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Texas Instruments ADS7816EB/2K5G4
- Part No.:
- ADS7816EB/2K5G4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADS7816EB/2K5G4.pdf
- Description:
- IC ADC 12BIT SAR 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,460
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Product details
Overview
ADS7816EB/2K5G4 from Burr-Brown (now Texas Instruments) is a 12-bit, 200kHz sampling successive approximation register (SAR) analog-to-digital converter with differential input, synchronous serial interface, and programmable reference range (100mV–5V). It delivers 1.9mW power at full rate and enters 3µA shutdown when CS is high, making it suitable for remote data acquisition systems requiring low-power, isolated signal digitization.
For engineers reviewing the ADS7816EB/2K5G4 datasheet, ADS7816EB/2K5G4 pinout, ADS7816EB/2K5G4 application, or ADS7816EB/2K5G4 equivalent, key selection considerations include its 8-lead MSOP package, ±1 LSB integral linearity (grade EB), 25pF input capacitance, CMOS-compatible digital interface timing, and differential input architecture optimized for remote ground sensing in battery-powered or isolated measurement nodes.
Technical Context
The ADS7816EB/2K5G4 implements a capacitive redistribution SAR architecture fabricated in 0.6µm CMOS, enabling single-supply +5V operation with no internal reference. Conversion is initiated by falling edge of CS/SHDN, followed by 1.5 clock cycles of sampling and 12 clock cycles of conversion, with serial output (MSB-first) enabled on the second falling edge of DCLOCK.
Its differential input accepts ±200mV common-mode swing on –In and supports full-scale spans up to VREF; reference current scales with sample rate (e.g., 38–100µA at code 710h, 200kHz) and exhibits <0.15 LSB gain drift over –40°C to +85°C. Power-down mode fully disables analog and digital sections only when CS = VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes with straight binary format. |
| Sampling Rate | 200 kHz - enables real-time capture of signals up to 100 kHz (Nyquist-limited). |
| INL / DNL | ±2 / ±1 LSB (max) - grade EB ensures monotonicity and ≤0.024% full-scale linearity error at VREF = 5V. |
| Power Consumption | 1.9 mW at 200 kHz - includes analog and digital circuitry; drops to 150 µW at 12.5 kHz. |
| Reference Range | 0.1 V to 5 V - sets LSB size from 24 µV (100 mV) to 1.22 mV (5 V); requires external stable source. |
| Input Configuration | Differential (+In, –In) - –In limited to ±200 mV; enables remote ground sensing but not full common-mode rejection. |
| Interface | Synchronous 3-wire serial (CS/SHDN, DCLOCK, DOUT) - MSB-first, no pipeline delay, compatible with SPI master logic. |
Pinout & Package
ADS7816EB/2K5G4 is housed in an 8-lead MSOP package (Package Drawing 337), measuring 3.0 mm × 3.0 mm × 1.0 mm, with exposed thermal pad (not electrically connected). Pin spacing is 0.65 mm; recommended solder profile complies with JEDEC J-STD-020C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VREF | Reference voltage input | High-impedance node (5 GΩ min); supplies full-scale scaling; current draw varies with code and sample rate (e.g., 38–100 µA). |
| 2 +In | Non-inverting analog input | Differential input terminal; absolute voltage must stay within –0.2 V to VCC + 0.2 V; 25 pF input capacitance. |
| 3 –In | Inverting analog input | Remote ground sense point; limited to ±200 mV swing; not resampled during conversion-captures initial differential voltage. |
| 4 GND | Analog ground reference | Must connect to clean analog ground plane; isolation from digital ground prevents noise coupling into conversion result. |
| 5 CS/SHDN | Chip select / shutdown control | Active-low conversion trigger; HIGH forces full shutdown (3 µA max); timing-critical for serial data enable (tSUCS = 30 ns min). |
