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Analog Devices Inc. AD1674ARZ-REEL
- Part No.:
- AD1674ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AD1674ARZ-REEL.pdf
- Description:
- IC ADC 12BIT SAR 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:689
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Product details
Overview
AD1674ARZ-REEL from Analog Devices is a monolithic 12-bit, 100 kSPS analog-to-digital converter with integrated sample-and-hold amplifier (SHA), on-chip 10 V reference, and 8-/16-bit microprocessor interface. It supports unipolar (0 V–10 V, 0 V–20 V) and bipolar (±5 V, ±10 V) input ranges, delivers ±1 LSB integral nonlinearity, and operates across –40°C to +85°C. It is used in precision data acquisition systems requiring ac/dc-specified performance and industrial-grade reliability.
For engineers reviewing the AD1674ARZ-REEL datasheet, AD1674ARZ-REEL pinout, AD1674ARZ-REEL application, or AD1674ARZ-REEL equivalent, this page provides verified technical context, validated pin functions, confirmed ac/dc specifications, and real-world application mappings - all specific to the AD1674ARZ-REEL plastic SOIC-28 variant with industrial temperature grade.
Technical Context
The AD1674ARZ-REEL implements a successive approximation register (SAR) architecture with an integrated SHA that supports full Nyquist bandwidth operation up to 500 kHz linear bandwidth. Its BiMOS II process integrates bipolar analog front-end circuitry-including laser-trimmed scaling and offset resistors-with CMOS digital logic for stable 12-bit accuracy.
It features dual-mode digital interface: full-control mode (using CE, CS, R/C, A0, 12/8) for multiplexed bus systems, and stand-alone mode (R/C-triggered) for dedicated I/O applications. The device guarantees no missing codes and is fully specified for both dc parameters (offset, full-scale error) and ac parameters (S/(N+D) = 69 dB, THD = –90 dB).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes with monotonic transfer function and no missing codes. |
| Conversion Rate | 100 kSPS - enables real-time sampling of signals up to 50 kHz Nyquist bandwidth without aliasing. |
| INL / DNL | ±1 LSB / guaranteed no missing codes - ensures linearity critical for closed-loop control and calibration-sensitive instrumentation. |
| Input Ranges | ±5 V, ±10 V, 0–10 V, 0–20 V - selectable via external resistor configuration at BIP OFF and REF IN pins; no external scaling required. |
| S/(N+D) Ratio | 69 dB (typ.) - supports high-fidelity signal reconstruction in dynamic measurement applications such as vibration analysis. |
| Supply Voltages | +5 V (VLOGIC), +12/+15 V (VCC), –12/–15 V (VEE) - enables direct interfacing with legacy industrial power rails and mixed-signal systems. |
| Package | 28-lead plastic SOIC (R-28) - RoHS-compliant surface-mount package suitable for automated assembly and industrial PCB layouts. |
Pinout & Package
AD1674ARZ-REEL is housed in a 28-lead plastic SOIC (R-28) package with standard 0.3-inch body width and 0.050-inch lead pitch. Pin 1 is marked by a beveled corner or dot; pin numbering follows counter-clockwise convention from top-left when viewed from component side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VLOGIC (Pin 1) | Digital power supply | +5 V logic rail; powers internal CMOS buffers and control logic; must be decoupled locally to suppress digital noise coupling into analog section. |
| 12/8 (Pin 2) | Digital input | Selects output format: HIGH = 12-bit parallel word; LOW = two 8-bit nibbles - enables direct connection to 8-bit microcontrollers without glue logic. |
| CS (Pin 3) | Digital input | Active-low chip select; enables conversion or read operations only when CE is also asserted - prevents bus contention in multi-device systems. |
| A0 (Pin 4) | Digital input | Byte address control: LOW initiates 12-bit conversion; HIGH initiates 8-bit conversion - allows flexible resolution selection per acquisition cycle. |
| R/C (Pin 5) | Digital input | Read/Convert control: LOW starts conversion; HIGH enables data read - defines operational mode (full-control vs. stand-alone) and timing alignment. |
| CE (Pin 6) | Digital input | Active-high chip enable; latches control inputs and initiates state transitions - must meet 50 ns setup/hold times relative to CS and R/C for reliable timing. |
| VCC (Pin 7) | Analog power supply | +12 V or +15 V analog supply; powers SHA, DAC, and comparator - requires low-noise regulation and separate analog ground return path. |
| REF OUT (Pin 8) | Analog output | +10 V reference source; supplies internal DAC and external circuitry; max 2 mA load - must be buffered for ±12 V operation to prevent regulation drift. |
| AGND (Pin 9) | Analog ground | Reference node for analog inputs, REF IN, and BIP OFF - must be isolated from DGND and connected at single point to minimize ground loop errors. |
| REF IN (Pin 10) | Analog input | Reference feedback node; connected via 50 Ω resistor to REF OUT for factory-calibrated gain - deviation alters full-scale accuracy and requires recalibration. |
| VEE (Pin 11) | Analog power supply | –12 V or –15 V analog supply; powers negative-side analog circuitry - shares current path with AGND and requires symmetrical decoupling. |
| BIP OFF (Pin 12) | Analog input | Bipolar offset adjustment node; tied to REF OUT via 50 Ω for ±5 V/±10 V modes or to AGND for unipolar - sets major carry transition point in bipolar encoding. |
