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Home > Products > Integrated Circuits (ICs) > Data Acquisition > Analog to Digital Converters (ADC)

Texas Instruments THS1240CPHP

Name: THS1240CPHP
Brand: Texas Instruments
SKU: THS1240CPHP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: THS1240CPHP

Manufacturer:: Texas Instruments

Category:: Analog to Digital Converters (ADC)

Package:: -

Datasheet:: THS1240CPHP.pdf

Description:: ADC, DELTA-SIGMA, 12-BIT

Quantity:: RFQ Add To RFQ list

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Product details

Overview

THS1240CPHP from Texas Instruments is a 12-bit, 40 MSPS pipelined analog-to-digital converter optimized for IF sampling in communications systems. It features buffered differential analog inputs, on-chip sample-and-hold, internal/external reference support, and 77-dB SFDR at 15.5 MHz - enabling high-fidelity digitization in cable modem receivers and wireless infrastructure.

For engineers reviewing the THS1240CPHP datasheet, THS1240CPHP pinout, THS1240CPHP application, or THS1240CPHP equivalent, this page delivers verified specifications, validated pin functions, confirmed industrial-temperature operation (–40°C to 85°C), and real-world interface guidance for RF-sampling signal chains.

Technical Context

The THS1240CPHP employs a 1-bit-per-stage differential pipeline architecture with digital error correction to guarantee no missing codes across its full operating temperature range. Its analog front-end includes a unity-gain buffer and switched-capacitor S/H stage, terminating differential inputs at 1 kΩ with 120-MHz bandwidth.

Digital outputs are 2s complement format, CMOS-compatible at 3-V or 5-V logic levels, driven by dedicated DRVDD/DRVSS supplies. Clocking supports both differential and AC-coupled single-ended inputs with VDD/2 common-mode bias, and aperture jitter is specified at 1 ps RMS.

Key Specifications

Parameter	Value and Actual Design Meaning
Resolution	12-bit - delivers 4096 discrete output levels with guaranteed no missing codes over –40°C to 85°C.
Sample Rate	40 MSPS - supports Nyquist zones up to 20 MHz; enables direct IF sampling of cable and wireless baseband signals.
SFDR @ f_IN = 15.5 MHz	77 dBc - suppresses spurious content sufficiently for DOCSIS-compliant cable modem receiver designs.
ENOB @ f_IN = 31 MHz	10.4 bits - indicates effective resolution degradation under high-frequency input conditions due to bandwidth and noise limits.
Analog Input Bandwidth	120 MHz - allows wideband IF signals (e.g., 45–750 MHz CATV spectrum downconverted to 36–44 MHz) to be captured with <3 dB attenuation.
Power Consumption	380 mW typical - split across AVDD (110 mA), DVDD (4 mA), and DRVDD (7 mA) rails, enabling thermal-aware PCB layout.
Reference Options	Internal (3.0 V / 2.0 V differential) or external - eliminates need for external reference ICs unless higher precision or temperature stability is required.

Pinout & Package

The THS1240CPHP is housed in a 48-pin HTQFP PowerPAD™ package (PHP), with an exposed copper thermal pad on the underside for enhanced heat dissipation. The package complies with JEDEC MO-153 and requires soldering the thermal pad to a PCB ground plane via ≥9 thermal vias for optimal thermal performance in continuous operation.

Pin/Terminal	Circuit Role	Design Meaning
VIN+, VIN–	Differential analog input	Accepts buffered, terminated 2 V_p-p differential signal centered at VCM; 1-kΩ input resistance enables impedance-matched RF transformer coupling.
CLK+, CLK–	Differential clock input	Supports 40-MHz operation with 12.5-ns minimum pulse width; accepts AC-coupled single-ended or fully differential clock sources with VDD/2 common mode.
D11–D0	Parallel digital output	12-bit 2s complement data bus; outputs valid 13 ns after CLK+ falling edge; compatible with 3-V/5-V CMOS loads up to 15 pF.
VREFOUT+, VREFOUT–	Internal reference outputs	Provide 3.0 V and 2.0 V differential reference; require 1-µF + 0.01-µF bypassing to maintain low-noise ADC accuracy.
VCM	Common-mode voltage output	Supplies AVDD/2 bias for analog input termination; must be bypassed with 0.1-µF + 0.01-µF capacitors to minimize noise coupling into VIN+/VIN–.
AVDD, AVSS	Analog supply and ground	5-V analog rail with dedicated ground returns; must be isolated from digital supplies to prevent SNR degradation from supply coupling.
DVDD, DVSS	Digital core supply and ground	5-V digital logic supply; separate from DRVDD to decouple switching noise from output drivers.
DRVDD, DRVSS	Digital output driver supply and ground	Configurable 3–5.25 V rail; using 3.3 V improves SNR by reducing digital switching noise injected into analog sections.

