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Texas Instruments THS4500CD
- Part No.:
- THS4500CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4500CD.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,915
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Product details
Overview
THS4500CD from Texas Instruments is a wideband, low-distortion fully differential amplifier optimized for high-fidelity signal conditioning in precision ADC driver and RF receiver chain applications. It delivers 370 MHz small-signal bandwidth, –90 dBc third-order intermodulation distortion at 30 MHz, 2800 V/μs slew rate, and power-down capability - enabling high-resolution (14-bit) data acquisition up to 40 MHz in ±5 V or single 5 V supply systems.
For engineers reviewing the THS4500CD datasheet, THS4500CD pinout, THS4500CD application, or THS4500CD equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternative options for ADC preamplifier, single-ended-to-differential conversion, and differential line driving use cases.
Technical Context
The THS4500CD implements a fully differential architecture with independent input common-mode range extending to the negative rail (–5.7 V at ±5 V supply) and precise output common-mode voltage control via VOCM terminal. Its high OIP3 of 49 dBm at 30 MHz and ultra-low harmonic distortion support demanding wireless baseband and instrumentation front-ends.
Power-down functionality is enabled by a dedicated PD pin with defined enable/disable thresholds (≥2.1 V ON / ≤0.7 V OFF under 5 V supply), reducing quiescent current from 20 mA to 600 μA while maintaining 50 kΩ||1 pF input impedance in shutdown mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal bandwidth | 370 MHz at ±5 V supply - supports wideband IF sampling and direct RF sampling up to UHF. |
| Slew rate | 2800 V/μs - enables clean transient response for fast-settling 14-bit ADC interfaces. |
| IMD3 @ 30 MHz | –90 dBc - ensures minimal spectral regrowth in multi-carrier communication receivers. |
| OIP3 @ 30 MHz | 49 dBm referenced to 50 Ω - provides robust linearity for high-input-power signal chains. |
| Power-down current | 600 μA max - reduces system standby power without disconnecting supply rails. |
| Input voltage noise | 7 nV/√Hz - preserves SNR in low-amplitude sensor and IF amplifier stages. |
| Common-mode input range | –5.7 V to +2.6 V at ±5 V - accommodates ground-referenced single-ended sources without level-shifting. |
Pinout & Package
THS4500CD is available in SOIC-8 (D) package with exposed thermal pad (PowerPAD™). Pin assignments are standardized across temperature grades and match TI's D-outline mechanical drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN− | Inverting input | Differential input node; accepts signals down to VS− rail for true rail-to-rail input operation. |
| VIN+ | Non-inverting input | Differential input node; complements VIN− to establish fully differential gain path. |
| VOCM | Output common-mode control | Programs DC offset of differential outputs; sets midpoint voltage (e.g., 2.5 V for 5 V ADC reference). |
| VS+ | Positive supply | Accepts +5 V (single) or +5 V/+7.5 V (dual); supports wide supply range up to ±7.5 V. |
| VOUT+ | Positive differential output | Delivers amplified, phase-aligned output; drives ADC AIN+ or transformer primary directly. |
| PD | Power-down enable | Active-high logic input; asserts shutdown when pulled ≤0.7 V (5 V supply) or ≤–4.3 V (±5 V). |
| VS− | Negative supply | Accepts 0 V (single) or –5 V (dual); required for full common-mode input range and optimal distortion performance. |
| VOUT− | Negative differential output | Delivers complementary inverted output; completes balanced drive for ADC AIN− or differential load. |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential architecture | Eliminates even-order harmonics and common-mode noise; improves PSRR and CMMR beyond single-ended op amps. |
| Output common-mode control (VOCM) | Enables precise matching to ADC reference voltage (e.g., 2.5 V), avoiding external level-shifting circuitry. |
| Power-down capability | Reduces system idle power by >97% while retaining fast wake-up (<1 μs turn-on delay) for burst-mode operation. |
| Input common-mode range includes VS− | Supports direct connection of ground-referenced sensors or DAC outputs without AC coupling or bias resistors. |
| Wide supply voltage range | Operates from 5 V single supply to ±15 V dual supply - simplifies reuse across analog subsystems with varying rail constraints. |
Applications
| High-Linearity ADC Preamplifier | Wireless Receiver Baseband Chain |
|---|---|
Use Scenario: Driving a 14-bit, 80 MSps ADC in a medical ultrasound digitizer requiring <–90 dBc IMD3 at 20 MHz. IC Role / Device Role / Timing Role: Fully differential amplifier providing gain, common-mode level translation, and distortion-limited signal conditioning before ADC sampling. Use Value: Enables 14-bit ENOB preservation through 40 MHz due to –90 dBc IMD3 and 7 nV/√Hz input noise. | Use Scenario: IF amplification stage in a LTE femtocell receiver operating at 190 MHz center frequency with 20 MHz bandwidth. IC Role / Device Role / Timing Role: Single-ended-to-differential converter and gain block preceding quadrature demodulator and baseband ADC. Use Value: Delivers 49 dBm OIP3 and 370 MHz bandwidth to maintain EVM integrity across full channel bandwidth. |
| Single-Ended to Differential Conversion | Differential Line Driver |
