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Analog Devices Inc. AD1674JRZ-REEL
- Part No.:
- AD1674JRZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AD1674JRZ-REEL.pdf
- Description:
- IC ADC 12BIT SAR 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:973
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Product details
Overview
AD1674JRZ-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 0°C to +70°C. It is used in precision data acquisition systems requiring stable DC accuracy and verified AC performance.
For engineers reviewing the AD1674JRZ-REEL datasheet, AD1674JRZ-REEL pinout, AD1674JRZ-REEL application, or AD1674JRZ-REEL equivalent, this page provides confirmed technical identity, validated pin functions, real-world timing behavior, calibrated input range support, and verified drop-in alternatives for industrial measurement and signal processing designs.
Technical Context
The AD1674JRZ-REEL implements a successive approximation register (SAR) architecture with an integrated SHA that achieves full Nyquist bandwidth support up to 1 MHz and acquisition time of 1 µs. Its BiMOS II process integrates bipolar analog front-end circuitry-including laser-trimmed scaling and bipolar offset resistors-with CMOS digital logic for simultaneous high-precision DC and AC performance.
It features dual-mode operation: full-control mode using CE/CS/R/C/A0/12/8 signals for multiplexed bus systems, and stand-alone mode where R/C alone initiates conversion with reduced aperture jitter (250 ps). The device guarantees no missing codes and is fully specified for both DC parameters (offset, full-scale error) and AC metrics (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 monotonicity guaranteed. |
| Sampling Rate | 100 kSPS - enables real-time capture of signals up to 50 kHz full-linear bandwidth. |
| INL / DNL | ±1 LSB / No Missing Codes - ensures linearity compliance for calibration-critical 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. |
| S/(N+D) Ratio | 69 dB @ 10 kHz - verified dynamic performance suitable for medium-fidelity signal analysis. |
| Aperture Jitter | 250 ps - limits sampling uncertainty to <0.02% of LSB at 100 kSPS, critical for AC accuracy. |
| Power Supplies | +5 V (VLOGIC), ±12 V or ±15 V (VCC/VEE) - supports legacy industrial power rails without level-shifting. |
Pinout & Package
AD1674JRZ-REEL is housed in a 28-lead plastic SOIC (R-28) package with standard 0.3-inch body width and gull-wing leads. Pin spacing is 0.05 inch (1.27 mm), compatible with automated PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VLOGIC (Pin 1) | Digital supply input | Accepts +4.5 V to +5.5 V; powers internal logic and three-state buffers-must be decoupled locally. |
| 12/8 (Pin 2) | Digital control input | Selects output format: HIGH = 12-bit parallel word; LOW = two 8-bit nibbles for 8-bit bus interfacing. |
| CS (Pin 3) | Chip select input | Active LOW; enables device decoding in multi-peripheral bus systems-requires synchronous assertion with CE. |
| A0 (Pin 4) | Address/control input | Determines conversion length (LOW = 12-bit, HIGH = 8-bit) and read byte selection during data access. |
| R/C (Pin 5) | Read/Convert control | LOW = initiate conversion; HIGH = enable data read; falling edge triggers conversion in stand-alone mode. |
| CE (Pin 6) | Chip enable input | Active HIGH; initiates convert or read when CS is LOW-timing-critical for setup/hold compliance. |
| VCC (Pin 7) | Analog positive supply | +11.4 V to +16.5 V; powers SHA, DAC, and comparator-requires low-noise filtering and local bypassing. |
| REF OUT (Pin 8) | Analog reference output | +9.9 V to +10.1 V buffered 10 V reference; supplies BIP OFF and REF IN-must not be loaded dynamically. |
| AGND (Pin 9) | Analog ground | Reference return for analog inputs and internal circuitry-must be separated from DGND with single-point tie. |
| REF IN (Pin 10) | Reference input | Connected via 50 Ω resistor to REF OUT for fixed 10 V reference; enables bipolar offset calibration. |
| VEE (Pin 11) | Analog negative supply | –16.5 V to –11.4 V; required for bipolar input operation and SHA headroom-bypass to AGND. |
| BIP OFF (Pin 12) | Bipolar offset adjust | Connected via 50 Ω to REF OUT for ±5 V/±10 V modes; tied to AGND for unipolar 0–10 V/0–20 V operation. |
| 10 VIN (Pin 13) | Analog input (10 V span) | Accepts 0–10 V unipolar or ±5 V bipolar; unused in 20 V span mode-must be left open or grounded. |
| 20 VIN (Pin 14) | Analog input (20 V span) | Accepts 0–20 V unipolar or ±10 V bipolar; unused in 10 V span mode-must be left open or grounded. |
