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Texas Instruments ADS1601IPFBT
- Part No.:
- ADS1601IPFBT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-TQFP
- Datasheet:
-
ADS1601IPFBT.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:268
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Product details
Overview
ADS1601IPFBT from Texas Instruments is a 16-bit, 1.25MSPS delta-sigma analog-to-digital converter with 92dB SNR at 100kHz input, –103dB THD, and 105dB SFDR. It features an on-chip 16× decimation FIR filter, ±0.94VREF differential input range, and operates from –40°C to +85°C in a TQFP-48 package. It serves as a high-precision front-end ADC in sonar signal chains.
For engineers reviewing the ADS1601IPFBT datasheet, ADS1601IPFBT pinout, ADS1601IPFBT application, or ADS1601IPFBT equivalent, key selection criteria include its 615kHz –3dB bandwidth, 20MHz clock input support, dual complementary serial outputs (DOUT/FSO/SCLK), internal/external reference flexibility, and simultaneous sampling capability across multiple units.
Technical Context
The ADS1601IPFBT employs a stable 2-1-1 multi-stage delta-sigma modulator sampling at up to 20MSPS, followed by a linear-phase FIR decimation filter delivering 16-bit output at 1.25MSPS. Its stopband extends to 19.3MHz with 75dB attenuation, eliminating need for aggressive external anti-aliasing filters.
It uses dedicated I/O pins-no internal registers-for control (PD, SYNC, REFEN), status (OTR), and data transfer (DOUT/FSO/SCLK pairs). The analog input stage requires differential drive with 2.7V common-mode voltage and supports both internal (REFEN = low) and external (REFEN = high) reference configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | 1.25MSPS - fixed output rate after 16× decimation; matches TMS320 DSP interface timing |
| –3dB bandwidth | 615kHz - usable signal bandwidth without digital filter roll-off penalty |
| SNR @ 100kHz | 92dB at –1dBFS - enables high-fidelity capture of narrowband ultrasonic signals |
| THD @ 100kHz | –103dB at –6dBFS - critical for vibration analysis where harmonic content must be resolved |
| Input range | ±0.94VREF differential - supports ±2.82V full-scale with 3V reference, reducing out-of-range events |
| Power dissipation | 330mW at 1.25MSPS - optimized for continuous high-speed acquisition without forced cooling |
| Reference options | Internal 3V (±50ppm/°C drift) or external 2.0–3.25V - allows system-level reference sharing or precision calibration |
Pinout & Package
The ADS1601IPFBT is housed in a 7mm × 7mm TQFP-48 package with exposed thermal pad (PFB suffix), rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINP / AINN | Differential analog input | Accepts ±0.94VREF signal; requires 2.7V common-mode bias and matched layout for >92dB CMRR |
| VREFP / VREFN | Reference voltage terminals | Define differential reference; internal generation enabled via REFEN low; external reference applied across these pins |
| VMID | Midpoint voltage | Provides 2.4V bias for external driver circuits; used to set common-mode level for AINP/AINN |
| RBIAS | Analog bias resistor terminal | Connects external 60kΩ resistor to set modulator bias current and optimize power/performance trade-off |
| DOUT / DOUT | Complementary data output | LVCMOS-compatible 16-bit serial output; directly interfaces FPGA or TI C6000 DSP without level-shifting |
| SCLK / SCLK | Complementary serial clock | Self-clocked output; eliminates need for external clock synchronization in multi-ADC systems |
| FSO / FSO | Complementary frame sync | Indicates start of new conversion frame; enables deterministic latency alignment across synchronized ADS1601IPFBT units |
| SYNC | Global synchronization input | Edge-triggered reset for all internal timing; ensures sample-phase coherence in multi-channel acquisition |
| OTR | Out-of-range indicator | Active-high flag signaling AINP–AINN exceeds ±0.94VREF; enables real-time signal clipping detection |
| PD | Power-down control | Active-low input; reduces power to 10mW when asserted, preserving state for fast wake-up |