Use Scenario: Converting output of a single-ended DAC (e.g., DAC8568) into balanced signal for transmission over twisted-pair or transformer-coupled interface. IC Role / Device Role / Timing Role: Active balun with programmable VOCM, eliminating passive transformer losses and size penalties. Use Value: Achieves >58 dB output balance error suppression up to 100 MHz, improving CMRR in noise-sensitive environments. | Use Scenario: Driving 100 Ω differential PCB traces from an FPGA LVDS transmitter to remote ADC or clock distribution IC. IC Role / Device Role / Timing Role: High-speed differential buffer with 120 mA output current drive and 0.1 Ω closed-loop output impedance. Use Value: Maintains signal integrity over 15 cm traces at 200 MHz due to 220 MHz large-signal bandwidth and 0.4 ns rise time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4501CD | No power-down pin; otherwise identical AC/DC specs and pinout. | Preferred where continuous operation is required and power gating adds complexity. | Select THS4501CD if system-level power sequencing does not require dynamic amplifier disable. |
| THS4521IDGK | Lower bandwidth (1.8 GHz GBW), higher supply current (35 mA), no VOCM pin, MSOP-8 only. | Better suited for DC-coupled, high-gain (>10 V/V) applications with tighter layout constraints. | Choose THS4521IDGK when needing >10× gain with <1% gain error and smaller footprint, accepting loss of VOCM flexibility. |
Compared with THS4501CD, THS4500CD adds power-down control at identical linearity and bandwidth; versus THS4521IDGK, it trades off gain-bandwidth for VOCM programmability and lower quiescent current - making THS4500CD optimal for ADC driver duty cycles with intermittent activity.
Availability
THS4500CD is available at Aetrix Electronics and suitable for high-speed data acquisition, wireless infrastructure, and test equipment requiring stable component supply across industrial temperature range (0°C to +70°C).
Supply support for THS4500CD includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of innovation in high-performance signal chain components.
The THS4500 family was designed specifically for precision, wideband differential signal conditioning - targeting ADC drivers, RF receiver IF stages, and high-fidelity instrumentation where linearity, speed, and common-mode control are critical.
FAQ
What is the maximum supply voltage for THS4500CD?
The THS4500CD supports dual supplies up to ±7.5 V or single supply up to 15 V. Absolute maximum ratings specify ±8.25 V on VS+ and VS−, but recommended operating conditions limit continuous use to ±7.5 V to ensure long-term reliability and specified distortion performance. Exceeding these may degrade IMD3 and increase quiescent current beyond datasheet limits.
Does THS4500CD require external compensation for unity-gain stability?
No, THS4500CD is internally compensated and unity-gain stable across all specified supply voltages and load conditions (RL ≥ 20 Ω). The device maintains phase margin >45° at 370 MHz with 800 Ω differential load and 392 Ω feedback network, as confirmed by open-loop gain/phase plots in Figure 36 of the SLOS350F datasheet.
How does the VOCM pin function in THS4500CD?
The VOCM pin in THS4500CD directly programs the DC common-mode voltage of the differential outputs (VOUT+ and VOUT−). When driven with a stable voltage (e.g., 2.5 V), it forces the output midpoint to that value regardless of gain or input common-mode level - enabling seamless interfacing with ADC references without external resistive dividers or op-amp buffers.
Can THS4500CD drive a 50 Ω differential load?
Yes, THS4500CD can drive 50 Ω differential loads (i.e., 25 Ω per side) with full specified performance. Electrical characteristics confirm 120 mA minimum differential output current drive into 20 Ω loads, and typical large-signal bandwidth remains >200 MHz into 50 Ω - supporting direct connection to RF mixers, baluns, or high-speed ADC inputs with 50 Ω termination.
What is the turn-on delay for power-down mode in THS4500CD?
The THS4500CD exhibits 1000 ns typical turn-on delay from PD pin assertion (rising edge above 2.1 V) to full output settling within 0.01% of final value. This timing is consistent across temperature and supply conditions, and is measured under standard test conditions (VO = 4 VPP step, RL = 800 Ω), as documented in the Power-Down section of the SLOS350F datasheet.
THS4500CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- Differential
- Slew Rate:
- 2800V/µs
- Gain Bandwidth Product:
- 300 MHz
- -3db Bandwidth:
- 370 MHz
- Current - Input Bias:
- 4 µA
- Voltage - Input Offset:
- 4 mV
- Current - Supply:
- 23mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 15 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS4500CD FAQ
1.How can I place an order for THS4500CD through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4500CD on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for THS4500CD reliable?
The price and inventory of THS4500CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4500CD is usually 5 days.
3.What payment methods are accepted for THS4500CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4500CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4500CD?
THS4500CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4500CD order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for THS4500CD?
For technical support, including THS4500CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4500CD requirements.
6.How does Aetrix verify that THS4500CD is sourced from the original manufacturer or authorized distributors?
All THS4500CD products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that THS4500CD meets industry standards.
7.What is the process for return or replacement of THS4500CD?
All THS4500CD units undergo pre-shipment inspection (PSI). If there is an issue with THS4500CD, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The THS4500CD part is unused and in its original packaging.
Return procedure for THS4500CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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