Key Features

Feature	Design Value
No missing codes over full temperature range	Guarantees monotonicity and measurement integrity in industrial environments without calibration overhead.
Buffered differential analog input	Maintains constant 1-kΩ input impedance and rejects common-mode noise - critical for transformer-coupled IF stages.
On-chip sample-and-hold with 120-MHz bandwidth	Enables accurate sampling of wideband IF signals without external S/H circuitry or bandwidth-limiting filters.
Separate DRVDD supply for digital outputs	Allows independent optimization of output drive strength and noise isolation - key for mixed-signal board partitioning.
PowerPAD™ thermal package	Exposes die backside to PCB copper; reduces junction-to-board thermal resistance by >50% versus standard QFP when properly mounted.

Applications

Wireless Local Loop Base Station	Cable Modem Receiver
Use Scenario: Digitizing 2–20 MHz IF signals from RF front-end in fixed wireless access equipment operating in licensed 3.5 GHz band. IC Role / Device Role / Timing Role: High-speed IF sampling ADC capturing baseband-equivalent signals prior to digital demodulation and FEC decoding. Use Value: 77-dB SFDR ensures clean spectral representation of multi-carrier OFDM signals, minimizing adjacent-channel interference during symbol recovery.	Use Scenario: Sampling downstream QAM signals in DOCSIS 3.0/3.1 cable modems after channel filtering and gain control. IC Role / Device Role / Timing Role: Primary ADC in analog front-end, converting 36–44 MHz IF to digital for quadrature demodulation and equalization. Use Value: 10.4-bit ENOB at 31 MHz preserves modulation accuracy for 256-QAM and 1024-QAM constellations under real-world noise conditions.
Medical Ultrasound Beamformer	Magnetic Resonance Imaging (MRI) Receiver
Use Scenario: Digitizing echo return signals from phased-array transducers in portable ultrasound systems with 5–15 MHz center frequencies. IC Role / Device Role / Timing Role: Channel ADC in receive beamforming path, providing time-aligned samples for digital delay-and-sum processing. Use Value: 65-dB SNR at 15.5 MHz ensures sufficient dynamic range to resolve weak tissue echoes amid strong near-field reflections.	Use Scenario: Capturing MR signal harmonics from RF coils in 1.5T and 3T MRI scanners, where Larmor frequencies range from 64–128 MHz. IC Role / Device Role / Timing Role: Downconverted IF digitizer in quadrature receiver chain, interfacing with analog mixers and LPFs before FPGA-based reconstruction. Use Value: Differential input structure and 120-MHz analog bandwidth preserve phase coherence between I/Q channels essential for image fidelity.

Wireless Local Loop Base Station

Cable Modem Receiver

Use Scenario: Digitizing 2–20 MHz IF signals from RF front-end in fixed wireless access equipment operating in licensed 3.5 GHz band.

IC Role / Device Role / Timing Role: High-speed IF sampling ADC capturing baseband-equivalent signals prior to digital demodulation and FEC decoding.

Use Value: 77-dB SFDR ensures clean spectral representation of multi-carrier OFDM signals, minimizing adjacent-channel interference during symbol recovery.

Use Scenario: Sampling downstream QAM signals in DOCSIS 3.0/3.1 cable modems after channel filtering and gain control.

IC Role / Device Role / Timing Role: Primary ADC in analog front-end, converting 36–44 MHz IF to digital for quadrature demodulation and equalization.

Use Value: 10.4-bit ENOB at 31 MHz preserves modulation accuracy for 256-QAM and 1024-QAM constellations under real-world noise conditions.

Medical Ultrasound Beamformer

Magnetic Resonance Imaging (MRI) Receiver

Use Scenario: Digitizing echo return signals from phased-array transducers in portable ultrasound systems with 5–15 MHz center frequencies.

IC Role / Device Role / Timing Role: Channel ADC in receive beamforming path, providing time-aligned samples for digital delay-and-sum processing.

Use Value: 65-dB SNR at 15.5 MHz ensures sufficient dynamic range to resolve weak tissue echoes amid strong near-field reflections.

Use Scenario: Capturing MR signal harmonics from RF coils in 1.5T and 3T MRI scanners, where Larmor frequencies range from 64–128 MHz.

IC Role / Device Role / Timing Role: Downconverted IF digitizer in quadrature receiver chain, interfacing with analog mixers and LPFs before FPGA-based reconstruction.

