My Inquiry
My Account
Analog Devices Inc. AD7884BP
- Part No.:
- AD7884BP
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
AD7884BP.pdf
- Description:
- IC ADC 16BIT SAMPLING HS 44-PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,400
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7884BP from Analog Devices is a 16-bit monolithic sampling analog-to-digital converter (ADC) with internal sample-and-hold, two-pass flash architecture, ±5 V/±3 V dual input ranges, 5.3 µs conversion time, and 166 kSPS throughput-designed for high-precision data acquisition in industrial control and medical instrumentation.
For engineers reviewing the AD7884BP datasheet, AD7884BP pinout, AD7884BP application, or AD7884BP equivalent, this page delivers verified specifications, package mapping to 44-lead PLCC, functional pin definitions, real-world application contexts, and validated alternative options for system-level design continuity.
Technical Context
The AD7884BP implements a two-pass flash ADC architecture: first pass digitizes the 9 MSBs using a 9-bit ADC and 16-bit DAC; second pass processes the residue error amplified by an on-chip residue amplifier to generate the 7 LSBs. Conversion is initiated asynchronously via CONVST and completed in ≤5.3 µs with overlap between acquisition and conversion phases.
It operates from ±5 V analog/digital supplies (VDD = +5 V, VSS = –5 V), requires a 3 V reference (VREF+S = 3 V), and supports twos complement output coding. Input range selection is hardware-configured via ±5VINF/±5VINS or ±3VINF/±3VINS pin connections-no internal register programming required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16 bits - guarantees no missing codes over full scale |
| Conversion Time | 5.3 µs max - enables 166 kSPS sustained throughput with overlapped acquisition |
| Input Ranges | ±5 V or ±3 V - selectable via external pin strapping, not software |
| Integral Nonlinearity | ±0.0075 % FSR max - ensures <1 LSB error across full temperature range (–40°C to +85°C) |
| Signal-to-Noise+Distortion | 84 dB min at 1 kHz - meets high-fidelity requirements for medical and test equipment |
| Power Dissipation | 325 mW max - optimized for thermally constrained industrial enclosures |
| Reference Input | VREF+S = 3 V - mandates external low-noise 3 V reference (e.g., AD780) with ≤35 µV rms noise |
Pinout & Package
The AD7884BP is packaged in a 44-lead Plastic Leaded Chip Carrier (PLCC), designated P-44A per Analog Devices' ordering guide. This surface-mount package features J-leads, 16 mm × 16 mm body size, and integrated heat slug for thermal management in continuous high-speed operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DB0–DB15 | 16-bit parallel data output | Twos complement format; all 16 bits available simultaneously on read cycle |
| CONVST | Asynchronous conversion start | Rising-edge triggered; initiates hold mode in sample-and-hold amplifier after 50 ns aperture delay |
| CS / RD | Chip select and read control | Active-low logic pair enabling microprocessor interface without handshaking overhead |
| BUSY | Conversion status indicator | Active-low open-drain output; goes low at CONVST edge and returns high after 5.3 µs |
| ±5VINF / ±5VINS | Analog input force/sense (±5 V range) | Must be tied to AGND when using ±3 V range; defines input gain path and common-mode rejection |
| VREF+S / VREF+F | Reference sense/force inputs | Accepts 3 V reference; internal trimming ensures precise tracking and minimal gain drift (±2 ppm/°C) |
| AGNDS / AGNDF | Analog ground sense/force | Requires buffered star-ground connection (e.g., AD817) to maintain SNR and THD specs |
| VDD / VSS / AVDD / AVSS | Supply rails | Dual ±5 V supplies; AVDD/AVSS power analog section, VDD/VSS power digital logic and 9-bit ADC |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic 16-bit ADC with S&H | Eliminates external sample-and-hold IC, reducing board area and signal path errors |
| Two-pass flash architecture | Enables 16-bit resolution at 166 kSPS without pipeline latency or calibration firmware |
| Hardware-selectable input ranges | ±5 V or ±3 V configured by pin strapping-no configuration registers or timing constraints |
| Internal oscillator-controlled timing | Removes need for external clock source; simplifies layout and reduces jitter sensitivity |
| Low 120 µVrms noise | Supports 16-bit effective resolution in precision DC-coupled applications (e.g., strain gauge readout) |
Applications
| Industrial Process Monitoring | Medical Diagnostic Imaging |
|---|---|
Use Scenario: Continuous voltage/current monitoring of PLC I/O modules in factory automation systems with ±5 V sensor outputs. IC Role / Device Role / Timing Role: Primary high-speed digitizer interfacing directly to isolation amplifiers and multiplexed analog front-ends. Use Value: 166 kSPS throughput enables real-time closed-loop control at sub-millisecond response times without oversampling penalty. | Use Scenario: Digitizing low-noise analog signals from ultrasound transducer arrays operating in ±3 V range. IC Role / Device Role / Timing Role: Precision front-end ADC in portable imaging devices where SNR >84 dB and THD <–88 dB are mandatory. Use Value: 120 µVrms noise floor and 84 dB SNR ensure diagnostic-grade image fidelity at 12 kHz bandwidth. |
| Automated Test Equipment (ATE) | High-Accuracy Data Loggers |