| REFEN | Reference enable | Active-low control selecting internal (low) or external (high) reference; internal pull-down ensures default internal mode |
| AVDD / AGND | Analog supply / ground | 5V ±2.5% analog rail; separate AGND planes required to maintain 92dB SNR performance |
| DVDD / DGND | Digital supply / ground | 3V digital core; isolated from AVDD to prevent digital noise coupling into analog path |
| IOVDD | I/O supply | 2.7–5.25V programmable logic interface rail; supports mixed-voltage system integration |
| CLK | Master clock input | 20MHz CMOS input; jitter sensitivity reduced 4× vs Nyquist ADCs due to oversampling architecture |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 16× FIR decimation filter | Provides 75dB stopband attenuation and ±0.001dB passband ripple - eliminates need for external anti-aliasing filter components |
| Dual complementary serial outputs | DOUT/FSO/SCLK pairs reduce EMI and improve timing margin in noisy industrial environments |
| Simultaneous sampling support | SYNC pin enables deterministic phase alignment across multiple ADS1601IPFBT devices - essential for coherent multi-channel sonar beamforming |
| Pin-driven configuration | No internal registers or SPI programming required - simplifies firmware development and reduces boot-time dependencies |
| Adjustable power dissipation | RBIAS terminal allows dynamic scaling of analog power from 330mW (1.25MSPS) to 145mW (625kSPS) - supports adaptive sampling rate strategies |
Applications
| Sonar Signal Acquisition | Vibration Analysis System |
|---|---|
Use Scenario: High-frequency underwater echo return digitization in active sonar arrays with 500kHz bandwidth requirements. IC Role / Device Role / Timing Role: Primary high-speed ADC front-end capturing differential transducer outputs with deterministic latency and low jitter. Use Value: 615kHz –3dB bandwidth and 92dB SNR enable resolution of weak echo returns buried in acoustic noise floor. | Use Scenario: Multi-axis mechanical vibration monitoring on rotating equipment using piezoelectric sensors. IC Role / Device Role / Timing Role: Simultaneously sampled ADC channel in synchronized sensor node, capturing transient shock events. Use Value: SYNC-driven multi-unit coherence and –103dB THD allow precise harmonic signature extraction for predictive maintenance. |
| Data Acquisition Front-End | Ultrasonic Non-Destructive Testing |
Use Scenario: Modular rack-mounted DAQ system requiring 16-bit resolution, 1.25MSPS throughput, and field-replaceable ADC modules. IC Role / Device Role / Timing Role: Standalone ADC subsystem with direct DSP/FPGA interface and configurable reference. Use Value: 3-wire serial interface and IOVDD flexibility simplify integration across legacy and next-gen controller platforms. | Use Scenario: Pulse-echo flaw detection in metal weld inspection using 1–10MHz transducers with wide dynamic range needs. IC Role / Device Role / Timing Role: High-linearity digitizer for time-of-flight measurement with sub-nanosecond aperture delay stability. Use Value: ±0.94VREF input range and OTR flag support safe operation with high-amplitude pulse excitation and echo recovery. |
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 |
|---|---|---|---|
| ADS1602IPFBT | Same architecture but 2.5MSPS output rate; higher power (450mW); identical pinout and interface | Required when system demands >1.25MSPS sustained throughput without interpolation | Select ADS1602IPFBT only if full 2.5MSPS bandwidth is needed; ADS1601IPFBT offers better power efficiency at 1.25MSPS |
| AD7606BSTZ | SAR architecture; 200kSPS; no on-chip filter; parallel/serial interface; different pinout and power domains | Suitable for lower-speed, lower-power, or cost-sensitive industrial DAQ where oversampling not required | Choose AD7606BSTZ for simpler design, lower power, or legacy parallel bus integration; not drop-in compatible with ADS1601IPFBT |
Compared with ADS1602IPFBT, the ADS1601IPFBT delivers identical noise and linearity at half the data rate and 25% lower power; versus AD7606BSTZ, it provides 6× higher throughput and integrated filtering but requires more complex clock and timing management.
