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Analog Devices Inc. AD7175-2BRUZ
- Part No.:
- AD7175-2BRUZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7175-2BRUZ.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,583
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Product details
Overview
AD7175-2BRUZ from Analog Devices is a 24-bit, sigma-delta analog-to-digital converter (ADC) with true rail-to-rail buffered inputs, 250 kSPS maximum output data rate, 20 µs channel settling time, and integrated 2.5 V low-drift reference. It supports 2 fully differential or 4 single-ended input channels via a crosspoint multiplexer and operates across −40°C to +105°C for industrial process control and precision instrumentation.
For engineers reviewing the AD7175-2BRUZ datasheet, AD7175-2BRUZ pinout, AD7175-2BRUZ application, or AD7175-2BRUZ equivalent, key selection criteria include noise-free resolution at multiple ODRs (17.2 bits @ 250 kSPS), ±1 ppm INL with buffers enabled, simultaneous 50/60 Hz rejection, and flexible SPI/QSPI/MICROWIRE interface compatibility.
Technical Context
The AD7175-2BRUZ implements a dual-stage Sinc5 + Sinc1 digital filter architecture enabling single-cycle settling at 20 µs per channel in scan mode, and supports programmable filter types-including enhanced 50/60 Hz rejection-on a per-channel basis. Its crosspoint multiplexer allows arbitrary routing of up to four analog inputs to two ADC cores.
It integrates rail-to-rail analog input buffers and reference input buffers, both with sub-nA input bias current (±30 nA typ), and features on-chip offset/gain calibration registers configurable per channel. The internal 2.5 V reference exhibits ±2 ppm/°C drift (0°C to 105°C) and delivers up to ±10 mA load current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit no missing codes; guarantees monotonicity across full scale. |
| Output Data Rate | 5 SPS to 250 kSPS; enables trade-off between speed and noise performance. |
| Noise-Free Bits | 17.2 @ 250 kSPS, 20 @ 2.5 kSPS, 24 @ 20 SPS; defines usable dynamic range per ODR. |
| INL Error | ±1 ppm of FSR with buffers enabled; ensures high linearity for precision measurement. |
| 50/60 Hz Rejection | 85 dB at 50 ms settling; eliminates mains interference without external filtering. |
| Reference Drift | ±2 ppm/°C (0°C to 105°C); minimizes temperature-induced gain error in long-term deployments. |
| Supply Range | AVDD1 = 4.5–5.5 V, AVDD2/IOVDD = 2–5.5 V; supports mixed-voltage system integration. |
| Operating Temp | −40°C to +105°C; qualified for harsh industrial and extended-temperature environments. |
Pinout & Package
The AD7175-2BRUZ is housed in a 24-lead TSSOP package (JEDEC MO-153, 7.8 mm × 4.4 mm), with exposed pad for thermal enhancement and specified θJA = 81°C/W on 2-layer PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN4 | Analog Input Terminals | Five configurable analog inputs routed via crosspoint mux; AIN0–AIN3 support single-ended or differential pairs, AIN4 is auxiliary. |
| REF+, REF− | Reference Input Terminals | Differential reference input range: 1 V to AVDD1; supports external references or internal REFOUT feedback. |
| REFOUT | Analog Output | Buffered 2.5 V reference output; drives external circuitry or serves as reference for other devices. |
| AVDD1, AVDD2, IOVDD, AVSS, DGND | Power Supply Terminals | Split analog supplies (AVDD1/AVSS ±2.5 V or 5 V single-ended) and independent digital I/O supply enable noise isolation. |
| SCLK, DIN, DOUT/RDY, CS, SYNC/ERROR | Digital Interface Pins | Full SPI-compatible interface with Schmitt-triggered SCLK; DOUT/RDY doubles as data-ready interrupt. |
| XTAL1, XTAL2/CLKIO | Clock Interface | Supports internal 16 MHz oscillator, external crystal (14–16.384 MHz), or external CMOS clock source. |
| GPIO0, GPIO1 | General-Purpose I/O | AVDD1/AVSS-referenced outputs/inputs; usable for status signaling or external MUX control. |
