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Analog Devices Inc. AD7788BRMZ-REEL
- Part No.:
- AD7788BRMZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7788BRMZ-REEL.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,152
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Product details
Overview
AD7788BRMZ-REEL from Analog Devices is a low-power, 16-bit sigma-delta analog-to-digital converter (ADC) with fully differential input, 16.6 Hz output update rate, 1.5 µV rms noise, and integrated VDD monitor channel. It operates from a single 2.5 V to 5.25 V supply, consumes ≤75 µA in normal mode, and targets precision sensor measurement in battery-powered industrial transmitters.
For engineers reviewing the AD7788BRMZ-REEL datasheet, AD7788BRMZ-REEL pinout, AD7788BRMZ-REEL application, or AD7788BRMZ-REEL equivalent, key selection criteria include its simultaneous 50/60 Hz rejection, 10-lead MSOP package, SPI-compatible 3-wire interface, and guaranteed 16-bit no-missing-codes performance over −40°C to +105°C (B grade).
Technical Context
The AD7788BRMZ-REEL implements a first-order sigma-delta modulator followed by a digital sinc³ filter, delivering 16-bit p-p resolution at 16.6 Hz with inherent 50 Hz and 60 Hz line frequency rejection. Its internal clock oscillator eliminates external timing components, and the unbuffered differential input supports ±REFIN ranges with programmable unipolar/bipolar coding.
It features a dedicated VDD monitor channel (CH1=CH0=11), enabling on-chip power supply measurement via internal 5:1 voltage divider and 1.17 V reference. The serial interface uses Schmitt-triggered SCLK for noise immunity and supports continuous-read mode via CREAD bit in the communications register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit p-p (guaranteed no missing codes); enables precise digitization of low-level sensor outputs without code gaps |
| Output Update Rate | 16.6 Hz nominal; provides fixed conversion interval optimized for simultaneous 50 Hz and 60 Hz power-line rejection |
| RMS Noise | 1.5 µV typical; supports sub-µV-level signal resolution in high-precision weigh scales and pressure sensors |
| Supply Current | 75 µA maximum (normal mode); allows multi-year operation from coin-cell batteries in portable instrumentation |
| Integral Nonlinearity | ±15 ppm of FSR max (B grade); ensures <0.002% full-scale error across temperature for calibrated sensor systems |
| Operating Temperature | −40°C to +105°C (B grade); qualified for deployment in harsh industrial environments including smart transmitter housings |
| Differential Input Range | ±REFIN (e.g., ±2.5 V with 2.5 V reference); matches common bridge sensor excitation and ratiometric measurement topologies |
Pinout & Package
AD7788BRMZ-REEL is housed in a 10-lead MSOP (3 mm × 3 mm, 0.5 mm pitch) with exposed pad for thermal enhancement. Pin 1 is marked with dot; pin numbering follows standard MSOP top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCLK | Serial clock input | Schmitt-triggered input enables robust communication in noisy industrial settings; supports opto-isolation and noncontinuous clocking |
| CS | Chip select (active low) | Enables 3-wire operation when hardwired low; serves as frame sync in multi-device SPI buses |
| AIN(+), AIN(−) | Differential analog input terminals | Unbuffered inputs accept ±REFIN range; require external filtering per layout guidelines to maintain CMRR >100 dB at 50/60 Hz |
| REFIN(+), REFIN(−) | Differential reference input | Accepts 0.1 V to VDD reference; nominal 2.5 V reference enables ratiometric accuracy with bridge sensors |
| GND | Analog ground reference | Single ground pin requires star-point connection to minimize noise coupling into sensitive analog front end |
| VDD | Power supply | 2.5 V to 5.25 V single supply powers both analog and digital sections; internal regulator not used |
| DOUT/RDY | Combined data output / ready indicator | Falling edge signals valid conversion data; functions as interrupt to host MCU; three-states when CS high |
| DIN | Serial data input | Loads control words into communications, mode, and status registers; supports register addressing via RS1/RS0 bits |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous 50 Hz and 60 Hz rejection | 65 dB minimum normal-mode rejection at both frequencies-eliminates need for external notch filters in global instrumentation |
| Integrated VDD monitor channel | Measures supply voltage via internal 5:1 divider and 1.17 V reference-enables real-time power health monitoring without external components |
| Internal clock oscillator | Removes requirement for external crystal or clock generator-reduces BOM count and PCB area in space-constrained modules |
| Low power-down current | 1 µA maximum-supports ultra-low-quiescent wake-up architectures in battery-operated wireless sensors |
| Offset binary output coding | Provides intuitive zero-based scaling for unipolar sensor outputs (e.g., 0–2.5 V pressure transducers) without software offset correction |
Applications
| Smart Transmitters | Battery-Powered Sensors |
|---|---|
|
Use Scenario: 4–20 mA loop-powered field transmitter measuring strain gauge output in oil & gas wellhead equipment. IC Role / Device Role / Timing Role: Primary ADC digitizing mV-level bridge output; provides factory-calibrated 16-bit data synchronized to internal 16.6 Hz clock. Use Value: Simultaneous 50/60 Hz rejection ensures stable readings in electrically noisy substations without external filtering. |
Use Scenario: Portable handheld temperature logger using thermistor or RTD, operating from CR2032 coin cell for >2 years. IC Role / Device Role / Timing Role: Low-power ADC acquiring temperature samples every 10 seconds; enters 1 µA power-down between conversions. Use Value: 75 µA normal-mode current and integrated VDD monitor enable accurate battery-life estimation and low-battery alerts. |
| Weigh Scales | Industrial Pressure Monitoring |
|
Use Scenario: Platform scale for warehouse logistics, requiring 10,000-count resolution with <1 µV noise floor. IC Role / Device Role / Timing Role: High-resolution sigma-delta ADC interfacing directly to load cell; outputs 16-bit p-p data with no missing codes. Use Value: 1.5 µV rms noise and ±15 ppm INL support sub-gram resolution on 100 kg platforms without calibration drift compensation. |
