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THS4011CDR Equivalent & Substitute Parts
Part Overview
The THS4011CDR is a voltage feedback amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This single-circuit linear amplifier is designed for applications requiring high-speed signal processing with a gain bandwidth product of 290 MHz and slew rate of 310V/µs. The device operates across a supply voltage range of 9V to 32V and maintains active product status with full RoHS3 compliance. Substitute parts are identified based on matching package type, circuit count, amplifier topology, and electrical performance parameters within acceptable operational ranges.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | Voltage Feedback | — |
| Number of Circuits | 1 | — |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Slew Rate | 310 | V/µs |
| Gain Bandwidth Product | 290 | MHz |
| -3dB Bandwidth | 290 | MHz |
| Current - Input Bias | 2 | µA |
| Voltage - Input Offset | 1 | mV |
| Current - Supply | 7.8 | mA |
| Current - Output / Channel | 110 | mA |
| Voltage - Supply Span (Min) | 9 | V |
| Voltage - Supply Span (Max) | 32 | V |
| Operating Temperature | 0 to 70 | °C |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Product Status | Active | — |
Substitute Part Grouping Explanation
Substitute parts for the THS4011CDR are classified based on the following substitution criteria:
Primary Substitution Criteria:
- Amplifier topology: Voltage feedback architecture
- Package compatibility: 8-SOIC surface mount form factor
- Circuit count: Single circuit configuration
- Electrical performance envelope: Slew rate, gain bandwidth product, and supply voltage range
Grouping Logic:
Group 1 — Direct Package Variant (THS4011CD): Identical electrical specifications and amplifier type; differs only in packaging format (Tube vs. Tape & Reel). Fully interchangeable at the functional level.
Group 2 — Enhanced Performance Substitutes (LM7121IMX/NOPB): Higher slew rate (1300V/µs) and extended operating temperature range (-40°C to 85°C). Supply voltage range expanded to 4.5V minimum. Suitable for applications requiring faster transient response and wider temperature operation.
Group 3 — Video Amplifier Substitutes (AD818ARZ, AD818ARZ-REEL7): Voltage feedback topology with lower -3dB bandwidth (130 MHz) and reduced output current capability (50 mA). Supply voltage range extends to 36V maximum. Packaging variants differ (Tube vs. Cut Tape & Digi-Reel).
Group 4 — General Purpose Amplifier (AD847JRZ-REEL7): General purpose amplifier type with significantly lower gain bandwidth product (50 MHz) and slew rate (300V/µs). Lower input bias current (3.3 µA) and reduced supply current (5.3 mA). Suitable for lower-frequency applications with relaxed bandwidth requirements.
Group 5 — Low-Power Voltage Feedback Substitutes (LT1354 Series): Voltage feedback topology with minimal supply current (1 mA) and extremely low input bias current (80 nA). Gain bandwidth product of 12 MHz and slew rate of 400V/µs. Available in multiple packaging formats (Tube, Tape & Reel). Optimized for low-power, low-frequency applications.
Group 6 — High-Speed Low-Power Substitutes (LT1363 Series): Voltage feedback topology with slew rate of 1000V/µs and gain bandwidth product of 70 MHz. Supply current of 6.3 mA and output current of 60 mA. Available in multiple packaging formats. Balanced performance between speed and power consumption.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | GBW (MHz) | -3dB BW (MHz) | Input Bias (µA) | Supply Current (mA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| THS4011CDR | Texas Instruments | Voltage Feedback | 310 | 290 | 290 | 2 | 7.8 | 110 | 9 | 32 | 0 to 70 | 8-SOIC TR |
| THS4011CD | Texas Instruments | Voltage Feedback | 310 | 290 | 290 | 2 | 7.8 | 110 | 9 | 32 | 0 to 70 | 8-SOIC Tube |
| LM7121IMX/NOPB | Texas Instruments | Voltage Feedback | 1300 | 175 | 235 | 5.2 | 5.3 | — | 4.5 | 33 | -40 to 85 | 8-SOIC CT |
| AD818ARZ | Analog Devices Inc. | Voltage Feedback | 500 | — | 130 | — | 7 | 50 | 5 to ±2.5 | 36 to ±18 | 0 to 70 | 8-SOIC Tube |
| AD818ARZ-REEL7 | Analog Devices Inc. | Voltage Feedback | 500 | — | 130 | — | 7 | 50 | 5 to ±2.5 | 36 to ±18 | 0 to 70 | 8-SOIC CT |
| AD847JRZ-REEL7 | Analog Devices Inc. | General Purpose | 300 | 50 | — | 3.3 | 5.3 | 32 | 9 | 36 | 0 to 70 | 8-SOIC CT |
| LT1354CS8#PBF | Analog Devices Inc. | Voltage Feedback | 400 | 12 | — | 0.08 | 1 | 30 | 5 | 30 | 0 to 70 | 8-SO Tube |
| LT1354CS8#TRPBF | Analog Devices Inc. | Voltage Feedback | 400 | 12 | — | 0.08 | 1 | 30 | 5 | 30 | 0 to 70 | 8-SO TR |
| LT1354IS8#PBF | Analog Devices Inc. | Voltage Feedback | 400 | 12 | — | 0.08 | 1 | 30 | 5 | 30 | -40 to 85 | 8-SO Tube |
| LT1363CS8#PBF | Analog Devices Inc. | Voltage Feedback | 1000 | 70 | — | 0.6 | 6.3 | 60 | 5 | 36 | 0 to 70 | 8-SO Tube |
| LT1363CS8#TRPBF | Analog Devices Inc. | Voltage Feedback | 1000 | 70 | — | 0.6 | 6.3 | 60 | 5 | 36 | 0 to 70 | 8-SO CT |
Engineering Selection Recommendations
For Direct Replacement (Identical Electrical Performance): Select THS4011CD when packaging format change from Tape & Reel to Tube is acceptable. Both devices maintain identical electrical specifications, slew rate, bandwidth, and supply current characteristics. Both are Active status products with ROHS3 compliance.