Key Features
| Feature | Design Value |
|---|---|
| Per-Channel Filter Selection | Independent Sinc3, Sinc5+Sinc1, or enhanced 50/60 Hz rejection filters assignable to each input channel. |
| Rail-to-Rail Buffered Inputs | Input voltage range extends from AVSS to AVDD1; eliminates external op-amp buffering for high-impedance sensors. |
| True Rail-to-Rail Reference Buffers | Enables direct connection of low-output-impedance references (e.g., REFOUT) without level-shifting. |
| On-Chip Temperature Sensor | ±2°C accuracy after user calibration at 25°C; provides system-level thermal monitoring without external components. |
| Configurable Burnout Currents | ±10 µA source/sink on enabled analog inputs; supports RTD/open-wire fault detection in sensor interfaces. |
| Integrated Calibration Registers | Offset and gain calibration stored per channel; enables field recalibration without firmware changes. |
Applications
| Process Control Modules | Medical Instrumentation |
|---|---|
Use Scenario: High-density PLC/DCS analog input modules acquiring temperature, pressure, and flow signals from multiple field transmitters. IC Role / Device Role / Timing Role: Primary ADC for 4-channel simultaneous-sampling acquisition with <20 µs inter-channel settling and 50/60 Hz rejection. Use Value: Eliminates need for external anti-aliasing filters and reference buffers, reducing BOM count and layout area by ≥30%. | Use Scenario: Multi-parameter patient monitors requiring synchronized acquisition of ECG, respiration, and SpO₂ sensor signals. IC Role / Device Role / Timing Role: Precision front-end ADC with per-channel gain/offset calibration and low-latency 250 kSPS burst mode for transient capture. Use Value: Achieves 24-bit effective resolution at 10 kSPS with <1 µV rms noise, meeting IEC 60601-2-27 ECG accuracy requirements. |
| Chromatography Systems | Scientific Multichannel Loggers |
Use Scenario: Gas/liquid chromatography detectors digitizing low-level, high-impedance electrode outputs with ultra-low drift. IC Role / Device Role / Timing Role: Low-noise, low-drift ADC with internal 2.5 V reference (±2 ppm/°C) and true rail-to-rail input buffers. Use Value: Delivers 24 noise-free bits at 20 SPS and ±1 ppm INL, enabling sub-ppm analyte quantification stability over 8-hour runs. | Use Scenario: Environmental data loggers capturing thermocouple, RTD, and strain gauge readings across remote sites for >1 year unattended. IC Role / Device Role / Timing Role: Low-power, high-accuracy ADC with standby current of 25 µA and integrated burnout currents for open-wire detection. Use Value: Reduces system sleep-mode power by 40% vs. discrete buffer + ADC solutions while maintaining ±0.005% full-scale accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision, multi-channel sigma-delta ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7177-2BRUZ | 32-bit resolution, 10 kSPS max ODR, lower noise (19.5 noise-free bits @ 10 kSPS), same 24-TSSOP package and pinout. | Better suited for ultra-high-resolution DC measurements (e.g., weigh scales), not high-speed scanning. | Select when resolution >24 bits and ODR ≤10 kSPS is required; not drop-in for 250 kSPS use cases. |
| LTC2500-32IUK#PBF | 32-bit, 1 MSPS, integrated digital filter, but no crosspoint mux, no internal reference, and requires external buffers for rail-to-rail operation. | Targets high-speed precision applications where channel count and integrated signal conditioning are secondary. | Choose when maximum throughput (1 MSPS) outweighs integrated features; adds ≥4 external components for equivalent functionality. |
Compared with AD7175-2BRUZ, AD7177-2BRUZ trades speed for higher resolution and lower noise, while LTC2500-32IUK#PBF sacrifices integration and ease-of-use for raw speed-making AD7175-2BRUZ optimal for balanced performance in industrial multichannel systems.