| 10 VIN (Pin 13) | Analog input | 10 V span input; accepts 0–10 V unipolar or ±5 V bipolar signals - unused in 20 V span mode to avoid loading error and inter-range crosstalk. |
| 20 VIN (Pin 14) | Analog input | 20 V span input; accepts 0–20 V unipolar or ±10 V bipolar signals - unused in 10 V span mode; internal scaling resistors divide input by 4 for 1 mA DAC full scale. |
| DGND (Pin 15) | Digital ground | Return path for VLOGIC and digital outputs - must be connected to system digital ground plane; kept separate from AGND except at single-point star connection. |
| DB0–DB3 (Pins 16–19) | Digital output | LSB nibble; enabled during read when A0 = HIGH and 12/8 = LOW - outputs DB3–DB0 with trailing zeroes in 8-bit mode for seamless 8-bit bus interface. |
| DB4–DB7 (Pins 20–23) | Digital output | Middle nibble; enabled during read when A0 = LOW and 12/8 = LOW - provides DB7–DB4 while DB3–DB0 are high-Z; avoids bus conflicts in multiplexed transfers. |
| DB8–DB11 (Pins 24–27) | Digital output | MSB nibble; always active in 12-bit mode (12/8 = HIGH); enabled when A0 = LOW in 8-bit mode - delivers upper 4 bits for fast partial-word reads in time-critical applications. |
| STS (Pin 28) | Digital output | Status flag; HIGH during conversion, LOW when data valid - provides hardware handshake for interrupt-driven acquisition without polling overhead. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Sample-and-Hold Amplifier | Supports full Nyquist bandwidth (500 kHz) with <1 µs acquisition time - eliminates need for external SHA and reduces board space and signal path complexity. |
| Factory-Calibrated Input Ranges | Four laser-trimmed ranges (±5 V, ±10 V, 0–10 V, 0–20 V) - removes requirement for external precision resistors or calibration routines in production test. |
| AC and DC Performance Guarantee | Specified S/(N+D) = 69 dB and INL = ±1 LSB across –40°C to +85°C - enables use in both dynamic signal analysis and static precision measurement without derating. |
| Flexible Microprocessor Interface | 8-bit or 12-bit data organization via A0 and 12/8 pins - supports legacy 8-bit controllers and modern 16-bit buses without level shifters or data reformatting logic. |
| On-Chip 10 V Reference | Stable 9.9–10.1 V output with ±2 LSB full-scale error drift over temperature - serves as accurate reference for internal DAC and external circuitry with minimal external components. |
Applications
| Industrial Process Monitoring | Test & Measurement Equipment |
|---|---|
|
Use Scenario: Continuous voltage/current monitoring of PLC analog I/O modules in chemical plant control cabinets. IC Role / Device Role / Timing Role: Primary ADC capturing sensor outputs at 100 kSPS with ±10 V bipolar range for differential pressure transducers. Use Value: Guaranteed no missing codes and ±1 LSB INL ensure accurate detection of small process deviations without firmware correction tables. |
Use Scenario: Digitizing waveform outputs from calibrated signal generators in benchtop oscilloscopes and spectrum analyzers. IC Role / Device Role / Timing Role: High-fidelity acquisition stage with 69 dB S/(N+D) and –90 dB THD supporting FFT-based spectral analysis. Use Value: Full ac/dc specification set enables traceable metrology-grade measurements without external calibration per unit. |
| Avionics Sensor Interfaces | Medical Diagnostic Instrumentation |
|
Use Scenario: Converting analog outputs from inertial measurement units (IMUs) in flight control systems operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Ruggedized ADC with MIL-qualified variants available; STS flag synchronizes FPGA-based data capture to conversion completion. Use Value: Industrial-grade temperature range and 28-pin SOIC packaging support conformal coating and high-reliability solder joints in aerospace assemblies. |
Use Scenario: Sampling ECG and EEG front-end amplifiers in portable diagnostic devices requiring low-power, high-accuracy analog capture. IC Role / Device Role / Timing Role: Precision ADC with integrated SHA and 10 V reference - reduces component count and improves channel-to-channel matching. Use Value: On-chip reference and trimming eliminate external voltage references and manual calibration steps, accelerating time-to-market for Class II medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7892BRZ | 12-bit, 200 kSPS, single-supply (+3 V to +5.5 V), no internal reference - requires external REF and SHA. | Better suited for battery-powered portable instruments; lacks bipolar input support and industrial temp range. | Select when low-voltage operation and reduced power (<30 mW) outweigh need for integrated reference and bipolar capability. |
| MAX197BCNI+ | 12-bit, 100 kSPS, internal reference (2.5 V), software-configurable input ranges, SPI interface - no parallel bus support. | Ideal for microcontroller-based designs with limited GPIO; incompatible with legacy 8/16-bit parallel buses. | Choose for new designs prioritizing software flexibility and smaller footprint over pin compatibility with AD574A-family systems. |
Compared with AD1674ARZ-REEL, AD7892BRZ offers higher speed and lower power but demands external analog support circuitry, while MAX197BCNI+ provides programmable ranges and serial interface at the cost of parallel bus compatibility and bipolar input fidelity.
