My Inquiry
My Account
Analog Devices Inc. AD7892AN-1
- Part No.:
- AD7892AN-1
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-DIP (0.300", 7.62mm)
- Datasheet:
-
AD7892AN-1.pdf
- Description:
- IC ADC 12BIT SAR 24DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,562
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7892AN-1 from Analog Devices is a 12-bit, single-supply, LC2MOS analog-to-digital converter with ±5 V or ±10 V input range, 500 kSPS throughput rate, 1.6 µs conversion time, and on-chip track/hold amplifier-designed for precision data acquisition in industrial instrumentation and sensor signal conditioning systems.
For engineers reviewing the AD7892AN-1 datasheet, AD7892AN-1 pinout, AD7892AN-1 application, or AD7892AN-1 equivalent, this page delivers verified electrical specifications, interface mode behavior (parallel/serial), absolute maximum ratings, real-world timing constraints, and validated alternative parts for system-level design continuity.
Technical Context
The AD7892AN-1 implements a successive approximation ADC architecture with integrated track/hold, internal +2.5 V reference, and dual-mode digital interface controlled by the MODE pin. Its analog front-end supports bipolar input scaling via VIN1/VIN2 configuration, enabling ±10 V or ±5 V full-scale ranges without external gain stages.
It operates exclusively from a single +5 V ±5% supply, draws 18 mA typical in normal mode, and enters low-power standby (<100 µA) when STANDBY is logic low. Conversion is triggered by rising-edge CONVST, with EOC signaling completion and RD/CS enabling parallel data readout within defined timing windows (e.g., t6 ≤ 40 ns data access).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit-guarantees no missing codes across full operating temperature range. |
| Input Range | ±10 V or ±5 V-selected by VIN2 connection to AGND or VIN1; enables direct interfacing with industrial transducers. |
| Throughput Rate | 500 kSPS-supports real-time monitoring of fast-changing analog signals such as motor current or vibration waveforms. |
| Conversion Time | 1.6 µs max-defines minimum inter-conversion interval; critical for deterministic sampling in closed-loop control. |
| Relative Accuracy | ±1.5 LSB max-limits end-point nonlinearity error in calibration-sensitive applications like precision weigh scales. |
| Power Dissipation | 90 mW max at +5 V-enables use in thermally constrained embedded modules without forced cooling. |
| Overvoltage Tolerance | ±17 V on VIN1-protects against transient surges in industrial field wiring without external clamping diodes. |
Pinout & Package
AD7892AN-1 is housed in a 24-lead, 0.3" wide plastic DIP (N-24 package), with lead pitch of 0.1" and standard through-hole mounting compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive Supply | +5 V ±5% main power rail; decoupling required near pin for noise immunity. |
| STANDBY | Power Control Input | Logic high = active mode; logic low = standby (75 µW typical), enabling rapid wake-up in battery-powered systems. |
| VIN2 | Analog Range Selector | Grounded → ±10 V range; tied to VIN1 → ±5 V range; must not float or connect to other potentials. |
| VIN1 | Main Analog Input | Accepts bipolar ±10 V or ±5 V signals; overvoltage protected up to ±17 V relative to AGND. |
| REF OUT/REF IN | Reference Interface | Provides internal +2.5 V reference (±10 mV @ +25°C) or accepts external reference; requires 0.1 µF ceramic cap to AGND. |
| MODE | Interface Selection | High = parallel mode (DB0–DB11 outputs); low = serial mode (RFS/SCLK/SDATA active). |
| CONVST | Start Trigger | Rising edge initiates track→hold transition and starts conversion sequence; aperture delay ~15 ns. |
| EOC | Status Output | Active-low pulse (~100 ns width) indicates conversion completion; usable as microprocessor interrupt source. |
| RD & CS | Data Access Controls | Both low enable three-state DB0–DB11 outputs; timing-critical (t4 = 0 ns setup, t6 ≤ 40 ns access). |
| DB0–DB11 | Data Outputs | Parallel 12-bit two's complement output; DB0 = LSB, DB11 = MSB; high-impedance when RD/CS inactive. |
Key Features
| Feature | Design Value |
|---|---|
| Single +5 V operation | Eliminates need for dual supplies or charge pumps-reduces BOM count and layout complexity in portable test equipment. |
| On-chip track/hold amplifier | Acquires full-scale sine waves to 12-bit accuracy in ≤400 ns-enables accurate digitization of signals up to ~300 kHz bandwidth. |
| Bipolar input scaling | Configurable ±10 V / ±5 V ranges via VIN2 routing-avoids external op-amp gain stages for legacy industrial sensor interfaces. |
| Overvoltage protection | Withstands ±17 V on VIN1 without damage-increases robustness in noisy factory-floor environments with long cable runs. |
| Dual interface modes | Hardware-selectable parallel (12-bit bus) or 3-wire serial (RFS/SCLK/SDATA)-supports both high-speed MCU interfacing and space-constrained microcontroller designs. |
Applications
| Industrial Process Monitoring | Motor Drive Current Sensing |
|---|---|
Use Scenario: Continuous acquisition of 4–20 mA loop signals conditioned through precision resistors in PLC analog input modules. IC Role / Device Role / Timing Role: Primary ADC performing synchronized sampling of multiple channels at 500 kSPS with ±10 V input range and 12-bit resolution. Use Value: Enables sub-0.1% full-scale measurement accuracy across –40°C to +85°C, meeting IEC 61000-6-2 immunity requirements without recalibration. | Use Scenario: Real-time phase current sampling in three-phase inverter drives using shunt resistors and isolated amplifiers. IC Role / Device Role / Timing Role: High-speed ADC capturing current transients during PWM switching edges; triggered by CONVST synchronized to gate driver timing. Use Value: 1.6 µs conversion time and 400 ns track/hold acquisition allow sampling within dead-time intervals, improving FOC algorithm fidelity. |
| Portable Data Loggers | Test & Measurement Front Ends |