For Extended Temperature Operation: Select LM7121IMX/NOPB when operating temperature range must extend to -40°C to 85°C. This device provides significantly higher slew rate (1300V/µs) and lower minimum supply voltage (4.5V). Trade-off: reduced gain bandwidth product (175 MHz) and -3dB bandwidth (235 MHz) compared to THS4011CDR.
For Video and High-Frequency Applications: Select AD818ARZ or AD818ARZ-REEL7 when video amplification or applications requiring lower -3dB bandwidth (130 MHz) are acceptable. These devices support extended supply voltage to 36V maximum and offer packaging flexibility. Output current is reduced to 50 mA.
For Low-Frequency, Low-Power Applications: Select LT1354 series (CS8#PBF, CS8#TRPBF, or IS8#PBF) when supply current minimization (1 mA) and extremely low input bias current (80 nA) are critical. These devices are suitable for battery-powered or low-power instrumentation. Gain bandwidth product is limited to 12 MHz. LT1354IS8#PBF extends operating temperature to -40°C to 85°C.
For Balanced High-Speed and Low-Power Performance: Select LT1363 series (CS8#PBF or CS8#TRPBF) when both high slew rate (1000V/µs) and moderate power consumption (6.3 mA) are required. Gain bandwidth product of 70 MHz provides mid-range frequency performance. Supply voltage range extends to 36V maximum.
For General-Purpose Lower-Frequency Applications: Select AD847JRZ-REEL7 only when gain bandwidth product of 50 MHz and lower slew rate (300V/µs) meet application requirements. This general-purpose amplifier offers reduced input bias current (3.3 µA) and lower supply current (5.3 mA).
All substitute parts maintain Active product status and ROHS3 compliance. Selection should be based on specific application requirements for bandwidth, slew rate, supply voltage range, operating temperature, and power consumption.
Frequently Asked Questions (FAQ)
Q: Can THS4011CD be used as a direct replacement for THS4011CDR?
A: Yes. Both devices are electrically identical with matching slew rate (310V/µs), gain bandwidth product (290 MHz), supply current (7.8 mA), and operating temperature range (0°C to 70°C). The only difference is packaging format: THS4011CDR is supplied in Tape & Reel, while THS4011CD is supplied in Tube. Both are 8-SOIC surface mount packages with identical pinout and electrical performance.
Q: What is the primary difference between THS4011CDR and LM7121IMX/NOPB?
A: LM7121IMX/NOPB offers significantly higher slew rate (1300V/µs vs. 310V/µs) and extended operating temperature range (-40°C to 85°C vs. 0°C to 70°C). However, it has lower gain bandwidth product (175 MHz vs. 290 MHz) and -3dB bandwidth (235 MHz vs. 290 MHz). LM7121IMX/NOPB also supports lower minimum supply voltage (4.5V vs. 9V). Selection depends on whether higher slew rate and temperature range are more critical than bandwidth performance.
Q: Are the LT1354 and LT1363 series suitable replacements for THS4011CDR?
A: LT1354 and LT1363 series are voltage feedback amplifiers in 8-SO packages, but they are optimized for different application profiles. LT1354 is designed for ultra-low-power applications with 1 mA supply current and 12 MHz gain bandwidth product. LT1363 offers higher slew rate (1000V/µs) and 70 MHz bandwidth. Both are suitable only if application bandwidth requirements are significantly lower than THS4011CDR's 290 MHz specification. These are not direct performance replacements but rather alternatives for different use cases.
Q: What is the difference between AD818ARZ and AD818ARZ-REEL7?
A: Both devices are electrically identical with matching slew rate (500V/µs), -3dB bandwidth (130 MHz), and supply current (7 mA). The difference is packaging format: AD818ARZ is supplied in Tube, while AD818ARZ-REEL7 is supplied in Cut Tape & Digi-Reel. Both are 8-SOIC surface mount packages. Selection depends on assembly process requirements and tape reel compatibility.
Q: Can I use AD847JRZ-REEL7 as a substitute for THS4011CDR?
A: AD847JRZ-REEL7 is a general-purpose amplifier, not a voltage feedback amplifier optimized for high-speed applications. It has significantly lower gain bandwidth product (50 MHz vs. 290 MHz) and slew rate (300V/µs vs. 310V/µs). Use this device only if application bandwidth requirements are below 50 MHz and high-speed performance is not critical.
Q: What are the supply voltage compatibility considerations?
A: THS4011CDR operates from 9V to 32V. LM7121IMX/NOPB extends the minimum to 4.5V and maximum to 33V. AD818ARZ supports 5V to 36V (single supply) or ±2.5V to ±18V (dual supply). LT1354 series operates from 5V to 30V. LT1363 series operates from 5V to 36V. Verify that the selected substitute's supply voltage range encompasses your application's power supply specifications.
Q: How do I choose between packaging formats (Tube, Tape & Reel, Cut Tape)?
A: Packaging format selection depends on assembly process and volume requirements. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel are suitable for automated pick-and-place assembly. Tube packaging is typically used for manual assembly or lower-volume applications. Electrical performance is identical across packaging formats for the same part number base.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All parts listed in this reference maintain ROHS3 compliance and REACH Unaffected status, meeting environmental and regulatory requirements for commercial and industrial applications.
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