| 6 DOUT | Serial data output | CMOS-level output (VOH ≥ 3.5 V, VOL ≤ 0.4 V); data valid on falling DCLOCK edge; tri-states when CS rises. |
| 7 DCLOCK | Data clock input | Controls conversion speed and serial timing; supports 10 kHz–3.2 MHz; min pulse width 150 ns; duty cycle flexible. |
| 8 +VCC | Positive supply | +4.5 V to +5.25 V; powers analog and digital sections; requires local 0.1 µF ceramic bypass adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Micro-power operation | 1.9 mW at 200 kHz sampling - enables >1-year battery life in 10-sampling/sec portable sensors. |
| Automatic power-down | 3 µA shutdown current when CS = VCC - eliminates need for external power gating in intermittent acquisition. |
| Differential input architecture | True hold-on-capture of +In – (–In) voltage - rejects localized ground bounce without requiring matched trace lengths. |
| Programmable reference range | 100 mV to 5 V - allows direct digitization of low-level sensor outputs (e.g., thermocouples) without gain amplification. |
| Small-footprint MSOP package | 8-lead, 3 mm × 3 mm body - reduces PCB area by 60% vs SOIC-8; compatible with automated optical inspection. |
Applications
| Portable Battery-Powered Sensors | Isolated Industrial Monitoring |
|---|---|
Use Scenario: Digitizing thermocouple or strain gauge outputs in handheld test equipment with 10-year battery life target. IC Role / Device Role / Timing Role: Primary ADC capturing slow-varying analog signals; uses 12.5 kHz sampling and automatic shutdown between readings. Use Value: 150 µW quiescent power at low rate extends runtime; 100 mV reference support eliminates front-end op-amp stage. |
Use Scenario: Remote temperature/voltage monitoring across galvanically isolated barriers in motor control cabinets. IC Role / Device Role / Timing Role: Local ADC interfacing to isolated SPI bus; differential inputs referenced to remote sensor ground. Use Value: –In pin tied to sensor-side ground rejects common-mode noise up to 200 mV; MSOP footprint eases layout in space-constrained enclosures. |
| Multi-Channel Data Acquisition | Low-Power Environmental Sensing |
Use Scenario: Simultaneous sampling of 8+ analog channels via multiplexer in compact environmental logger. IC Role / Device Role / Timing Role: One ADS7816EB/2K5G4 per channel or time-multiplexed shared device; CS-driven short-cycling used for threshold detection. Use Value: Short-cycling after 4–6 bits reduces average power by >70% during idle monitoring; serial interface minimizes GPIO count. |
Use Scenario: Soil moisture and ambient light sensing in solar-powered agricultural IoT nodes. IC Role / Device Role / Timing Role: ADC core in ultra-low-duty-cycle system; wakes every 5 minutes for 200 µs conversion burst. Use Value: 3 µA shutdown current dominates total system sleep current; 25 pF input capacitance allows direct connection to high-Z resistive sensors. |
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 |
|---|---|---|---|
| ADS7816U | SOIC-8 package; ±2 LSB INL (grade U) vs ±1 LSB (EB); identical electrical specs otherwise. | Less stringent linearity requirement; preferred where board space allows larger package and cost sensitivity outweighs precision. | Select ADS7816U if SOIC-8 reflow compatibility or lower unit cost is prioritized over MSOP miniaturization and tighter INL. |
| ADS7822U | 8-bit resolution, 200 kHz, same MSOP-8 package; 1.25 mW power; no differential input - single-ended only. | Lower resolution suffices (e.g., basic voltage monitoring); no need for remote ground sensing or sub-1 LSB accuracy. | Choose ADS7822U only when 8-bit resolution meets system SNR requirements and differential input is unnecessary. |
Compared with ADS7816EB/2K5G4, ADS7816U trades package size and cost for relaxed linearity, while ADS7822U sacrifices resolution and differential capability for reduced complexity and power - neither is pin-compatible, and both require schematic and layout revision.