Use Scenario: Battery-powered environmental sensor nodes measuring temperature, pressure, and humidity with ±5 V sensor outputs. IC Role / Device Role / Timing Role: Low-power ADC operating from single Li-ion cell (via +5 V regulator), entering standby between samples to extend runtime. Use Value: 75 µW standby power and 500 kSPS capability support burst-mode logging at 10 kSPS average rate with >1-year battery life. | Use Scenario: Modular oscilloscope or spectrum analyzer input stage requiring flexible input scaling and minimal external components. IC Role / Device Role / Timing Role: Precision ADC providing calibrated ±10 V input range with internal reference, supporting auto-ranging via VIN2 reconfiguration. Use Value: Eliminates need for external reference IC and programmable gain amplifier, reducing component count and board area by >30%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, single-supply ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7892BN-1 | ±1 LSB relative accuracy vs. ±1.5 LSB for AD7892AN-1; otherwise identical specs and pinout. | Suitable where tighter linearity is required for calibration-critical metrology instruments. | Select AD7892BN-1 when system-level INL budget demands <±1 LSB performance across temperature. |
| AD7892AR-1 | Same accuracy as AD7892AN-1 but in 24-lead SOIC (R-24) package instead of plastic DIP (N-24). | Preferred for surface-mount production, higher density layouts, or improved thermal performance (θJA = 75°C/W vs. 105°C/W). | Choose AD7892AR-1 for automated assembly, reduced footprint, or better power dissipation in compact enclosures. |
Compared with AD7892BN-1 and AD7892AR-1, the AD7892AN-1 offers the lowest-cost plastic DIP option with standard ±1.5 LSB linearity-ideal for cost-sensitive industrial OEMs prioritizing ease of prototyping and through-hole manufacturing.
Availability
AD7892AN-1 is available at Aetrix Electronics and suitable for industrial process monitoring, motor drive current sensing, and portable data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7892AN-1 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, headquartered in Wilmington, MA.
The AD7892 product line delivers high-speed, low-power, single-supply 12-bit ADCs with integrated track/hold and flexible digital interfaces-engineered for industrial automation, test equipment, and sensor signal conditioning where precision, robustness, and design simplicity are essential.
FAQ
What input voltage ranges does the AD7892AN-1 support?
The AD7892AN-1 supports two bipolar input ranges: ±10 V (when VIN2 is grounded) and ±5 V (when VIN2 is tied to VIN1). It does not support unipolar or ±2.5 V ranges-those are exclusive to AD7892-2 and AD7892-3 variants. The ±17 V overvoltage tolerance applies only to VIN1 under these configurations.
How does the MODE pin affect AD7892AN-1 interface operation?
When MODE is logic high, the AD7892AN-1 enables its 12-bit parallel interface (DB0–DB11 active, RD/CS controlled). When MODE is logic low, it activates the 3-wire serial interface (RFS, SCLK, SDATA), disabling DB2–DB11 and repurposing DB3/RFS, DB4/SCLK, and DB5/SDATA. This hardware-selectable mode eliminates firmware configuration overhead.
Can the AD7892AN-1 use an external reference, and what are the requirements?
Yes-the AD7892AN-1 accepts an external +2.5 V reference applied to the REF OUT/REF IN pin. The external source must sink/source up to ±100 µA and maintain ±0.1% stability to avoid degrading the specified ±4 LSB full-scale error. Compatible references include AD780 and REF43; internal reference error is ±10 mV at +25°C.
What is the minimum time between consecutive conversions for the AD7892AN-1?
The AD7892AN-1 requires ≥2.0 µs between rising edges of CONVST to ensure proper track/hold acquisition (400 ns) and conversion (1.6 µs). Attempting faster rates risks missing codes due to incomplete settling. The EOC pulse width is ~100 ns, and RD must be asserted ≥200 ns before the next CONVST edge per timing diagram Figure 2.
Is the AD7892AN-1 pin-compatible with other AD7892 variants like AD7892AN-2 or AD7892AN-3?
No-while all AD7892 variants share the same N-24 DIP package and pinout, their input ranges, conversion rates, and output coding differ fundamentally. AD7892AN-2 uses straight binary coding and 0 V to +2.5 V range; AD7892AN-3 supports ±2.5 V and 600 kSPS. Interchanging them without circuit redesign will cause incorrect data interpretation or saturation.
AD7892AN-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 500k
- 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:
- -
AD7892AN-1 FAQ
1.How can I place an order for AD7892AN-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7892AN-1 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 AD7892AN-1 reliable?
The price and inventory of AD7892AN-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7892AN-1 is usually 5 days.
3.What payment methods are accepted for AD7892AN-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7892AN-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7892AN-1?
AD7892AN-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7892AN-1 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 AD7892AN-1?
For technical support, including AD7892AN-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7892AN-1 requirements.
6.How does Aetrix verify that AD7892AN-1 is sourced from the original manufacturer or authorized distributors?
All AD7892AN-1 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 AD7892AN-1 meets industry standards.
7.What is the process for return or replacement of AD7892AN-1?
All AD7892AN-1 units undergo pre-shipment inspection (PSI). If there is an issue with AD7892AN-1, 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 AD7892AN-1 part is unused and in its original packaging.
Return procedure for AD7892AN-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7892AN-1 Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
