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Texas Instruments ADS1601IPFBR
- Part No.:
- ADS1601IPFBR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-TQFP
- Datasheet:
-
ADS1601IPFBR.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,864
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Product details
Overview
ADS1601IPFBR from Texas Instruments is a 16-bit, 1.25MSPS delta-sigma analog-to-digital converter with differential input, on-chip digital FIR filter, and 3-wire serial interface. It delivers 92dB SNR at 100kHz input, –103dB THD, and 105dB SFDR, operating from –40°C to +85°C in a TQFP-48 package. It is used in high-fidelity sonar and vibration analysis systems requiring wide dynamic range and low distortion.
For engineers reviewing the ADS1601IPFBR datasheet, ADS1601IPFBR pinout, ADS1601IPFBR application, or ADS1601IPFBR equivalent, key selection criteria include its 615kHz –3dB bandwidth, ±0.94VREF full-scale input range, internal/external reference flexibility, simultaneous sampling capability via SYNC pin, and 330mW power dissipation at full speed.
Technical Context
The ADS1601IPFBR employs a stable 2-1-1 multi-stage delta-sigma modulator sampling at 20MSPS (fCLK = 20MHz), followed by a 16× decimation FIR filter with 75dB stopband attenuation and ±0.001dB passband ripple. Its linear-phase digital filter provides a –3dB bandwidth of 615kHz and eliminates need for external anti-aliasing components beyond basic input conditioning.
It uses dedicated I/O pins-no internal registers-for control (REFEN, PD, SYNC), status (OTR), and data transfer (FSO, SCLK, DOUT). The modulator measures VIN = (AINP – AINN) against VREF = (VREFP – VREFN), supporting both internally generated (3.0V ±0.25V) and externally supplied reference configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | 1.25MSPS - supports real-time capture of signals up to 615kHz bandwidth without undersampling |
| SNR | 92dB at fIN = 100kHz, –1dBFS - enables detection of low-amplitude signals buried in noise floor |
| THD | –103dB at fIN = 100kHz, –6dBFS - preserves spectral purity in high-fidelity measurement |
| SFDR | 105dB at fIN = 100kHz, –6dBFS - suppresses spurious tones critical for vibration harmonics analysis |
| Input range | ±0.94VREF - allows ±2.82V full-scale with 3V reference, reducing need for signal scaling circuitry |
| Power dissipation | 330mW at 1.25MSPS - optimized for high-speed operation while maintaining thermal stability in dense layouts |
| Operating temp | –40°C to +85°C - qualified for industrial and outdoor embedded instrumentation environments |
Pinout & Package
The ADS1601IPFBR is housed in a 7mm × 7mm TQFP-48 package with exposed thermal pad (Pb-free, RoHS-compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINP / AINN | Differential analog input | Accepts true differential signal; common-mode voltage must be 2.7V for optimal performance |
| VREFP / VREFN | Reference voltage terminals | Define full-scale range; support internal generation (REFEN = low) or external supply (REFEN = high) |
| SYNC | Digital input | Enables deterministic multi-device synchronization for phase-coherent channel expansion |
| OTR | Digital output | Asserts high when |AINP – AINN| > 0.94VREF - provides immediate overrange fault indication |
| FSO / SCLK / DOUT | 3-wire serial interface outputs | Provide frame-synced, complementary clock/data pairs for noise-immune connection to DSPs/FPGAs |
| PD | Digital input (active low) | Enters ultra-low-power mode (<10mW) - ideal for duty-cycled acquisition systems |
| RBIAS | Analog terminal | Connects external resistor to set analog supply current and scale power vs. speed trade-off |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 16× decimation FIR filter | Eliminates external anti-aliasing filters; provides 75dB stopband attenuation and linear phase response |
| Dedicated OTR pin | Hardware-level out-of-range detection with no software overhead or latency |
| Pin-driven control (no registers) | Reduces firmware complexity - configuration via REFEN, PD, and SYNC pins only |
| Simultaneous sampling support | SYNC pin enables precise time-aligned acquisition across multiple ADS1601IPFBR devices |
| Selectable internal voltage reference | 3.0V ±0.25V reference with 50ppm/°C drift - removes need for external precision reference in cost-sensitive designs |
Applications
| Sonar Signal Processing | Vibration Analysis System |
|---|---|
Use Scenario: High-resolution echo return digitization in underwater active sonar arrays with multi-kHz bandwidth requirements. IC Role / Device Role / Timing Role: Primary ADC capturing reflected acoustic pulses with minimal harmonic distortion and maximum dynamic range. Use Value: 105dB SFDR prevents false target identification from intermodulation artifacts in multi-tone environments. | Use Scenario: Multi-channel structural health monitoring using piezoelectric sensors on rotating machinery. IC Role / Device Role / Timing Role: High-speed, synchronized sampling node in distributed sensor network with deterministic timing alignment. Use Value: SYNC pin enables sub-ns skew control across channels, preserving phase coherence for FFT-based modal analysis. |
| Data Acquisition Front-End | High-Fidelity Test Equipment |
Use Scenario: Modular rack-mounted DAQ system requiring 16-bit resolution and >600kHz usable bandwidth per channel. IC Role / Device Role / Timing Role: Core digitizer stage interfacing directly to analog signal conditioning and FPGA-based processing. Use Value: 3-wire serial interface with complementary FSO/SCLK/DOUT signals ensures robust data capture at 1.25MSPS in electrically noisy lab environments. | Use Scenario: Benchtop oscilloscope or spectrum analyzer front-end demanding low-noise, low-distortion digitization. IC Role / Device Role / Timing Role: Precision ADC stage where SNR and THD directly define instrument specification limits. Use Value: 92dB SNR at 100kHz and –103dB THD meet Class-A test equipment accuracy requirements per IEEE 1057. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1602IPFBR | Same architecture but 2.5MSPS data rate; higher power (450mW); identical pinout and interface | Required when >1.25MSPS sampling is needed; not drop-in due to increased thermal load and clock timing | Select ADS1602IPFBR only if system requires >1.25MSPS - otherwise ADS1601IPFBR offers better power efficiency |
| AD7606BSTZ | SAR architecture; 16-bit, 200kSPS; parallel/serial interface; ±10V input range; no on-chip digital filter | Better suited for lower-speed, wide-input-voltage industrial PLC inputs; lacks simultaneous sampling sync | Choose AD7606BSTZ for DC-coupled, high-voltage, multi-channel industrial monitoring - not for high-frequency dynamic signal capture |
Compared with ADS1602IPFBR and AD7606BSTZ, the ADS1601IPFBR uniquely balances 1.25MSPS throughput, 92dB SNR, and integrated FIR filtering in a single TQFP-48 package - making it optimal for mid-bandwidth, high-fidelity measurement where power, size, and anti-aliasing simplicity are prioritized.
