My Inquiry
My Account
Analog Devices Inc. AD7887ARMZ-REEL
- Part No.:
- AD7887ARMZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7887ARMZ-REEL.pdf
- Description:
- IC ADC 12BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,645
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7887ARMZ-REEL from Analog Devices is a micropower, 12-bit successive approximation register (SAR) ADC supporting dual- or single-channel operation in an 8-lead MSOP package. It delivers 125 kSPS throughput at 2.7 V to 5.25 V supply, features 2.5 MHz full-power bandwidth, 71 dB SNR at 10 kHz input, and configurable reference sourcing (internal 2.5 V or external 1.2 V–VDD). It is used in battery-powered medical instruments and portable instrumentation where low quiescent current and flexible analog input scaling are critical.
For engineers reviewing the AD7887ARMZ-REEL datasheet, AD7887ARMZ-REEL pinout, AD7887ARMZ-REEL application, or AD7887ARMZ-REEL equivalent, key selection criteria include its dual-mode analog input configuration (0–VREF or 0–VDD), SPI/QSPI/MICROWIRE-compatible serial interface, 1 μA shutdown current, 12-bit resolution with ±1 LSB DNL (B grade), and automotive-qualified MSOP packaging.
Technical Context
The AD7887ARMZ-REEL employs a charge-redistribution DAC architecture with integrated track-and-hold, acquiring signals in 500 ns and completing conversion in 7.25 μs (at 2 MHz SCLK). Its control register enables dynamic mode switching between single-channel (AIN0 only, AIN1/VREF as reference) and dual-channel (AIN0 + AIN1, VDD as reference) operation.
Power management is implemented via four programmable modes: full-power (850 μA typ), standby (450 μA typ), automatic shutdown post-conversion (12 μA typ at 1 kSPS), and CS-controlled shutdown (1 μA max). Reference flexibility includes internal 2.5 V ±50 ppm/°C output or external overdrive (1.2 V to VDD), directly determining input range scaling and linearity performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete digital codes for precise analog signal digitization. |
| Throughput Rate | 125 kSPS - supports real-time sampling of signals up to 2.5 MHz full-power bandwidth. |
| Supply Voltage | 2.7 V to 5.25 V - operates across single Li-ion (3.0 V nominal) and 5 V legacy systems without level-shifting. |
| SNR @ 10 kHz | 71 dB typ - enables accurate measurement of low-amplitude signals in noisy portable environments. |
| Shutdown Current | 1 μA max - extends battery life in intermittent-sampling applications like wearable sensors. |
| Reference Options | Internal 2.5 V ±50 ppm/°C or external 1.2 V–VDD - allows input range tuning from 0–2.5 V (precision) or 0–VDD (system-rail referenced). |
| Differential Nonlinearity | ±1 LSB max (B grade) - guarantees monotonicity and no missing codes up to 11 bits for reliable control-loop feedback. |
Pinout & Package
AD7887ARMZ-REEL is housed in an 8-lead, 0.15-inch-wide MSOP package (3.0 mm × 3.0 mm × 0.85 mm body, 0.65 mm pitch), qualified for automotive temperature range (−40°C to +125°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select / Shutdown Control | Active-low input that initiates conversion and frames serial data; high state forces shutdown mode in Mode 1. |
| VDD | Power Supply Input | Single 2.7 V–5.25 V rail powering analog/digital circuitry; serves as reference source in dual-channel mode. |
| GND | Analog Ground Reference | Common return for all internal circuitry; must be tied to system AGND near this pin 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-channel) or 0–VDD (dual-channel), with ±5 μA leakage. |
| DIN | Serial Data Input | Writes 8-bit control register on SCLK rising edge; can be 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 | Drives both data transfer and internal ADC conversion timing; supports up to 2 MHz clock rate. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible Channel Configuration | Software-selectable single- or dual-channel mode via 8-bit control register, enabling one ADC to serve multiple sensor types. |
| Ultra-Low Power Shutdown | 1 μA maximum shutdown current preserves battery capacity during idle periods in portable medical devices. |
| SPI-Compatible Serial Interface | Native support for SPI/QSPI/MICROWIRE/DSP protocols eliminates need for protocol translation logic or firmware overhead. |
| Internal 2.5 V Reference | Stable ±50 ppm/°C output reduces BOM count and layout complexity versus external reference ICs in precision measurement designs. |
| Automotive-Qualified Packaging | MSOP package qualified per AEC-Q100 Grade 1 (−40°C to +125°C), enabling use in engine control and ADAS sensor interfaces. |
Applications
| Portable Medical Instrumentation | Battery-Powered PDA Sensors |
|---|---|
|
Use Scenario: Continuous glucose monitor digitizing electrochemical sensor output with minimal power draw between readings. IC Role / Device Role / Timing Role: 12-bit SAR ADC performing single-channel acquisition at 1–10 kSPS, using internal 2.5 V reference for stable 0–2.5 V input scaling. Use Value: 1 μA shutdown current extends coin-cell lifetime beyond 12 months; 71 dB SNR ensures accurate detection of sub-mV analyte signals. |
Use Scenario: Touchscreen controller sampling resistive overlay voltage in handheld PDAs powered by single Li-ion cell. IC Role / Device Role / Timing Role: Dual-channel ADC converting X/Y coordinate inputs sequentially at 125 kSPS, referencing to VDD for rail-to-rail dynamic range. Use Value: 0–VDD input range eliminates external level shifters; 125 kSPS throughput enables responsive 100 Hz touch refresh rates. |
| Industrial Field Transmitter | Automotive Cabin Environment Monitor |
|