Use Scenario: DIN-rail mounted pressure transmitter for HVAC chillers, operating continuously at 60°C ambient. IC Role / Device Role / Timing Role: Precision ADC converting piezoresistive sensor output; rated for −40°C to +105°C (B grade) operation. Use Value: Guaranteed 16-bit performance across full industrial temperature range eliminates need for on-board temperature compensation firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sigma-delta ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7790BRMZ-REEL | Same 16-bit resolution and 10-lead MSOP package; lower 30 µA typical supply current but no VDD monitor channel | Lacks integrated supply monitoring-requires external resistor divider and ADC channel for power supervision | Select when lowest possible active current is critical and VDD monitoring is handled externally |
| ADS1115IDGSR | 16-bit, 860 SPS max, I²C interface, 10-bit internal reference; higher speed but no built-in 50/60 Hz rejection | Requires external digital filtering or host MCU post-processing to achieve line-frequency rejection | Select when system already uses I²C bus and higher throughput (>16.6 Hz) is needed, accepting added software complexity |
Compared with AD7788BRMZ-REEL, AD7790BRMZ-REEL offers lower quiescent current but sacrifices on-chip VDD monitoring, while ADS1115IDGSR trades integrated line-rejection and simplicity for higher speed and I²C compatibility-making AD7788BRMZ-REEL optimal for cost-sensitive, noise-immune, self-contained analog front ends.
Availability
AD7788BRMZ-REEL is available at Aetrix Electronics and suitable for smart transmitters, battery-powered sensors, and industrial pressure monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7788BRMZ-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.
The AD7788 is part of Analog Devices' precision sigma-delta ADC family designed specifically for low-frequency, low-power sensor signal conditioning in industrial process control and instrumentation.
FAQ
What is the guaranteed resolution and no-missing-codes specification for AD7788BRMZ-REEL?
AD7788BRMZ-REEL guarantees 16-bit no-missing-codes performance across its full operating temperature range (−40°C to +105°C, B grade). Its 16-bit p-p resolution is specified in Table 2 of the Rev. C datasheet, with integral nonlinearity limited to ±15 ppm of FSR maximum-ensuring monotonicity and consistent LSB step size for precision sensor digitization without interpolation.
Does AD7788BRMZ-REEL support simultaneous 50 Hz and 60 Hz line frequency rejection, and how is it implemented?
Yes, AD7788BRMZ-REEL provides simultaneous 50 Hz and 60 Hz rejection through its fixed 16.6 Hz output update rate and sinc³ digital filter architecture. This design yields ≥65 dB normal-mode rejection at both frequencies without external components, as verified in Table 1 and Figure 6 of the datasheet-making AD7788BRMZ-REEL ideal for global instrumentation deployed in regions with either power standard.
What is the function of the VDD monitor channel in AD7788BRMZ-REEL, and how is it accessed?
The VDD monitor channel in AD7788BRMZ-REEL measures the supply voltage using an internal 5:1 resistor divider and the on-chip 1.17 V reference. It is selected by setting CH1=CH0=11 in the communications register (Table 9), after which the converted result appears in the 16-bit data register. This feature enables real-time power health checks without external components-critical for battery-operated AD7788BRMZ-REEL deployments.
What package type and pin count does AD7788BRMZ-REEL use, and is it RoHS compliant?
AD7788BRMZ-REEL uses a 10-lead MSOP package (3 mm × 3 mm, 0.5 mm pitch) with exposed pad, as shown in Figure 5 and confirmed in the Ordering Guide (Page 19). It is RoHS compliant and lead-free, meeting JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) requirements-suitable for standard reflow assembly processes without special handling.
Can AD7788BRMZ-REEL operate with a 3 V supply, and what is its typical power dissipation at that voltage?
Yes, AD7788BRMZ-REEL operates from 2.5 V to 5.25 V, including 3 V nominal supplies. At VDD = 3 V, its typical supply current is 65 µA (Table 3), resulting in ~195 µW typical power dissipation-verified in the General Description (Page 1) and supporting multi-year operation in coin-cell–powered AD7788BRMZ-REEL applications such as portable instrumentation.
AD7788BRMZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 16.6
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI, DSP
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.5V ~ 5.25V
- Voltage - Supply, Digital:
- 2.5V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7788BRMZ-REEL FAQ
1.How can I place an order for AD7788BRMZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7788BRMZ-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 AD7788BRMZ-REEL reliable?
The price and inventory of AD7788BRMZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7788BRMZ-REEL is usually 5 days.
3.What payment methods are accepted for AD7788BRMZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7788BRMZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7788BRMZ-REEL?
AD7788BRMZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7788BRMZ-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 AD7788BRMZ-REEL?
For technical support, including AD7788BRMZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7788BRMZ-REEL requirements.
6.How does Aetrix verify that AD7788BRMZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD7788BRMZ-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 AD7788BRMZ-REEL meets industry standards.
7.What is the process for return or replacement of AD7788BRMZ-REEL?
All AD7788BRMZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7788BRMZ-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 AD7788BRMZ-REEL part is unused and in its original packaging.
Return procedure for AD7788BRMZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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