My Inquiry
My Account
Analog Devices Inc. AD7888ARZ-REEL7
- Part No.:
- AD7888ARZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD7888ARZ-REEL7.pdf
- Description:
- IC ADC 12BIT SAR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,032
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7888ARZ-REEL7 from Analog Devices is a micropower, 12-bit, 8-channel successive-approximation ADC operating from a single 2.7 V to 5.25 V supply, delivering 125 kSPS throughput with 71 dB SNR and on-chip 2.5 V reference. It features SPI/QSPI/MICROWIRE/DSP-compatible serial interface, eight single-ended analog inputs (AIN1–AIN8), and flexible power management including autoshutdown mode drawing just 1 µA at 1 kSPS - ideal for battery-powered medical instruments and portable data loggers.
For engineers reviewing the AD7888ARZ-REEL7 datasheet, AD7888ARZ-REEL7 pinout, AD7888ARZ-REEL7 application, or AD7888ARZ-REEL7 equivalent, key selection considerations include its 16-lead TSSOP package, guaranteed no-missed-codes performance (B-grade), channel-to-channel isolation of –80 dB at 25 kHz, 2.5 MHz full-power bandwidth, and support for external reference voltages from 1.2 V to VDD.
Technical Context
The AD7888ARZ-REEL7 implements a charge redistribution SAR architecture with integrated track-and-hold, enabling 500 ns acquisition time and 7.25 µs conversion time at 2 MHz SCLK. Its control logic manages multiplexer addressing (ADD0–ADD2), reference enable/disable (REF bit), and three power modes (normal, autoshutdown, autostandby) via an 8-bit write-only register loaded on DIN during CS-active window.
It supports simultaneous functions: internal 2.5 V reference output (±50 ppm/°C tempco) or external reference input (1.2 V to VDD), straight binary 12-bit output coding (MSB-first, four leading zeros), and digital I/O compatible with 2.7 V–5.25 V logic levels - all within a 5 mm × 4.4 mm TSSOP-16 footprint optimized for space-constrained embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes with LSB = VREF/4096 |
| Throughput Rate | 125 kSPS - enables real-time sampling of signals up to 2.5 MHz full-power bandwidth |
| SNR | 71 dB typ at 10 kHz - ensures high-fidelity digitization in low-noise instrumentation |
| Channel Count | 8 single-ended inputs (AIN1–AIN8) - reduces external multiplexing complexity in multi-sensor systems |
| Supply Range | 2.7 V to 5.25 V - supports direct interfacing with 3 V and 5 V logic domains without level shifters |
| Power Dissipation | 2 mW typical at 5 V - enables >100-hour operation on coin-cell batteries in shutdown-aware firmware |
| Reference | Internal 2.5 V ±50 ppm/°C or external 1.2 V–VDD - allows precision calibration or ratiometric sensing |
Pinout & Package
AD7888ARZ-REEL7 is housed in a 16-lead thin shrink small outline package (TSSOP), 5.0 mm × 4.4 mm × 1.2 mm body size, with exposed pad not electrically connected. Pin 1 is marked by a dot; pin numbering follows standard counter-clockwise orientation from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low frame signal initiating conversion and serial data transfer; must be held low for entire 16-SCLK cycle |
| REF IN/REF OUT | Reference I/O | Provides access to internal 2.5 V reference or accepts external 1.2 V–VDD reference; high-impedance when internal ref disabled |
| VDD | Power Supply | Single 2.7 V–5.25 V supply powering analog and digital sections; requires local 0.1 µF + 10 µF decoupling |
| AGND (Pins 4, 13) | Analog Ground | Common reference for analog inputs, reference, and internal circuitry; must connect to clean analog ground plane |
| AIN1–AIN8 (Pins 5–12) | Analog Inputs | Eight single-ended channels with 0–VREF range; unused channels must tie to AGND to prevent noise coupling |
| DIN | Data Input | Serial control register loading point; accepts ADD0–ADD2, REF, PM1/PM0 bits on rising SCLK edges |
| DOUT | Data Output | 16-bit serial stream (4 leading zeros + 12-bit result, MSB first); driven on falling SCLK edge |
| SCLK | Serial Clock | Master clock for both data transfer and internal conversion timing; max 2 MHz at full VDD range |
Key Features
| Feature | Design Value |
|---|---|
| Autoshutdown power mode | Reduces current to 1 µA at 1 kSPS while retaining register state - eliminates need for reconfiguration between samples |
| On-chip 2.5 V reference | ±50 ppm/°C tempco and 2.45–2.55 V output range - enables stable ratiometric measurements without external reference IC |
| Flexible serial interface | Native SPI/QSPI/MICROWIRE/DSP compatibility - interoperates with common microcontroller peripherals without protocol translation |
| Guaranteed no-missed-codes | B-grade version ensures monotonic 12-bit transfer function across full temperature range - critical for closed-loop control applications |
| High channel isolation | –80 dB crosstalk at 25 kHz - preserves signal integrity when sampling multiple sensors on shared PCB layout |
Applications
| Portable ECG Monitor | Industrial Sensor Hub |
|---|---|
Use Scenario: Simultaneous acquisition of lead-I, lead-II, lead-III, and respiration signals in handheld cardiac diagnostic device powered by CR2032 battery. IC Role / Device Role / Timing Role: 12-bit ADC digitizing eight bio-potential channels at 125 kSPS with internal reference for ratiometric accuracy. Use Value: Micropower shutdown mode extends battery life beyond 120 hours; 71 dB SNR ensures detection of microvolt-level ST-segment deviations. | Use Scenario: Centralized analog front-end for 8-channel temperature, pressure, and humidity sensor array in factory automation PLC module. IC Role / Device Role / Timing Role: Multiplexed ADC converting sensor outputs with channel-to-channel isolation preventing cross-talk in mixed-signal industrial environment. Use Value: Single 16-pin TSSOP replaces discrete mux + ADC solution, reducing BOM count and PCB area by 40% versus SOIC alternatives. |
| Wireless Data Logger | Medical Infusion Pump |