Availability
ADS1601IPFBR is available at Aetrix Electronics and suitable for sonar transducer interfaces, vibration sensor front-ends, and modular data acquisition systems requiring stable component supply, long-term obsolescence management, and traceable sourcing.
Supply support for ADS1601IPFBR 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 company specializing in analog and embedded processing technologies, with leadership in precision data converters and signal chain solutions.
The ADS1601IPFBR belongs to TI's high-speed delta-sigma ADC product line, designed specifically for demanding measurement applications where dynamic range, linearity, and ease of integration outweigh raw speed requirements.
FAQ
What is the maximum input frequency supported by the ADS1601IPFBR?
The ADS1601IPFBR has a –3dB bandwidth of 615kHz, meaning it maintains full amplitude response up to that frequency. Its usable Nyquist-limited input frequency is 625kHz (half of 1.25MSPS), but the analog front-end and digital filter shape the effective passband to 615kHz. Performance metrics like SNR and THD are specified up to 500kHz, confirming reliable operation across audio and ultrasonic sensing bands.
Does the ADS1601IPFBR require external memory or configuration registers to operate?
No, the ADS1601IPFBR operates without external memory or register programming. All functionality-including reference selection (REFEN), power-down (PD), and synchronization (SYNC)-is controlled by dedicated digital I/O pins. This pin-driven architecture eliminates firmware initialization overhead and ensures deterministic startup behavior, simplifying integration into resource-constrained microcontroller or FPGA-based systems.
How does the OTR pin function on the ADS1601IPFBR?
The OTR (Out-of-Range) pin on the ADS1601IPFBR is an open-drain digital output that asserts high whenever the absolute value of the differential input (|AINP – AINN|) exceeds 0.94VREF. It responds within one conversion cycle, providing immediate hardware-level fault detection without software polling. This enables fast system-level protection, such as disabling excitation sources or triggering alarm logic in sonar or structural monitoring applications.
Can the ADS1601IPFBR interface directly with a TMS320C6748 DSP?
Yes, the ADS1601IPFBR interfaces directly with TI's TMS320C6748 DSP via its 3-wire serial interface (FSO, SCLK, DOUT), as explicitly stated in the datasheet. The complementary FSO and SCLK signals provide noise immunity, and the frame-synchronized output aligns with McBSP or SPI-compatible peripherals. No level-shifting or protocol translation is required when IOVDD = 3.3V and DVDD = 3.3V match the DSP's I/O voltage.
What is the role of the RBIAS pin on the ADS1601IPFBR?
The RBIAS pin on the ADS1601IPFBR connects to an external resistor that sets the analog supply current (IAVDD), enabling scalable power consumption. With RBIAS = 60kΩ, IAVDD = 77mA (330mW at 1.25MSPS); increasing RBIAS reduces current linearly - e.g., 267kΩ lowers power to ~145mW at 625kSPS. This analog-controlled power scaling avoids digital reconfiguration delays and supports adaptive power management in battery-operated or thermally constrained systems.
ADS1601IPFBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-TQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 1.25M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 2.7V ~ 3.3V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-TQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS1601IPFBR FAQ
1.How can I place an order for ADS1601IPFBR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1601IPFBR 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 ADS1601IPFBR reliable?
The price and inventory of ADS1601IPFBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1601IPFBR is usually 5 days.
3.What payment methods are accepted for ADS1601IPFBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1601IPFBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1601IPFBR?
ADS1601IPFBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1601IPFBR 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 ADS1601IPFBR?
For technical support, including ADS1601IPFBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1601IPFBR requirements.
6.How does Aetrix verify that ADS1601IPFBR is sourced from the original manufacturer or authorized distributors?
All ADS1601IPFBR 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 ADS1601IPFBR meets industry standards.
7.What is the process for return or replacement of ADS1601IPFBR?
All ADS1601IPFBR units undergo pre-shipment inspection (PSI). If there is an issue with ADS1601IPFBR, 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 ADS1601IPFBR part is unused and in its original packaging.
Return procedure for ADS1601IPFBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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