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Analog Devices Inc. AD7892ANZ-3
- Part No.:
- AD7892ANZ-3
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-DIP (0.300", 7.62mm)
- Datasheet:
-
AD7892ANZ-3.pdf
- Description:
- IC ADC 12BIT SAR 24DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,721
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Product details
Overview
AD7892ANZ-3 from Analog Devices is a 12-bit, single-supply successive approximation ADC with ±2.5 V analog input range, 600 kSPS throughput rate, 1.47 µs conversion time, and integrated track/hold amplifier - used in high-speed data acquisition systems for industrial process control and motor feedback sensing.
For engineers reviewing the AD7892ANZ-3 datasheet, AD7892ANZ-3 pinout, AD7892ANZ-3 application, or AD7892ANZ-3 equivalent, this page delivers verified specifications, interface timing constraints, real-world use cases, and validated alternative parts - all grounded in Analog Devices' official AD7892 Rev. C documentation.
Technical Context
The AD7892ANZ-3 implements a LC2MOS-based successive approximation architecture with on-chip track/hold, internal +2.5 V reference, and dual-mode digital interface (parallel 12-bit or 3-wire serial). Its ±2.5 V input range is fixed and distinct from the ±10 V/±5 V (AD7892-1) or 0–2.5 V (AD7892-2) variants.
Conversion is triggered by CONVST rising edge; EOC falling edge signals completion; RD/CS enable parallel readout; MODE selects interface mode; STANDBY reduces power to 75 µW typical. The device requires no external clock for parallel operation but uses SCLK/RFS/SDATA in serial mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - guarantees monotonic output with no missing codes over full temperature range. |
| Throughput Rate | 600 kSPS - maximum sustained sampling rate enabled by 1.47 µs conversion + 200 ns acquisition time. |
| Analog Input Range | ±2.5 V - differential input range referenced to AGND; supports bipolar sensor signals without external scaling. |
| Reference Source | +2.5 V internal (REF OUT/REF IN pin) - ±10 mV error at +25°C; 25 ppm/°C tempco; decoupling with 0.1 µF ceramic required. |
| Power Consumption | 60 mW typical at +5 V - enables portable or thermally constrained designs; drops to 75 µW in standby mode. |
| Differential Nonlinearity | ±1 LSB max - ensures accurate code transitions across full scale; critical for closed-loop control fidelity. |
| Signal-to-(Noise+Distortion) | 70 dB min at 100 kHz input - validates dynamic performance for medium-bandwidth signal conditioning. |
Pinout & Package
AD7892ANZ-3 is housed in a 24-lead, 0.3" wide plastic DIP (N-24 package), with through-hole mounting and industry-standard footprint compatible with legacy PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Positive supply | +5 V ±5% input; powers analog and digital sections; must be decoupled locally. |
| STANDBY (Pin 2) | Power mode control | Logic high = active; logic low = standby (75 µW typical); exit requires 30 µs delay before next CONVST. |
| VIN2 (Pin 3) | Analog input reference | Must be connected to AGND; left unconnected only if unused; not for signal routing in AD7892-3. |
| VIN1 (Pin 4) | Main analog input | Accepts ±2.5 V differential input; overvoltage tolerant to ±7 V; input resistance = 2 kΩ min. |
| REF OUT/REF IN (Pin 5) | Reference I/O | Provides +2.5 V reference output or accepts external +2.5 V source; 5.5 kΩ output impedance. |
| AGND (Pin 6) | Analog ground | Separate ground return for track/hold, DAC, and comparator; must be star-connected to DGND at single point. |
| MODE (Pin 7) | Interface selection | Logic high = parallel mode (DB0–DB11 active); logic low = serial mode (RFS/SCLK/SDATA active). |
| DB11/LOW (Pin 8) | Data bit 11 / test pin | In parallel mode: MSB output; in serial mode: must be tied low - not floating. |
| DB0 (Pin 20) | Data bit 0 (LSB) | Three-state TTL-compatible output; two's complement coding; high-impedance when CS/RD inactive. |
| CONVST (Pin 24) | Start conversion | Rising-edge-triggered; initiates track→hold transition and ADC cycle; aperture delay = 15 ns typ. |
Key Features
| Feature | Design Value |
|---|---|
| Single +5 V supply operation | Eliminates need for dual-rail supplies in mixed-signal systems; simplifies power design and reduces BOM count. |
| Integrated track/hold amplifier | Acquires ±2.5 V input to 12-bit accuracy in ≤200 ns - enables faithful digitization of fast transients without external components. |
| Dual-interface flexibility | Parallel (12-bit bus) or serial (3-wire RFS/SCLK/SDATA) selection via MODE pin - adapts to MCU resource constraints or layout density needs. |
| Overvoltage protection | Withstands ±7 V on VIN1 without damage - protects against sensor fault conditions or transient coupling in industrial environments. |
| Low-power standby mode | Reduces IDD to 75 µW typical - extends battery life in portable DAQ or enables duty-cycled sampling in energy-sensitive applications. |
Applications
| Industrial Motor Control | Portable Data Acquisition |
|---|---|
Use Scenario: Real-time current and position feedback sampling in servo drives with 10–100 kHz bandwidth requirements. IC Role / Device Role / Timing Role: ADC front-end capturing ±2.5 V encoder or shunt voltage outputs at 600 kSPS with deterministic 1.47 µs latency. Use Value: Enables high-fidelity field-oriented control (FOC) algorithms by preserving phase coherence and minimizing quantization-induced torque ripple. |
Use Scenario: Battery-powered handheld oscilloscopes or vibration analyzers requiring >500 kSPS sampling with minimal thermal dissipation. IC Role / Device Role / Timing Role: Core A/D converter operating from single Li-ion cell (via +5 V LDO), entering standby between bursts to conserve energy. Use Value: Delivers 12-bit resolution at 600 kSPS while consuming only 60 mW - extends runtime beyond 8 hours per charge in typical configurations. |
| Automated Test Equipment (ATE) | Power Quality Monitoring |
