applicable to balanced communications transmitter paths that require high bandwidth and low added distortion. According to the Texas Instruments manufacturer datasheet, the differential output rejects common-mode noise and supports a true differential signal path. The circuit should be laid out with matched transmission geometry and short feedback connections. Verify the transmitter's input impedance, output common-mode range, and gain requirements before selecting the external feedback network.
Recommended
Precision Instrumentation Signal Chain
The fully differential architecture of the THS4141CD is useful for instrumentation front ends that must amplify a small differential sensor signal while rejecting common-mode interference. Its 6.5 nV/Hz input-referred noise specification and 160 MHz bandwidth support broad-band measurement signals, while the 450 V/us slew rate helps preserve large transient components. The tradeoff is that the CD ordering option is rated only from 0°C to 70°C. For laboratory or industrial equipment operating outside that range, the extended-temperature family option may be more appropriate after pin and gain compatibility checks.
Recommended
Audio and Low-Distortion Signal Processing
The THS4141CD can support balanced audio or other low-distortion signal-processing paths because its manufacturer datasheet specifies -79 dB third-harmonic distortion at 1 MHz. The 160 MHz bandwidth and differential outputs provide ample analog bandwidth for intermediate stages in a balanced chain. However, the wide bandwidth requires careful gain selection to avoid instability and excessive noise amplification. Use the recommended feedback values, maintain symmetric routing, and confirm that downstream converters accept the amplifier's output common-mode voltage and signal amplitude.
Recommended
Recommended Products Summary
Engineering reference data for THS4141CD — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | THS4141ID | THS4140CD |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-SOIC (D) | 8-SOIC (D) | 8-SOIC (D) |
| Device Type | Fully Differential Input/Output High Slew Rate Amplifier | THS4141 family fully differential amplifier | Related THS414x amplifier |
Key Differentiators
- Wideband fully differential signal path (vs THS4140CD)
- High slew rate for large-signal transitions (vs THS4141ID)
- Commercial-temperature option (vs THS4141ID)
Design Notes
Keep the input, feedback, and output paths short and route the two differential branches symmetrically. Place supply-bypass capacitors close to the amplifier pins and use a continuous ground plane beneath the device where the layout permits. For a high-speed differential amplifier, unequal trace lengths and impedances can create output imbalance, add even-order distortion, and reduce common-mode rejection even when the intrinsic amplifier bandwidth is sufficient.
Do not select the CD ordering option solely from its bandwidth and slew rate. The THS4141CD is rated for 0°C to 70°C, so it is unsuitable as a drop-in choice for systems that must operate below 0°C or above 70°C. The THS4141ID is the closer temperature-rated family option. For any substitution, also compare pin assignments, differential gain equations, output common-mode limits, feedback values, and stability at the intended gain.
Configure the THS4141 with the gain and feedback network specified by the manufacturer datasheet. Excessive gain can make a 160 MHz amplifier susceptible to peaking or instability, while an unnecessarily high gain also increases output noise and offset-voltage contribution. After assembly, inspect differential and common-mode output amplitude separately, check the balanced-output relationship, and verify that the output remains within the receiving circuit's common-mode range.
Compliance Information
The verified manufacturer and distributor results do not explicitly state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is recorded as not applicable because the part is not identified as an automotive-qualified ordering option.