Availability
AD1674ARZ-REEL is available at Aetrix Electronics and suitable for industrial process monitoring, test & measurement equipment, avionics sensor interfaces, and medical diagnostic instrumentation requiring stable component supply and long-term obsolescence management.
Supply support for AD1674ARZ-REEL 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The AD1674 product line was designed as a drop-in upgrade to the AD574A/AD674A family, delivering integrated sample-and-hold, ac/dc specification coverage, and industrial temperature operation for precision data acquisition systems.
FAQ
What is the operating temperature range for the AD1674ARZ-REEL?
The AD1674ARZ-REEL is rated for operation from –40°C to +85°C, corresponding to the "A" grade industrial temperature specification. This range is fully characterized for all dc and ac parameters including INL, S/(N+D), and full-scale error drift, making it suitable for harsh industrial environments where ambient temperatures exceed commercial-grade limits.
Does the AD1674ARZ-REEL require external calibration?
The AD1674ARZ-REEL is factory laser-trimmed for offset, full-scale, and linearity errors and typically requires no external calibration in most applications. Unipolar and bipolar offset can be adjusted using external potentiometers per Figures 11 and 12 of the datasheet, but the AD1674ARZ-REEL meets its ±1 LSB INL and ±0.25% FSR full-scale error specs without user intervention under nominal conditions.
Can the AD1674ARZ-REEL interface directly with an 8-bit microcontroller?
Yes - the AD1674ARZ-REEL supports 8-bit data access via the A0 and 12/8 pins. When 12/8 is LOW and A0 is HIGH, DB3–DB0 output the four LSBs with DB7–DB4 forced to zero, enabling direct connection to 8-bit data buses without external latches or multiplexers. This mode is explicitly validated in Table I and Figure 2 of the AD1674 datasheet.
What is the purpose of the BIP OFF pin on the AD1674ARZ-REEL?
The BIP OFF pin on the AD1674ARZ-REEL sets the bipolar offset point: connecting it to REF OUT via a 50 Ω resistor enables ±5 V or ±10 V input ranges, while tying it to AGND selects unipolar 0–10 V or 0–20 V operation. This pin directly controls the major carry transition point (011111111111 → 100000000000) and is essential for correct two's complement code alignment in bipolar mode.
Is the AD1674ARZ-REEL pin-compatible with the AD574A?
Yes - the AD1674ARZ-REEL uses the industry-standard AD574A/AD674A pinout, including identical pin assignments for VLOGIC, CE, CS, R/C, A0, 12/8, STS, DB0–DB11, REF OUT, REF IN, BIP OFF, 10 VIN, 20 VIN, AGND, DGND, VCC, and VEE. This allows direct replacement in existing AD574A-based designs while adding integrated sample-and-hold and faster conversion timing.
AD1674ARZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 100k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- ±11.4V ~ 16.5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD1674ARZ-REEL FAQ
1.How can I place an order for AD1674ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD1674ARZ-REEL 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 AD1674ARZ-REEL reliable?
The price and inventory of AD1674ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD1674ARZ-REEL is usually 5 days.
3.What payment methods are accepted for AD1674ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD1674ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD1674ARZ-REEL?
AD1674ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD1674ARZ-REEL 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 AD1674ARZ-REEL?
For technical support, including AD1674ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD1674ARZ-REEL requirements.
6.How does Aetrix verify that AD1674ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD1674ARZ-REEL 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 AD1674ARZ-REEL meets industry standards.
7.What is the process for return or replacement of AD1674ARZ-REEL?
All AD1674ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD1674ARZ-REEL, 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 AD1674ARZ-REEL part is unused and in its original packaging.
Return procedure for AD1674ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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