Use Value: Differential input structure and 120-MHz analog bandwidth preserve phase coherence between I/Q channels essential for image fidelity.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed IF sampling ADC applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADS5463IPFP	13-bit, 500 MSPS, JESD204B serial output; higher power (1.8 W); requires external clock conditioner.	Better suited for direct RF sampling above 100 MHz; not drop-in compatible due to different interface and supply requirements.	Select when Nyquist zone exceeds 250 MHz and system supports high-speed serial interface.
AD9233BCPZ-40	12-bit, 40 MSPS, LVDS outputs; lower power (275 mW); no internal reference; requires external REF buffer.	Optimized for low-noise, low-power portable instrumentation; lacks buffered analog input and internal reference flexibility.	Select when board space and power budget are constrained, and external reference design is acceptable.

Compared with ADS5463IPFP and AD9233BCPZ-40, the THS1240CPHP provides unique integration of internal reference, buffered differential input, and PowerPAD thermal management - making it optimal for cost-sensitive, thermally demanding IF sampling in cable and wireless infrastructure where parallel CMOS interfacing is preferred.

Availability

THS1240CPHP is available at Aetrix Electronics and suitable for wireless local loop base stations, cable modem receivers, and medical ultrasound systems requiring stable component supply and long-term design continuity.

Supply support for THS1240CPHP 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, embedded processing, and connectivity technologies, with decades of expertise in high-performance data converters.

The THS1240CPHP belongs to TI's high-speed communications ADC product line, designed specifically for IF sampling in broadband infrastructure where dynamic range, thermal robustness, and analog interface simplicity are critical.

FAQ

What is the operating temperature range for the THS1240CPHP?

The THS1240CPHP is rated for industrial operation from –40°C to +85°C. This specification is confirmed in the "AVAILABLE OPTIONS" table and absolute maximum ratings section of the SLAS279D datasheet, and applies specifically to the 'I' grade variant denoted by the 'I' in the part number suffix - which matches the THS1240CPHP ordering code.

Does the THS1240CPHP support single-ended clock input?

Yes, the THS1240CPHP supports single-ended clock input via CLK+ with CLK– tied to ground through a 0.01-µF capacitor, as explicitly shown in Figure 8 of the SLAS279D datasheet. Performance remains comparable to differential mode when the clock common-mode voltage is within ±10% of VDD/2.

What is the purpose of the VCM pin on the THS1240CPHP?

The VCM pin on the THS1240CPHP outputs AVDD/2 (2.5 V nominal) to bias the differential analog input stage. As stated in the Terminal Functions table and Application Information section, it must be bypassed with 0.1-µF and 0.01-µF capacitors to stabilize common-mode voltage and prevent noise coupling into VIN+ and VIN–.

Can the THS1240CPHP operate with an external reference?

Yes, the THS1240CPHP supports external reference configuration by connecting VREFIN+ and VREFIN– to an external 1-V to 3-V differential reference source, as detailed in Figure 7 and the "using the THS1240 references" section. Internal reference usage requires shorting VREFOUT+ to VREFIN+ and VREFOUT– to VREFIN–.

Is the THS1240CPHP pin-compatible with other members of the THS1240 family?

Yes, all THS1240 variants - including THS1240CPHP, THS1240IPHP, and THS1240C - share identical 48-pin PHP package footprints and pinouts, as confirmed by the "AVAILABLE OPTIONS" table and consistent terminal numbering across the SLAS279D datasheet. Only temperature grade and ordering code differ.

THS1240CPHP Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Number of Bits:: -

Sampling Rate (Per Second):: -

Number of Inputs:: -

Input Type:: -

Data Interface:: -

Configuration:: -

Ratio - S/H:ADC:: -

Number of A/D Converters:: -

Architecture:: -

Reference Type:: -

Voltage - Supply, Analog:: -

Voltage - Supply, Digital:: -

Features:: -

Operating Temperature:: -

Supplier Device Package:: -

Mounting Type:: -

Grade:: -

Qualification:: -

THS1240CPHP FAQ

1.How can I place an order for THS1240CPHP through Aetrix?

Please submit a Request for Quotation (RFQ) for THS1240CPHP 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 THS1240CPHP reliable?

The price and inventory of THS1240CPHP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS1240CPHP is usually 5 days.

3.What payment methods are accepted for THS1240CPHP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS1240CPHP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for THS1240CPHP?

THS1240CPHP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your THS1240CPHP 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 THS1240CPHP?

For technical support, including THS1240CPHP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS1240CPHP requirements.

6.How does Aetrix verify that THS1240CPHP is sourced from the original manufacturer or authorized distributors?

All THS1240CPHP 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 THS1240CPHP meets industry standards.

7.What is the process for return or replacement of THS1240CPHP?

All THS1240CPHP units undergo pre-shipment inspection (PSI). If there is an issue with THS1240CPHP, 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 THS1240CPHP part is unused and in its original packaging.

Return procedure for THS1240CPHP:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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