My Inquiry
My Account
Analog Devices Inc. AD7899ARSZ-2REEL
- Part No.:
- AD7899ARSZ-2REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
AD7899ARSZ-2REEL.pdf
- Description:
- IC ADC 14BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,474
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7899ARSZ-2REEL from Analog Devices is a 14-bit, 400 kSPS successive-approximation ADC with integrated track/hold, 2.5 V reference, and high-speed parallel interface. It operates from a single 5 V supply, supports 0 V to 2.5 V and 0 V to 5 V unipolar input ranges, and delivers 78 dB SNR at 100 kHz input-used in precision data acquisition systems for industrial process control and automated test equipment.
For engineers reviewing the AD7899ARSZ-2REEL datasheet, AD7899ARSZ-2REEL pinout, AD7899ARSZ-2REEL application, or AD7899ARSZ-2REEL equivalent, key selection criteria include unipolar input range support, 2.2 µs conversion time, 0.3 µs track/hold acquisition, 3 V/5 V logic compatibility via VDRIVE, and SOIC-28 package suitability for space-constrained embedded signal chains.
Technical Context
The AD7899ARSZ-2REEL implements a laser-trimmed internal clock oscillator (enabling 400 kSPS throughput) or accepts external CLKIN up to 6.5 MHz for timing control. Its track/hold amplifier achieves 0.3 µs acquisition to ±1/2 LSB with 4.5 MHz –3 dB bandwidth, ensuring accurate digitization of fast-changing analog signals without aperture jitter degradation.
Conversion is initiated by CONVST rising edge, which places the track/hold into hold mode and triggers BUSY/EOC assertion. Data output uses straight binary coding on DB0–DB13, with CS/RD-controlled parallel readout and VDRIVE-selectable 3 V or 5 V I/O voltage-enabling direct interfacing to both legacy 5 V and modern low-voltage microcontrollers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit-provides 16,384 discrete output codes for high-fidelity signal representation in measurement-critical applications. |
| Throughput Rate | 400 kSPS-supports real-time sampling of signals up to 200 kHz Nyquist bandwidth without aliasing. |
| Conversion Time | 2.2 µs max-enables deterministic timing control in closed-loop control systems requiring rapid feedback. |
| Input Range | 0 V to 2.5 V or 0 V to 5 V-unipolar configuration simplifies sensor interfacing for pressure, temperature, and current-sense amplifiers. |
| SNR @ 100 kHz | 78 dB min-ensures >12.6 effective number of bits (ENOB) for high-accuracy DC and AC measurements. |
| Power Dissipation | 80 mW typ at 5 V-low active power enables thermal management in dense PCB layouts and portable instrumentation. |
| Track/Hold Acquisition | 0.3 µs max-minimizes dead time between conversions, maximizing channel scanning efficiency in multiplexed DAQ systems. |
Pinout & Package
The AD7899ARSZ-2REEL is housed in a 28-lead Shrink Small Outline Package (SSOP), RoHS-compliant, with 0.65 mm lead pitch and exposed pad for thermal performance. Pin 1 is marked by a dot; device orientation follows standard SSOP top-view labeling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF | Reference Input/Output | Provides access to internal 2.5 V ±20 mV reference; also accepts external 2.5 V ±5% source-enables system-level reference synchronization or improved accuracy. |
| VINA / VINB | Analog Inputs | Differential-capable inputs configured for 0 V–2.5 V or 0 V–5 V unipolar operation; overvoltage tolerant to –1 V / +18 V-protects against transients in industrial environments. |
| CONVST | Convert Start Input | Rising-edge-triggered control signal that initiates conversion and places track/hold into hold mode-synchronizes sampling across multiple AD7899 devices. |
| BUSY/EOC | Status Output | Open-drain dual-function pin indicating conversion progress (BUSY) or completion (EOC)-eliminates need for polling or additional timing circuitry. |
| DB0–DB13 | Data Outputs | 14-bit parallel bus with three-state outputs; straight binary coding for AD7899ARSZ-2REEL-directly compatible with 16-bit microcontroller data buses. |