| DGND (Pin 15) | Digital ground | Return path for logic outputs and VLOGIC-separate plane recommended; connected to AGND at single point only. |
| DB0–DB3 (Pins 16–19) | Data outputs (LSB) | Low-order 4 bits in 12-bit mode; enabled when A0 = HIGH and 12/8 = LOW-three-state controlled by CE/CS/R/C. |
| DB4–DB7 (Pins 20–23) | Data outputs (mid) | Middle 4 bits in 12-bit mode; enabled when A0 = LOW and 12/8 = LOW-drives 8-bit bus upper/lower byte. |
| DB8–DB11 (Pins 24–27) | Data outputs (MSB) | High-order 4 bits in 12-bit mode; always active in 12-bit parallel format (12/8 = HIGH)-no A0 dependency. |
| STS (Pin 28) | Status output | Active HIGH during conversion; goes LOW 0.6–1.2 µs after data valid-used for interrupt-driven read synchronization. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated sample-and-hold amplifier | Supports full Nyquist bandwidth (1 MHz) with 1 µs acquisition time-eliminates need for external SHA and reduces board space. |
| Factory-laser-trimmed scaling resistors | Enables four calibrated input ranges (±5 V, ±10 V, 0–10 V, 0–20 V) without external gain/offset components. |
| Three-state output buffers with dual-bus interface | Direct connection to 8-bit or 16-bit microprocessors-no external latches or transceivers required in full-control or stand-alone mode. |
| AC and DC specifications fully guaranteed | Includes S/(N+D) = 69 dB, THD = –90 dB, and INL = ±1 LSB-validated across temperature and supply variations for production reliability. |
| Industry-standard AD574A/AD674A pin compatibility | Drop-in replacement for legacy designs-preserves existing PCB layout, firmware, and test fixtures without redesign. |
Applications
| Industrial Process Monitoring | Test & Measurement Equipment |
|---|---|
Use Scenario: Continuous voltage/current monitoring of PLC I/O modules and sensor transmitters in factory automation. IC Role / Device Role / Timing Role: Primary ADC capturing 4–20 mA loop signals conditioned to 0–10 V range with 12-bit resolution and ±1 LSB linearity. Use Value: Enables sub-0.025% full-scale measurement accuracy over 0°C to +70°C without recalibration-reducing maintenance intervals and field service costs. |
Use Scenario: Digitizing analog waveforms in benchtop oscilloscopes and spectrum analyzers with real-time FFT capability. IC Role / Device Role / Timing Role: Stand-alone mode ADC triggered by precise R/C pulses to minimize aperture jitter (250 ps) and preserve signal integrity at 100 kSPS. Use Value: Delivers verified 69 dB S/(N+D) and –90 dB THD-meeting EN 61000-4-3 immunity requirements for Class A test equipment. |
| Medical Instrumentation | Energy Metering Systems |
Use Scenario: Acquisition of biopotential signals (ECG, EEG) in portable diagnostic devices requiring low-power, high-accuracy analog front-end. IC Role / Device Role / Timing Role: Bipolar ±5 V input mode digitizing differential amplifier outputs with on-chip 10 V reference eliminating external voltage references. Use Value: Reduces component count by 3 parts (ref IC, buffer, trim pot) while maintaining ±1 LSB INL-improving MTBF and regulatory certification success rate. |
Use Scenario: Voltage and current sampling in DIN-rail mounted kWh meters compliant with IEC 62053-21 Class 0.5 accuracy. IC Role / Device Role / Timing Role: Dual-channel synchronized sampling using two AD1674JRZ-REELs sharing clock and control lines for phase-angle calculation. Use Value: Guarantees no missing codes and ±6 LSB full-scale error drift over –25°C to +70°C-ensuring meter calibration stability across seasonal temperature swings. |
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 |
|---|---|---|---|
| AD1674KRZ-REEL | Same package and pinout; improved INL (±0.5 LSB) and S/(N+D) (70 dB) due to tighter factory trimming. | Better suited for high-accuracy calibration standards and metrology-grade instruments where ±0.5 LSB linearity is mandatory. | Select AD1674KRZ-REEL when system-level INL budget requires <±0.75 LSB and THD must exceed –85 dB. |
| ADS7800U | 12-bit, 100 kSPS, but uses external reference and lacks integrated SHA; requires external op-amp for bipolar input conditioning. | Used in cost-sensitive designs where board area is less constrained and external reference flexibility is preferred. | Choose ADS7800U only if reference voltage must be programmable or if existing design already includes precision external reference and SHA circuitry. |
Compared with AD1674KRZ-REEL, the AD1674JRZ-REEL trades 0.5 LSB INL and 1 dB S/(N+D) for lower unit cost and broader availability in commercial-grade volume production. Against ADS7800U, it offers complete signal chain integration-reducing BOM count by ≥4 components-but requires fixed 10 V reference operation.
