My Inquiry
My Account
Analog Devices Inc. AD7887ARZ-REEL7
- Part No.:
- AD7887ARZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD7887ARZ-REEL7.pdf
- Description:
- IC ADC 12BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:910
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7887ARZ-REEL7 from Analog Devices is a micropower, 12-bit successive approximation register (SAR) analog-to-digital converter (ADC) operating from a single 2.7 V to 5.25 V supply. It delivers 125 kSPS throughput, features dual/single-channel configurable operation via an 8-bit control register, and supports SPI/QSPI/MICROWIRE/DSP-compatible serial interface. It is used in battery-powered medical instruments and portable communications equipment where low power and compact size are critical.
For engineers reviewing the AD7887ARZ-REEL7 datasheet, AD7887ARZ-REEL7 pinout, AD7887ARZ-REEL7 application, or AD7887ARZ-REEL7 equivalent, key selection criteria include its 8-lead MSOP package, 1 μA shutdown current, 2.5 MHz full-power bandwidth, flexible reference configuration (internal 2.5 V or external 1.2 V–VDD), and channel-to-channel isolation of −80 dB at 25 kHz.
Technical Context
The AD7887ARZ-REEL7 implements a charge-redistribution SAR architecture with integrated track-and-hold, acquiring signals in 500 ns. Its control logic enables mode selection between single-channel (AIN0 only, AIN1/VREF as VREF) and dual-channel (AIN0 and AIN1, VDD as reference) operation via the 8-bit write-only register.
It uses straight binary output coding with LSB = VREF/4096, supports four power management modes (including automatic shutdown post-conversion), and features CMOS construction enabling 2 mW typical normal-mode dissipation and 3 μW in shutdown-critical for energy-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete digital levels for precise signal digitization |
| Throughput Rate | 125 kSPS - supports real-time sampling of baseband signals up to 2.5 MHz (Nyquist) |
| Supply Voltage | 2.7 V to 5.25 V - operates across both 3 V and 5 V system rails without level-shifting |
| Shutdown Current | 1 μA max - enables ultra-low quiescent power during idle periods in portable devices |
| SNR | 71 dB typ at 10 kHz - ensures high-fidelity digitization with minimal noise/distortion contribution |
| Input Range (Single-Channel) | 0 V to VREF - supports programmable full-scale range via internal 2.5 V or external 1.2–VDD reference |
| Channel Isolation | −80 dB at 25 kHz - prevents crosstalk between AIN0 and AIN1 in dual-channel acquisition |
Pinout & Package
The AD7887ARZ-REEL7 is housed in an 8-lead MSOP package (3.0 mm × 3.0 mm, 0.65 mm pitch), optimized for space-constrained PCB layouts in portable instrumentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select / Shutdown Control | Active-low input initiating conversion and framing serial data; high state forces shutdown in default mode |
| VDD | Power Supply Input | Single 2.7–5.25 V rail powering core logic, ADC, and (in dual-channel mode) serving as reference source |
| GND | Analog Ground Reference | Common return for analog circuitry; requires tight coupling to AGND plane to minimize noise coupling |
| AIN1/VREF | Configurable Terminal | In single-channel mode: 2.5 V reference output/input; in dual-channel mode: second analog input (0–VDD range) |
| AIN0 | Analog Input 0 | Primary input channel; range = 0–VREF (single) or 0–VDD (dual); 20 pF input capacitance |
| DIN | Serial Data Input | Accepts 8-bit control register writes on SCLK rising edge; tied to GND for read-only single-channel operation |
| DOUT | Serial Data Output | Outputs 16-bit frame (4 leading zeros + 12-bit result, MSB first) on SCLK falling edge |
| SCLK | Serial Clock Input | Provides clock for both data transfer and internal conversion timing; supports up to 2 MHz operation |
Key Features
| Feature | Design Value |
|---|---|
| Flexible Channel Configuration | Software-selectable single- or dual-channel mode via 8-bit control register, eliminating hardware rework |
| Ultra-Low Power Management | Four programmable power modes-including auto-shutdown after conversion-reduce average system power |
| Integrated Reference Options | Internal 2.5 V ±50 ppm/°C reference or external 1.2–VDD reference support, simplifying BOM and layout |
| SPI-Compatible Serial Interface | Native compatibility with microcontroller SPI peripherals eliminates need for protocol translation logic |
| High-Speed Track-and-Hold | 500 ns acquisition time enables accurate sampling of fast transient signals without external buffering |
Applications
| Portable Medical Sensors | Battery-Powered PDAs |
|---|---|
Use Scenario: Continuous acquisition of ECG or pulse oximetry signals in handheld diagnostic devices. IC Role / Device Role / Timing Role: Primary ADC digitizing analog front-end outputs with 12-bit resolution and 125 kSPS rate. Use Value: 1 μA shutdown current extends battery life; 2.5 MHz full-power bandwidth captures physiological harmonics accurately. | Use Scenario: Monitoring battery voltage, temperature, and sensor inputs in personal digital assistants. IC Role / Device Role / Timing Role: Dual-channel ADC simultaneously sampling battery monitor and ambient light sensor. Use Value: −80 dB channel isolation prevents cross-talk; 8-lead MSOP saves board area in slim form factors. |
| Industrial Data Loggers | Wireless Modem Front Ends |