| VDRIVE | Digital I/O Supply | Separate 3 V or 5 V supply for digital interface-allows seamless connection to 3 V processors without level shifters or voltage translation. |
| STBY | Standby Mode Control | Active-low logic input reducing power to 20 µA typ-enables ultra-low-power sleep states in battery-operated data loggers. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2.5 V Reference | ±10 mV error at 25°C with 25 ppm/°C TC-reduces BOM count and eliminates external reference calibration in cost-sensitive designs. |
| Overvoltage Protection | Analog inputs withstand –1 V to +18 V-prevents latch-up or damage during sensor disconnect, ESD events, or power sequencing faults. |
| 3 V / 5 V Logic Compatibility | VDRIVE pin decouples I/O voltage from VDD-enables mixed-voltage system integration without external translators or risk of I/O contention. |
| Low Aperture Jitter | 25 ps typ-preserves SNR at high input frequencies by minimizing sampling-time uncertainty in dynamic signal analysis. |
| Single 5 V Supply Operation | No dual-rail or charge-pump required-simplifies power architecture and reduces layout complexity in isolated or space-constrained modules. |
Applications
| Industrial Process Monitoring | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Continuous monitoring of 4–20 mA current loops and thermocouple outputs in PLC analog input modules. IC Role / Device Role / Timing Role: Primary ADC capturing sensor data at 100–400 kSPS with deterministic CONVST-triggered sampling synchronized to system clock. Use Value: Unipolar 0 V–5 V input range matches industrial sensor output scaling; 78 dB SNR ensures <0.025% measurement uncertainty over full temperature range. | Use Scenario: High-speed stimulus-response testing of op-amps and filters using programmable waveform generation and capture. IC Role / Device Role / Timing Role: Digitizer in front-end acquisition path, accepting analog outputs from DUT and delivering parallel data to FPGA-based processing engine. Use Value: 2.2 µs conversion + 0.3 µs acquisition enables tight loop timing; straight binary output simplifies FPGA data alignment and reduces latency. |
| Portable Data Loggers | Motor Drive Current Sensing |
Use Scenario: Battery-powered environmental sensors logging temperature, humidity, and air quality over extended periods. IC Role / Device Role / Timing Role: Low-power ADC operating in burst mode-activated by microcontroller, converting sensor outputs, then entering STBY mode. Use Value: 20 µA standby current extends battery life; internal 2.5 V reference eliminates need for external precision reference, saving board area and cost. | Use Scenario: Real-time phase current measurement in three-phase inverter drives for field-oriented control (FOC). IC Role / Device Role / Timing Role: Isolated analog front-end ADC capturing shunt voltage with precise timing relative to PWM edges. Use Value: Overvoltage tolerance (–1 V to +18 V) handles switching noise spikes; 4.5 MHz track/hold bandwidth preserves current waveform fidelity up to 100 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 14-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8325IPW | 16-bit resolution, 100 kSPS, SPI interface, no internal reference | Higher resolution but lower speed; serial interface increases MCU overhead vs. parallel AD7899ARSZ-2REEL | Select when resolution >14-bit is mandatory and throughput ≤100 kSPS suffices; requires external reference and level-shifting for 3 V systems. |
| MAX1166BCAP+ | 14-bit, 250 kSPS, internal reference, SPI interface, 2.7–5.25 V supply | Lower throughput and serial interface; wider supply range but no VDRIVE flexibility for mixed-voltage I/O | Select for ultra-low-voltage battery operation (2.7 V min) where 250 kSPS meets timing needs and SPI simplifies routing over parallel bus. |
Compared with ADS8325IPW and MAX1166BCAP+, the AD7899ARSZ-2REEL uniquely balances 400 kSPS parallel throughput, unipolar input flexibility, and VDRIVE-configurable I/O-making it optimal for high-speed embedded DAQ where timing determinism and interface simplicity are critical.