Use Scenario: Multi-channel voltage measurement subsystem in benchtop ATE platforms requiring traceable 16-bit linearity. IC Role / Device Role / Timing Role: Calibration-reference ADC used to verify DUT output accuracy against NIST-traceable standards. Use Value: ±0.0075 % FSR INL and ±0.05 % FSR bipolar zero error enable single-point calibration across full temperature range. | Use Scenario: Battery-powered environmental sensor node logging temperature, pressure, and humidity with long-term stability. IC Role / Device Role / Timing Role: Low-drift, low-power ADC capturing slow-varying analog signals with minimal self-heating impact. Use Value: ±2 ppm/°C gain TC and ±8 ppm/°C zero TC ensure <0.01 % FSR drift over –40°C to +85°C operating envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed 16-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7884AP | Same 44-lead PLCC package and 166 kSPS performance; ±0.03 % FSR typ gain error vs. ±0.0075 % FSR max for AD7884BP | Suitable for cost-sensitive industrial designs where tighter INL is not required | Select AD7884AP if system-level calibration compensates for higher gain error; AD7884BP preferred for uncalibrated precision use cases |
| AD7885ABP | Identical electrical specs per datasheet Note 3; differs only in 8-bit byte-read interface (DB0–DB7) vs. AD7884BP's 16-bit parallel output | Used where microcontroller has limited data bus width or requires sequential byte reads | Choose AD7885ABP only when 8-bit interface reduces MCU complexity; AD7884BP delivers full 16-bit parallel efficiency |
Compared with AD7884AP and AD7885ABP, the AD7884BP uniquely combines guaranteed ±0.0075 % FSR INL, 16-bit parallel output, and 44-lead PLCC packaging-making it optimal for uncalibrated, high-throughput, space-constrained industrial DAQ systems requiring deterministic timing and minimal firmware overhead.
Availability
AD7884BP is available at Aetrix Electronics and suitable for industrial process monitoring, medical diagnostic imaging, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7884BP 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 AD7884BP belongs to the AD7884/AD7885 family of monolithic 16-bit sampling ADCs engineered for high-speed, high-accuracy data acquisition in demanding industrial and medical environments where resolution, speed, and dc precision must coexist.
FAQ
What is the maximum sampling rate supported by the AD7884BP?
The AD7884BP supports a maximum throughput rate of 166 kSPS, achieved through overlapped acquisition and conversion phases enabled by its two-pass flash architecture. This rate is guaranteed under specified conditions: VDD = +5 V ±5%, VSS = –5 V ±5%, VREF+S = 3 V, and TA = –40°C to +85°C. The 5.3 µs conversion time allows deterministic timing for real-time control loops.
Does the AD7884BP require an external clock source?
No, the AD7884BP does not require an external clock source. It contains an internal oscillator that controls conversion timing. The device is triggered asynchronously via the CONVST input, and all internal timing-including sample-and-hold hold duration and residue amplifier settling-is derived from this on-chip oscillator, simplifying system design and reducing jitter sensitivity.
What are the power supply requirements for the AD7884BP?
The AD7884BP requires dual ±5 V supplies: VDD = +5 V ±5%, VSS = –5 V ±5%, AVDD = +5 V ±5%, and AVSS = –5 V ±5%. The datasheet specifies typical IDD = 25 mA and ISS = 25 mA, yielding ~250 mW typical power dissipation. Decoupling mandates 10 µF tantalum + 0.1 µF ceramic at AVDD/AVSS, and 1 µF ceramic at VDD/VSS pins.
Can the AD7884BP operate with a ±3 V input range?
Yes, the AD7884BP supports both ±5 V and ±3 V analog input ranges. To configure the ±3 V range, connect ±3VINF and ±3VINS to the signal source while tying ±5VINF and ±5VINS to AGND. The input section automatically adjusts gain to –1, delivering 0 V to –3 V to the internal 9-bit ADC. No software or register changes are needed-selection is purely hardware-based.
What is the purpose of the AGNDS and AGNDF pins on the AD7884BP?
The AGNDS (analog ground sense) and AGNDF (analog ground force) pins form a Kelvin connection for the on-chip 9-bit ADC and residue amplifier ground return. Per the datasheet, they must be driven by a low-offset, low-noise buffer amplifier (e.g., AD817) referenced to system AGND. Direct connection degrades INL, bipolar zero, and gain error-though SNR and THD remain largely unaffected.
AD7884BP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 44-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 166k
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- Parallel
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 2
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 44-PLCC (16.59x16.59)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7884BP FAQ
1.How can I place an order for AD7884BP through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7884BP 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 AD7884BP reliable?
The price and inventory of AD7884BP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7884BP is usually 5 days.
3.What payment methods are accepted for AD7884BP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7884BP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7884BP?
AD7884BP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7884BP 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 AD7884BP?
For technical support, including AD7884BP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7884BP requirements.
6.How does Aetrix verify that AD7884BP is sourced from the original manufacturer or authorized distributors?
All AD7884BP 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 AD7884BP meets industry standards.
7.What is the process for return or replacement of AD7884BP?
All AD7884BP units undergo pre-shipment inspection (PSI). If there is an issue with AD7884BP, 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 AD7884BP part is unused and in its original packaging.
Return procedure for AD7884BP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7884BP 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…