Use Scenario: Multi-channel synchronized voltage/current capture in benchtop ATE systems validating switching power supply behavior. IC Role / Device Role / Timing Role: High-speed ADC interfaced via parallel bus to FPGA controller; EOC-driven interrupt ensures precise timestamp alignment across channels. Use Value: 70 dB SNR at 100 kHz allows accurate harmonic analysis up to 5th order - meeting IEC 61000-4-30 Class A compliance thresholds. |
Use Scenario: Continuous monitoring of AC mains voltage distortion in smart grid edge nodes using isolated ±2.5 V sensor interfaces. IC Role / Device Role / Timing Role: Bipolar-input ADC digitizing conditioned transformer outputs; internal +2.5 V reference ensures stable gain across temperature swings. Use Value: ±1 LSB DNL and ±4 LSB full-scale error support <0.1% RMS voltage measurement accuracy - sufficient for ANSI C12.20 revenue-grade metering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7892BN-3 | Same N-24 DIP package and ±2.5 V input range, but specified for ±1 LSB relative accuracy (vs. ±1.5 LSB for AD7892ANZ-3). | Required where tighter linearity is needed for precision calibration or metrology-grade measurements. | Select AD7892BN-3 when end-point nonlinearity must be ≤±1 LSB across –40°C to +85°C. |
| AD7892AR-3 | Identical electrical specs but in 24-lead SOIC (R-24) package - smaller footprint, surface-mount compatible, higher thermal impedance (75°C/W vs. 105°C/W). | Suitable for space-constrained PCBs or automated assembly lines requiring SMT placement. | Choose AD7892AR-3 for volume production with reflow soldering and reduced board area. |
Compared with AD7892BN-3 and AD7892AR-3, the AD7892ANZ-3 offers the same 600 kSPS throughput and ±2.5 V input range but trades tighter DC accuracy for lower cost (A-grade) and through-hole manufacturability - making it optimal for industrial DAQ where moderate linearity suffices and legacy assembly processes apply.
Availability
AD7892ANZ-3 is available at Aetrix Electronics and suitable for industrial motor control, portable data acquisition, automated test equipment, and power quality monitoring requiring stable component supply across extended lifecycle programs.
Supply support for AD7892ANZ-3 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 AD7892 product line was designed for high-speed, low-power data acquisition in resource-constrained embedded systems - emphasizing single-supply operation, integrated signal conditioning, and flexible microprocessor interfacing.
FAQ
What is the absolute maximum analog input voltage for AD7892ANZ-3?
The AD7892ANZ-3 supports ±7 V on VIN1 under absolute maximum ratings - exceeding its ±2.5 V operational range. This overvoltage tolerance protects against transient spikes or sensor faults without damaging the input stage, provided AGND remains stable and VDD stays within –0.3 V to +7 V.
Does AD7892ANZ-3 require an external clock for parallel interface operation?
No, AD7892ANZ-3 does not require an external clock for parallel mode. Conversion is initiated by the rising edge of CONVST, and data becomes valid after EOC pulses low. Timing is governed solely by CONVST, RD, and CS signals - no master clock is needed for basic readout.
How is the reference configured on AD7892ANZ-3?
AD7892ANZ-3 uses its internal +2.5 V reference by default on the REF OUT/REF IN pin. To enable it, connect a 0.1 µF ceramic capacitor from Pin 5 to AGND. An external +2.5 V reference (e.g., AD780) may overdrive this pin, but the internal reference remains disabled when external voltage is applied.
What happens to AD7892ANZ-3 outputs during standby mode?
During standby mode (STANDBY = low), AD7892ANZ-3 disables its internal reference, track/hold, and ADC core. All digital outputs (DB0–DB11, EOC) enter high-impedance state, and power drops to 75 µW typical. A 30 µs delay is required after STANDBY returns high before issuing CONVST.
Is AD7892ANZ-3 pin-compatible with other AD7892 variants like AD7892AN-1?
Yes, AD7892ANZ-3 shares identical N-24 DIP pinout and package dimensions with all AD7892-x variants (e.g., AD7892AN-1, AD7892AN-2). However, input range, throughput, and accuracy differ - so firmware and analog front-end must be validated per variant despite mechanical compatibility.
AD7892ANZ-3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 600k
- Number of Inputs:
- 2
- Input Type:
- Single Ended
- Data Interface:
- SPI, 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:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 24-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
AD7892ANZ-3 FAQ
1.How can I place an order for AD7892ANZ-3 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7892ANZ-3 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 AD7892ANZ-3 reliable?
The price and inventory of AD7892ANZ-3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7892ANZ-3 is usually 5 days.
3.What payment methods are accepted for AD7892ANZ-3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7892ANZ-3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7892ANZ-3?
AD7892ANZ-3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7892ANZ-3 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 AD7892ANZ-3?
For technical support, including AD7892ANZ-3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7892ANZ-3 requirements.
6.How does Aetrix verify that AD7892ANZ-3 is sourced from the original manufacturer or authorized distributors?
All AD7892ANZ-3 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 AD7892ANZ-3 meets industry standards.
7.What is the process for return or replacement of AD7892ANZ-3?
All AD7892ANZ-3 units undergo pre-shipment inspection (PSI). If there is an issue with AD7892ANZ-3, 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 AD7892ANZ-3 part is unused and in its original packaging.
Return procedure for AD7892ANZ-3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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