Availability
ADS1601IPFBT is available at Aetrix Electronics and suitable for sonar signal acquisition, vibration analysis, and high-channel-count data acquisition requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADS1601IPFBT 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 high-performance data converters for industrial, automotive, and communications markets.
The ADS1601IPFBT belongs to TI's precision delta-sigma ADC product line, engineered for demanding measurement applications where high SNR, low THD, and deterministic timing outweigh raw speed requirements.
FAQ
What is the maximum clock frequency supported by the ADS1601IPFBT?
The ADS1601IPFBT accepts a master clock (CLK) input up to 20MHz, as specified in the absolute maximum ratings and electrical characteristics tables. Operation at 20MHz enables the full 1.25MSPS data rate with optimal SNR and THD performance. Exceeding 20MHz may cause timing violations or degraded specifications, and is not guaranteed by Texas Instruments.
Does the ADS1601IPFBT require external configuration registers to operate?
No, the ADS1601IPFBT does not require external configuration registers. All functionality-including reference selection (REFEN), power-down (PD), and synchronization (SYNC)-is controlled by dedicated I/O pins. This pin-driven architecture eliminates SPI/I²C initialization sequences and simplifies firmware integration, making ADS1601IPFBT operational immediately upon power-up with appropriate pin states.
How does the OTR pin function on the ADS1601IPFBT?
The OTR (Out-of-Range) pin on the ADS1601IPFBT is a digital output that goes high whenever the differential analog input (AINP – AINN) exceeds ±0.94VREF. It provides real-time hardware indication of signal clipping without requiring software polling of output codes. For ADS1601IPFBT, this flag remains asserted for the duration of the out-of-range condition and resets automatically once the input returns within full-scale bounds.
Can the ADS1601IPFBT perform simultaneous sampling with other ADCs?
Yes, the ADS1601IPFBT supports deterministic simultaneous sampling across multiple units via its dedicated SYNC input pin. When a common rising edge is applied to SYNC on multiple ADS1601IPFBT devices, their internal modulator clocks align, ensuring coherent sampling instants. This capability is explicitly documented in the datasheet and is used in multi-channel sonar and vibration analysis systems requiring phase-aligned acquisition.
What is the purpose of the RBIAS pin on the ADS1601IPFBT?
The RBIAS pin on the ADS1601IPFBT connects to an external resistor (typically 60kΩ) that sets the bias current for the internal delta-sigma modulator. Adjusting RBIAS allows dynamic scaling of analog power consumption: at 60kΩ, ADS1601IPFBT draws 65mA from AVDD (330mW total); increasing resistance reduces current and power, enabling lower-speed operation at 625kSPS with 145mW dissipation while maintaining specified performance.
ADS1601IPFBT 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:
- -
ADS1601IPFBT FAQ
1.How can I place an order for ADS1601IPFBT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1601IPFBT 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 ADS1601IPFBT reliable?
The price and inventory of ADS1601IPFBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1601IPFBT is usually 5 days.
3.What payment methods are accepted for ADS1601IPFBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1601IPFBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1601IPFBT?
ADS1601IPFBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1601IPFBT 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 ADS1601IPFBT?
For technical support, including ADS1601IPFBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1601IPFBT requirements.
6.How does Aetrix verify that ADS1601IPFBT is sourced from the original manufacturer or authorized distributors?
All ADS1601IPFBT 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 ADS1601IPFBT meets industry standards.
7.What is the process for return or replacement of ADS1601IPFBT?
All ADS1601IPFBT units undergo pre-shipment inspection (PSI). If there is an issue with ADS1601IPFBT, 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 ADS1601IPFBT part is unused and in its original packaging.
Return procedure for ADS1601IPFBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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