Use Scenario: Battery-operated environmental logger transmitting soil moisture, ambient light, and air quality data via BLE every 5 minutes. IC Role / Device Role / Timing Role: Low-quiescent-current ADC performing burst-mode sampling only during active measurement windows. Use Value: 1 µA shutdown current enables >2-year operation on AA cells; SPI interface simplifies integration with Nordic nRF52 MCU. | Use Scenario: Closed-loop flow rate control system requiring precise analog feedback from load cell and motor current sense. IC Role / Device Role / Timing Role: High-accuracy ADC acquiring safety-critical analog signals with guaranteed monotonicity and no-missed-codes behavior. Use Value: B-grade specification ensures deterministic response under fault conditions; 2.5 MHz bandwidth captures transient motor current spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, 8-channel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit resolution, 200 kSPS, 3 V only, no internal reference | Limited to lower-precision industrial monitoring where 12-bit resolution is unnecessary | Select when cost sensitivity outweighs resolution requirements and external reference is already available |
| MAX11131ETE+ | 12-bit, 500 kSPS, internal 4.096 V reference, 16-TQFN package | Higher speed and fixed higher-voltage reference - better suited for 5 V systems with tight timing budgets | Choose when throughput >125 kSPS is required and board space allows 4 mm × 4 mm QFN |
Compared with ADS7822U and MAX11131ETE+, the AD7888ARZ-REEL7 uniquely balances micropower operation (1 µA shutdown), integrated 2.5 V reference, and 12-bit accuracy in a legacy-compatible TSSOP package - making it optimal for retrofitting into existing 3 V/5 V designs requiring long battery life and minimal layout change.
Availability
AD7888ARZ-REEL7 is available at Aetrix Electronics and suitable for battery-powered medical instruments, portable data loggers, and industrial sensor hubs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for AD7888ARZ-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, serving precision instrumentation, industrial automation, and healthcare markets since 1965.
The AD7888ARZ-REEL7 belongs to Analog Devices' micropower SAR ADC product line, engineered specifically for space- and energy-constrained applications where 12-bit accuracy, multi-channel integration, and ultra-low standby current are mandatory design requirements.
FAQ
What is the maximum sampling frequency supported by the AD7888ARZ-REEL7?
The AD7888ARZ-REEL7 achieves a maximum throughput rate of 125 kSPS when operated with a 2 MHz SCLK across its full 2.7 V to 5.25 V supply range. This corresponds to a total conversion time of 16 SCLK cycles (7.25 µs at 2 MHz), including 1.5-cycle track/hold acquisition. Performance remains stable up to 2.5 MHz full-power bandwidth, enabling accurate digitization of fast transients.
Does the AD7888ARZ-REEL7 require an external reference voltage?
No, the AD7888ARZ-REEL7 includes an on-chip 2.5 V reference with ±50 ppm/°C temperature coefficient, accessible at the REF IN/REF OUT pin. However, it also supports external references from 1.2 V to VDD - in that case, the internal reference must be disabled via the REF bit in the control register to ensure optimal performance and avoid loading conflicts.
How many analog input channels does the AD7888ARZ-REEL7 support, and what is their configuration?
The AD7888ARZ-REEL7 supports eight single-ended analog input channels labeled AIN1 through AIN8. Each channel accepts signals from 0 V to VREF, and channel selection is controlled by the ADD0–ADD2 bits in the 8-bit control register. Unused channels must be tied to AGND to prevent noise pickup and maintain specified channel-to-channel isolation of –80 dB.
What power management modes are available on the AD7888ARZ-REEL7?
The AD7888ARZ-REEL7 offers four power management modes controlled by PM1/PM0 bits: Normal Operation (700 µA typical), Full Shutdown (1 µA at 1 kSPS), Autoshutdown (5 µs wake-up, enters shutdown after each conversion), and Autostandby (retains internal reference enabled, faster wake-up than shutdown). These modes allow dynamic adaptation to varying throughput demands while minimizing average power.
Is the AD7888ARZ-REEL7 pin-compatible with other devices in the AD78xx family?
No, the AD7888ARZ-REEL7 has a unique 16-pin TSSOP pinout optimized for its 8-channel architecture and serial interface. While functionally related to AD7887 (4-channel) and AD7889 (8-channel with different timing), it is not pin-compatible with either. Layout reuse requires verification against the AD7888ARZ-REEL7-specific pin configuration diagram showing CS, REF IN/REF OUT, AIN1–AIN8, DIN, DOUT, SCLK, VDD, and dual AGND pins.
AD7888ARZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-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:
- 8
- 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 ~ 105°C
- Supplier Device Package:
- 16-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7888ARZ-REEL7 FAQ
1.How can I place an order for AD7888ARZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7888ARZ-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 AD7888ARZ-REEL7 reliable?
The price and inventory of AD7888ARZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7888ARZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7888ARZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7888ARZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7888ARZ-REEL7?
AD7888ARZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7888ARZ-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 AD7888ARZ-REEL7?
For technical support, including AD7888ARZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7888ARZ-REEL7 requirements.
6.How does Aetrix verify that AD7888ARZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7888ARZ-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 AD7888ARZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7888ARZ-REEL7?
All AD7888ARZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7888ARZ-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 AD7888ARZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7888ARZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7888ARZ-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…