Availability
AD1674JRZ-REEL is available at Aetrix Electronics and suitable for industrial process monitoring, test & measurement equipment, medical instrumentation, and energy metering systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AD1674JRZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing (DSP) semiconductors, headquartered in Wilmington, MA.
The AD1674 product line was designed for precision data acquisition in industrial, instrumentation, and medical systems-delivering monolithic integration of SHA, reference, and microprocessor interface to replace multi-chip solutions.
FAQ
What is the operating temperature range for the AD1674JRZ-REEL?
The AD1674JRZ-REEL is rated for operation from 0°C to +70°C-the commercial grade variant of the AD1674 family. This range is validated per the AD1674J specification, including guaranteed INL (±1 LSB), full-scale error (0.25% FSR), and S/(N+D) (69 dB) across the full interval. It is not rated for extended industrial (–40°C to +85°C) or military (–55°C to +125°C) temperatures.
Does the AD1674JRZ-REEL require external clock circuitry?
No, the AD1674JRZ-REEL contains a fully integrated clock generator and requires no external timing components. All conversion timing-including SHA hold, SAR sequencing, and data latch-is derived from its internal oscillator. External clock input is not supported; timing is controlled solely by CE, CS, R/C, and A0 signal edges per the truth table in the datasheet.
Can the AD1674JRZ-REEL be used in bipolar input mode without external components?
Yes, the AD1674JRZ-REEL supports ±5 V and ±10 V bipolar operation using only two external 50 Ω resistors: one connecting REF OUT to BIP OFF, and another connecting REF OUT to REF IN. These resistors configure the internal laser-trimmed scaling network-no op-amps, level shifters, or external references are needed to achieve full 12-bit accuracy in bipolar mode.
Is the AD1674JRZ-REEL pin-compatible with the AD574A?
Yes, the AD1674JRZ-REEL uses the exact same 28-pin SOIC footprint and signal mapping as the industry-standard AD574A, including identical pin numbers for VLOGIC, CE, CS, R/C, A0, 12/8, STS, DB0–DB11, REF IN, REF OUT, BIP OFF, 10 VIN, 20 VIN, AGND, DGND, VCC, and VEE. This allows direct PCB-level replacement without layout changes.
What power supply configurations does the AD1674JRZ-REEL support?
The AD1674JRZ-REEL supports dual analog supplies (VCC = +12 V or +15 V; VEE = –12 V or –15 V) and a separate +5 V digital supply (VLOGIC). It tolerates VCC/VEE variations of ±5% (+11.4 V to +16.5 V / –16.5 V to –11.4 V) and VLOGIC of +4.5 V to +5.5 V. Operation at ±12 V is explicitly characterized and guaranteed in all specifications.
AD1674JRZ-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:
- 0°C ~ 70°C
- Supplier Device Package:
- 28-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD1674JRZ-REEL FAQ
1.How can I place an order for AD1674JRZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD1674JRZ-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 AD1674JRZ-REEL reliable?
The price and inventory of AD1674JRZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD1674JRZ-REEL is usually 5 days.
3.What payment methods are accepted for AD1674JRZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD1674JRZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD1674JRZ-REEL?
AD1674JRZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD1674JRZ-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 AD1674JRZ-REEL?
For technical support, including AD1674JRZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD1674JRZ-REEL requirements.
6.How does Aetrix verify that AD1674JRZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD1674JRZ-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 AD1674JRZ-REEL meets industry standards.
7.What is the process for return or replacement of AD1674JRZ-REEL?
All AD1674JRZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD1674JRZ-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 AD1674JRZ-REEL part is unused and in its original packaging.
Return procedure for AD1674JRZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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