Availability
AD7899ARSZ-2REEL is available at Aetrix Electronics and suitable for industrial process monitoring, automated test equipment, portable data loggers, and motor drive current sensing requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AD7899ARSZ-2REEL 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 AD7899 product line delivers high-speed, low-power, precision SAR ADCs with integrated references and flexible interfaces-designed specifically for demanding data acquisition in industrial automation, test instrumentation, and real-time control systems.
FAQ
What input voltage ranges does the AD7899ARSZ-2REEL support?
The AD7899ARSZ-2REEL supports unipolar input ranges of 0 V to 2.5 V and 0 V to 5 V, as confirmed in the Analog Devices datasheet revision A. It does not support bipolar ranges like ±10 V or ±2.5 V-those are assigned to other variants (e.g., AD7899-1 and AD7899-3). The input structure uses resistor scaling and track/hold circuitry optimized for these specific unipolar spans, and output coding is straight binary per the AD7899-2 specification.
Does the AD7899ARSZ-2REEL include an internal voltage reference?
Yes, the AD7899ARSZ-2REEL integrates a 2.5 V reference with ±10 mV initial error at 25°C and ±20 mV maximum error over temperature. This reference is accessible via the VREF pin and can be overdriven by an external 2.5 V ±5% source. The internal reference eliminates the need for external components in most applications, and its 6 kΩ output impedance requires buffering only if used externally-confirmed in the Reference Section of the official datasheet.
How is the AD7899ARSZ-2REEL interfaced to a 3 V microcontroller?
The AD7899ARSZ-2REEL interfaces directly to 3 V microcontrollers using the VDRIVE pin, which supplies the digital I/O voltage independently from VDD. When VDRIVE is set to 3 V ±10%, all logic inputs (CS, RD, CONVST, CLKIN, STBY) accept 3 V-compatible thresholds, and outputs (DB0–DB13, BUSY/EOC) drive to valid 3 V logic levels-verified in the Logic Inputs/Outputs specifications table. No level shifters are required.
What is the conversion timing behavior of the AD7899ARSZ-2REEL?
The AD7899ARSZ-2REEL completes conversion in 2.2 µs maximum using its internal laser-trimmed oscillator, achieving 400 kSPS throughput. Conversion starts on the rising edge of CONVST, and BUSY/EOC goes high immediately and remains asserted until conversion ends. Data is valid after RD falling edge with 35 ns access time (VDRIVE = 5 V) or 40 ns (VDRIVE = 3 V), per Timing Characteristics Table on page 4 of the datasheet.
Is the AD7899ARSZ-2REEL pin-compatible with other AD7899 variants?
No, the AD7899ARSZ-2REEL is not pin-compatible with AD7899-1 or AD7899-3 variants in terms of functional pin assignment-though all share the same 28-pin SSOP package and mechanical footprint. Key differences include output coding (straight binary for -2 vs. two's complement for -1/-3) and analog input configuration logic. Interchanging variants without redesigning signal routing and firmware will cause incorrect data interpretation.
AD7899ARSZ-2REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 400k
- 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:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7899ARSZ-2REEL FAQ
1.How can I place an order for AD7899ARSZ-2REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7899ARSZ-2REEL 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 AD7899ARSZ-2REEL reliable?
The price and inventory of AD7899ARSZ-2REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7899ARSZ-2REEL is usually 5 days.
3.What payment methods are accepted for AD7899ARSZ-2REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7899ARSZ-2REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7899ARSZ-2REEL?
AD7899ARSZ-2REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7899ARSZ-2REEL 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 AD7899ARSZ-2REEL?
For technical support, including AD7899ARSZ-2REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7899ARSZ-2REEL requirements.
6.How does Aetrix verify that AD7899ARSZ-2REEL is sourced from the original manufacturer or authorized distributors?
All AD7899ARSZ-2REEL 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 AD7899ARSZ-2REEL meets industry standards.
7.What is the process for return or replacement of AD7899ARSZ-2REEL?
All AD7899ARSZ-2REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7899ARSZ-2REEL, 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 AD7899ARSZ-2REEL part is unused and in its original packaging.
Return procedure for AD7899ARSZ-2REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7899ARSZ-2REEL 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…