Use Scenario: 4–20 mA loop-powered temperature transmitter digitizing RTD bridge output in hazardous locations. IC Role / Device Role / Timing Role: Single-channel ADC operating from 3.3 V supply with external 2.5 V reference, configured for high-accuracy ratiometric measurements. Use Value: ±1 LSB DNL (B grade) and 71 dB SNR ensure <0.1% total unadjusted error over industrial temperature range. |
Use Scenario: In-cabin air quality module measuring CO₂, humidity, and VOC levels using electrochemical and capacitive sensors. IC Role / Device Role / Timing Role: Dual-channel ADC sampling multiple sensors in sequence, leveraging automotive-qualified MSOP package and −40°C to +125°C operation. Use Value: AEC-Q100 qualification ensures reliability in thermal cycling environments; 2.5 MHz full-power bandwidth supports fast transient gas concentration detection. |
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 supply, SPI interface, SO-8 package | Limited to lower-precision applications (e.g., basic panel metering); lacks dual-channel mode and internal reference | Select when 8-bit resolution suffices and higher throughput is prioritized over precision or configurability. |
| MAX11100ETA+ | 12-bit, 250 kSPS, 2.7–3.6 V only, internal 2.048 V reference, 8-pin TDFN | Not suitable for 5 V systems or dual-channel operation; narrower supply range limits compatibility with mixed-rail designs | Choose for ultra-low-voltage (3 V) battery systems where 250 kSPS and compact TDFN are critical, but verify VDD compatibility. |
Compared with ADS7822U and MAX11100ETA+, AD7887ARMZ-REEL uniquely combines 12-bit precision, dual/single-channel flexibility, internal 2.5 V reference, 5 V tolerance, and automotive-grade MSOP-making it optimal for portable instrumentation requiring accuracy, configurability, and extended temperature reliability.
Availability
AD7887ARMZ-REEL is available at Aetrix Electronics and suitable for battery-powered medical instruments, portable PDAs, industrial field transmitters, and automotive cabin monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7887ARMZ-REEL 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, with design and manufacturing operations worldwide.
The AD7887 belongs to Analog Devices' precision SAR ADC product line, engineered for low-power, high-accuracy data acquisition in space- and energy-constrained portable and automotive systems.
FAQ
What is the maximum sampling rate supported by the AD7887ARMZ-REEL?
The AD7887ARMZ-REEL achieves a maximum throughput rate of 125 kSPS when operated with a 2 MHz serial clock. This corresponds to a total conversion time plus acquisition time of 16 SCLK cycles (7.25 μs conversion + 500 ns acquisition), enabling real-time digitization of signals up to 2.5 MHz full-power bandwidth.
Does the AD7887ARMZ-REEL require an external reference voltage?
No-the AD7887ARMZ-REEL integrates a precision 2.5 V reference with ±50 ppm/°C temperature coefficient, accessible at the AIN1/VREF pin. It can operate with this internal reference in single-channel mode, or accept an external reference from 1.2 V to VDD when higher accuracy or custom scaling is needed.
How does the AD7887ARMZ-REEL handle dual-channel versus single-channel operation?
The AD7887ARMZ-REEL uses its 8-bit control register to configure operation: setting bit 4 (SIN/DUAL) to 0 selects single-channel mode (AIN0 only, AIN1/VREF as reference); setting it to 1 enables dual-channel mode (AIN0 and AIN1, with VDD as reference). Channel selection in dual mode is controlled by bit 3 (CH).
What power management modes are available on the AD7887ARMZ-REEL?
The AD7887ARMZ-REEL offers four programmable power modes via PM1/PM0 bits: Mode 1 (CS-controlled shutdown), Mode 2 (always-on), Mode 3 (auto-shutdown after conversion), and Mode 4 (standby with reference active). Shutdown current is 1 μA max, and standby draws 450 μA typ at 50 kSPS.
Is the AD7887ARMZ-REEL compatible with standard microcontroller SPI peripherals?
Yes-the AD7887ARMZ-REEL's serial interface is fully compatible with SPI, QSPI, MICROWIRE, and DSP protocols. It uses CS-active-low framing, SCLK-driven data transfer (DIN on rising edge, DOUT on falling edge), and outputs a 16-bit word (4 leading zeros + 12-bit result, MSB first), requiring no custom driver code on common MCUs.
AD7887ARMZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7887ARMZ-REEL FAQ
1.How can I place an order for AD7887ARMZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7887ARMZ-REEL 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 AD7887ARMZ-REEL reliable?
The price and inventory of AD7887ARMZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7887ARMZ-REEL is usually 5 days.
3.What payment methods are accepted for AD7887ARMZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7887ARMZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7887ARMZ-REEL?
AD7887ARMZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7887ARMZ-REEL 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 AD7887ARMZ-REEL?
For technical support, including AD7887ARMZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7887ARMZ-REEL requirements.
6.How does Aetrix verify that AD7887ARMZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD7887ARMZ-REEL 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 AD7887ARMZ-REEL meets industry standards.
7.What is the process for return or replacement of AD7887ARMZ-REEL?
All AD7887ARMZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7887ARMZ-REEL, 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 AD7887ARMZ-REEL part is unused and in its original packaging.
Return procedure for AD7887ARMZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7887ARMZ-REEL 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…