Use Scenario: Periodic logging of temperature, pressure, and humidity in remote field sensors. IC Role / Device Role / Timing Role: Low-power ADC operating in standby mode between scheduled acquisitions. Use Value: Mode 4 standby (210 μA typ) enables rapid wake-up while minimizing sleep current; internal reference eliminates external component. | Use Scenario: Digitizing IF or baseband signals in high-speed wireless modems. IC Role / Device Role / Timing Role: High-fidelity ADC supporting >2 MHz signal bandwidth for QAM/OFDM demodulation. Use Value: 71 dB SNR at 10 kHz ensures clean signal reconstruction; straight binary output simplifies DSP interface. |
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 |
|---|---|---|---|
| ADS7822U | 8-bit resolution, 200 kSPS, 2.7–5.25 V, 8-pin SOIC only | Limited to lower-resolution applications; lacks dual-channel flexibility and internal reference | Choose when cost sensitivity outweighs resolution and configurability requirements |
| MAX11131ETE+ | 12-bit, 250 kSPS, 2.7–3.6 V only, internal reference disabled by default | Higher speed but narrower supply range; requires external reference for 5 V systems | Prefer for 3 V-only designs needing faster throughput; verify reference architecture compatibility |
Compared with ADS7822U and MAX11131ETE+, the AD7887ARZ-REEL7 uniquely combines 12-bit resolution, dual/single-channel software configurability, internal 2.5 V reference, and 1 μA shutdown in an 8-lead MSOP-making it optimal for space- and power-constrained mixed-voltage embedded systems.
Availability
AD7887ARZ-REEL7 is available at Aetrix Electronics and suitable for battery-powered medical instruments, portable communications equipment, and industrial data loggers requiring stable component supply and long-term lifecycle support.
Supply support for AD7887ARZ-REEL7 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 Norwood, MA.
The AD7887 product line delivers micropower, high-speed SAR ADCs for portable and energy-sensitive applications, emphasizing minimal footprint, flexible reference architecture, and robust serial interfacing.
FAQ
What is the maximum sampling frequency supported by the AD7887ARZ-REEL7?
The AD7887ARZ-REEL7 supports a maximum throughput rate of 125 kSPS when operated with a 2 MHz SCLK. This corresponds to a minimum conversion + acquisition time of 16 SCLK cycles (7.25 μs total). The device maintains specified DC accuracy and dynamic performance (e.g., 71 dB SNR) at this rate, making it suitable for real-time signal capture in portable instrumentation.
Does the AD7887ARZ-REEL7 require an external reference voltage?
No-the AD7887ARZ-REEL7 integrates a precision 2.5 V reference (±50 ppm/°C) accessible via the AIN1/VREF pin in single-channel mode. An external reference (1.2 V to VDD) may be applied to that same pin to override the internal reference. In dual-channel mode, the device uses VDD as the reference, eliminating need for any external reference component.
How does the AD7887ARZ-REEL7 handle dual-channel versus single-channel operation?
The AD7887ARZ-REEL7 configures channel count via Bit 4 (SIN/DUAL) in its 8-bit control register: '0' selects single-channel (AIN0 only, AIN1/VREF = VREF); '1' enables dual-channel (AIN0 and AIN1, VDD = reference). Channel selection in dual mode is controlled by Bit 3 (CH), allowing sequential or alternating sampling without reconfiguration overhead.
What power management modes are available on the AD7887ARZ-REEL7?
The AD7887ARZ-REEL7 offers four power management modes defined by PM1/PM0 bits: Mode 1 (CS-gated shutdown), Mode 2 (always-on), Mode 3 (auto-shutdown post-conversion), and Mode 4 (standby with reference active). Mode 3 reduces average current to 12 μA at 1 kSPS, while Mode 4 enables sub-1 ms wake-up from 210 μA standby-ideal for duty-cycled sensing.
Is the AD7887ARZ-REEL7 compatible with standard microcontroller SPI interfaces?
Yes-the AD7887ARZ-REEL7 features an SPI/QSPI/MICROWIRE/DSP-compatible serial interface. It uses CS (active-low), SCLK (input), DIN (data-in on rising edge), and DOUT (data-out on falling edge) with MSB-first 16-bit frames (4 leading zeros + 12-bit result). No mode configuration or polarity inversion is required for direct connection to common MCU SPI peripherals.
AD7887ARZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 125k
- Number of Inputs:
- 1, 2
- Input Type:
- Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 8-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7887ARZ-REEL7 FAQ
1.How can I place an order for AD7887ARZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7887ARZ-REEL7 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 AD7887ARZ-REEL7 reliable?
The price and inventory of AD7887ARZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7887ARZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7887ARZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7887ARZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7887ARZ-REEL7?
AD7887ARZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7887ARZ-REEL7 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 AD7887ARZ-REEL7?
For technical support, including AD7887ARZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7887ARZ-REEL7 requirements.
6.How does Aetrix verify that AD7887ARZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7887ARZ-REEL7 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 AD7887ARZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7887ARZ-REEL7?
All AD7887ARZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7887ARZ-REEL7, 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 AD7887ARZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7887ARZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7887ARZ-REEL7 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…