Availability
ADS7816EB/2K5G4 is available at Aetrix Electronics and suitable for portable battery-powered sensors, isolated industrial monitoring, multi-channel data acquisition, and low-power environmental sensing requiring stable component supply across extended production lifecycles.
Supply support for ADS7816EB/2K5G4 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
Burr-Brown Corporation, acquired by Texas Instruments in 2000, specialized in precision analog ICs including data converters, amplifiers, and references for industrial and instrumentation markets.
The ADS7816EB/2K5G4 belongs to Burr-Brown's micro-power SAR ADC product line, designed specifically for battery-operated and isolated measurement systems demanding high resolution without sacrificing energy efficiency.
FAQ
What is the maximum sampling rate supported by the ADS7816EB/2K5G4?
The ADS7816EB/2K5G4 supports a maximum sampling rate of 200 kHz, achieved with a 3.2 MHz DCLOCK signal (16× oversampling ratio). At this rate, conversion time is fixed at 12 clock cycles, and acquisition time is 1.5 clock cycles. Reducing DCLOCK frequency proportionally lowers throughput, with minimum functional clock at 10 kHz (625 Hz effective sampling).
Does the ADS7816EB/2K5G4 include an internal voltage reference?
No, the ADS7816EB/2K5G4 requires an external reference voltage applied to the VREF pin. It operates with any stable reference from 100 mV to 5 V, and the reference current draw depends on sample rate and output code (e.g., 38–100 µA at 200 kHz, code 710h). No internal reference is present - all scaling is externally determined.
What is the meaning of "EB" in ADS7816EB/2K5G4?
The "EB" suffix denotes the performance grade of the ADS7816EB/2K5G4: Integral Linearity Error (INL) is ±2 LSB max and Differential Linearity Error (DNL) is ±1 LSB max over –40°C to +85°C. This grade offers tighter linearity than the standard "U" grade (±2 LSB INL/DNL) and is specified in the official Burr-Brown ordering table.
Can the ADS7816EB/2K5G4 perform short-cycle conversions?
Yes, the ADS7816EB/2K5G4 supports short-cycling: pulling CS/SHDN HIGH at any point during serial output terminates conversion and places DOUT in high-impedance state. This allows early termination after 3–8 bits when full 12-bit resolution is unnecessary - reducing average power and enabling rapid threshold detection in event-driven systems.
What package type is used for the ADS7816EB/2K5G4?
The ADS7816EB/2K5G4 uses an 8-lead MSOP package (Package Drawing 337), with dimensions 3.0 mm × 3.0 mm × 1.0 mm and 0.65 mm lead pitch. It is distinct from the PDIP (P) and SOIC (U) variants and requires MSOP-specific footprint and reflow profile per JEDEC J-STD-020C.
ADS7816EB/2K5G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-VSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS7816EB/2K5G4 FAQ
1.How can I place an order for ADS7816EB/2K5G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7816EB/2K5G4 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 ADS7816EB/2K5G4 reliable?
The price and inventory of ADS7816EB/2K5G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7816EB/2K5G4 is usually 5 days.
3.What payment methods are accepted for ADS7816EB/2K5G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7816EB/2K5G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7816EB/2K5G4?
ADS7816EB/2K5G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7816EB/2K5G4 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 ADS7816EB/2K5G4?
For technical support, including ADS7816EB/2K5G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7816EB/2K5G4 requirements.
6.How does Aetrix verify that ADS7816EB/2K5G4 is sourced from the original manufacturer or authorized distributors?
All ADS7816EB/2K5G4 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 ADS7816EB/2K5G4 meets industry standards.
7.What is the process for return or replacement of ADS7816EB/2K5G4?
All ADS7816EB/2K5G4 units undergo pre-shipment inspection (PSI). If there is an issue with ADS7816EB/2K5G4, 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 ADS7816EB/2K5G4 part is unused and in its original packaging.
Return procedure for ADS7816EB/2K5G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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