Availability
AD7175-2BRUZ is available at Aetrix Electronics and suitable for process control modules, medical instrumentation, chromatography systems, and scientific multichannel loggers requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for AD7175-2BRUZ 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD7175-2BRUZ belongs to the AD717x family of precision sigma-delta ADCs engineered for industrial process control, scientific instrumentation, and medical diagnostics where low noise, fast settling, and integrated signal conditioning are critical.
FAQ
What is the maximum output data rate supported by the AD7175-2BRUZ?
The AD7175-2BRUZ supports an output data rate (ODR) range of 5 SPS to 250 kSPS. At the maximum 250 kSPS rate, it achieves 17.2 noise-free bits and maintains 20 µs channel settling in multiplexed scan mode. This makes AD7175-2BRUZ suitable for high-speed precision applications such as transient capture in medical instrumentation or fast-scan chromatography detection.
Does the AD7175-2BRUZ include an internal voltage reference?
Yes, the AD7175-2BRUZ integrates a precision 2.5 V band gap reference with ±2 ppm/°C drift (0°C to 105°C) and buffered REFOUT pin capable of sourcing/sinking ±10 mA. The reference is factory trimmed and includes output buffering to drive external circuitry, eliminating the need for external reference ICs in most designs using AD7175-2BRUZ.
Can the AD7175-2BRUZ operate with split analog supplies?
Yes, the AD7175-2BRUZ supports split analog supplies: AVDD1/AVSS can be configured as ±2.5 V (i.e., AVDD1 = +2.5 V, AVSS = −2.5 V), while AVDD2 and IOVDD remain referenced to DGND. This configuration enables true bipolar input ranges and improves noise immunity in isolated industrial systems using AD7175-2BRUZ.
How many analog input channels does the AD7175-2BRUZ support, and what configurations are available?
The AD7175-2BRUZ supports up to five analog input pins (AIN0–AIN4) and implements a crosspoint multiplexer that enables configuration as either two fully differential channels or four pseudo-differential/single-ended channels. Channel selection, buffer enable, and filter settings are configurable per channel-providing flexible signal routing without external hardware changes to the AD7175-2BRUZ design.
What digital interface protocols are compatible with the AD7175-2BRUZ?
The AD7175-2BRUZ features a standard 3- or 4-wire SPI-compatible serial interface with Schmitt-triggered SCLK, supporting SPI, QSPI, MICROWIRE, and DSP modes. It operates with CS, SCLK, DIN, and DOUT/RDY pins and includes CRC checksum protection and register-level read/write addressing-ensuring robust communication in noisy industrial environments using AD7175-2BRUZ.
AD7175-2BRUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 2, 4
- Input Type:
- Differential, Pseudo-Differential, Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- MUX-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2V ~ 5.5V
- Voltage - Supply, Digital:
- 2V ~ 5.5V
- Features:
- Temperature Sensor
- Operating Temperature:
- -40°C ~ 105°C
- Supplier Device Package:
- 24-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7175-2BRUZ FAQ
1.How can I place an order for AD7175-2BRUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7175-2BRUZ 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 AD7175-2BRUZ reliable?
The price and inventory of AD7175-2BRUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7175-2BRUZ is usually 5 days.
3.What payment methods are accepted for AD7175-2BRUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7175-2BRUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7175-2BRUZ?
AD7175-2BRUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7175-2BRUZ 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 AD7175-2BRUZ?
For technical support, including AD7175-2BRUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7175-2BRUZ requirements.
6.How does Aetrix verify that AD7175-2BRUZ is sourced from the original manufacturer or authorized distributors?
All AD7175-2BRUZ 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 AD7175-2BRUZ meets industry standards.
7.What is the process for return or replacement of AD7175-2BRUZ?
All AD7175-2BRUZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7175-2BRUZ, 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 AD7175-2BRUZ part is unused and in its original packaging.
Return procedure for AD7175-2BRUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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