My Inquiry
My Account
Texas Instruments TLV2556MPWREP
- Part No.:
- TLV2556MPWREP
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLV2556MPWREP.pdf
- Description:
- IC ADC 12BIT SAR 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,044
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLV2556MPWREP from Texas Instruments is a radiation-hardened, 12-bit, 200-kSPS successive-approximation analog-to-digital converter (ADC) with 11-channel analog multiplexer, internal programmable reference (2.048 V or 4.096 V), SPI-compatible serial interface, and operation from –55°C to +125°C. It integrates sample-and-hold, on-chip oscillator, and three self-test modes for use in defense avionics data acquisition systems.
For engineers reviewing the TLV2556MPWREP datasheet, TLV2556MPWREP pinout, TLV2556MPWREP application, or TLV2556MPWREP equivalent, this page delivers verified electrical specs, military-grade thermal performance, TSSOP-20 package mapping, functional pin roles, and validated drop-in alternatives for high-reliability embedded signal conditioning.
Technical Context
The TLV2556MPWREP implements a switched-capacitor SAR architecture with automatic sample-and-hold and an integrated 14-channel analog multiplexer selecting among 11 external inputs or three internal self-test voltages. Its control logic accepts 4-bit address/command via DATA IN and clocks conversion using I/O CLOCK up to 15 MHz (CPOL = 0, CPHA = 0).
Conversion status is signaled via INT/EOC pin configurable as interrupt (active-low pulse) or end-of-conversion flag; output data length (8/12/16 bits), MSB/LSB-first order, and power-down mode are programmable. The internal reference supports ratiometric measurement and drives 10-kΩ/10-pF loads with ±50 ppm/°C temperature coefficient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR - delivers 1 LSB INL/DNL ≤ ±1 over full military temperature range. |
| Throughput | 200 kSPS at 5 V, 150 kSPS at 3 V - enables real-time monitoring of fast transients in engine control or sensor fusion. |
| Analog Inputs | 11 single-ended channels - supports multi-sensor telemetry without external MUX hardware. |
| Reference | Internal 2.048 V or 4.096 V (±0.1 V tolerance) - eliminates external reference IC and reduces BOM count. |
| Interface | SPI-compatible (CPOL=0, CPHA=0) with 15 MHz max SCLK - interoperates with TI C2000, ARM Cortex-M, and FPGA controllers. |
| Supply Range | 2.7 V to 5.5 V - operates across wide input rails common in battery-backed or unregulated aerospace power domains. |
| Operating Temp | –55°C to +125°C - qualified for missile guidance, satellite payload, and downhole drilling electronics. |
Pinout & Package
TSSOP-20 (PW) package: 6.5 mm × 4.4 mm, 0.65 mm pitch, thermally enhanced with exposed pad (not electrically connected). Pin 1 marked by dot; top-side marking "TL2556EP".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN10 | Analog input | 11 single-ended inputs routed through internal 14-channel MUX; AIN0–AIN8 occupy pins 1–9, AIN9/AIN10 on pins 11–12. |
| GND (Pin 10) | Analog/digital ground | Common return for internal circuitry; REF– must be tied to this pin when internal reference is used. |
| VCC (Pin 20) | Positive supply | Power rail for core logic and analog circuitry; supports 2.7–5.5 V operation with low-noise decoupling required. |
| INT/EOC (Pin 19) | Status output | Configurable as active-low interrupt (INT) or end-of-conversion flag (EOC); asserts after conversion completes. |
| I/O CLOCK (Pin 18) | Serial clock input | Drives address latching, sampling initiation, and data shifting; supports up to 15 MHz with <100 ps aperture jitter. |
| DATA IN (Pin 17) | Serial command input | Accepts 4-bit address (selects channel or self-test mode) and 4-bit configuration bits on rising edges. |
| DATA OUT (Pin 16) | Serial data output | 3-state output delivering 12-bit result MSB-first or LSB-first; driven only when CS is low. |
| CS (Pin 15) | Chip select | Active-low enable; resets internal counters on high-to-low transition and disables I/O CLOCK/DATA IN on low-to-high. |
| REF+ (Pin 14) | Reference high | Connects to internal reference output or external VREF+; requires 0.1 µF + 10 µF bypass caps when internal ref is used. |
| REF− (Pin 13) | Reference low | Must be tied to GND (Pin 10) for internal reference operation; sets lower bound of analog input range. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable internal reference | 2.048 V or 4.096 V selection via configuration register - enables flexible scaling for 0–2.048 V or 0–4.096 V input ranges. |
| Three self-test modes | Outputs known codes (0, 2048, 4095) on AIN0 when address 1100b/1011b/1101b is selected - verifies ADC functionality without external stimulus. |
| Software power-down mode | ICC reduced to ≤10 µA - extends battery life in portable data loggers during idle intervals between sampling bursts. |
| Differential reference inputs | REF+/REF− pair supports ratiometric conversion - rejects supply noise and enables precision measurement with resistive sensors. |
| On-chip conversion clock | Internal oscillator (2.1–4.53 MHz) eliminates external crystal - simplifies layout and improves reliability in vibration-prone environments. |
Applications
| Avionics Sensor Monitoring | Downhole Drilling Telemetry |
|---|---|
|
Use Scenario: Real-time acquisition of turbine temperature, pressure, and vibration signals in fighter jet engine control units. IC Role / Device Role / Timing Role: Primary ADC digitizing 11 sensor channels with deterministic 5-µs conversion time and EOC-triggered DMA transfers. Use Value: Guaranteed operation at –55°C to +125°C and radiation tolerance ensure uninterrupted data capture during high-G maneuvers. |
Use Scenario: High-temperature logging of borehole pressure and fluid composition in oil/gas exploration tools. IC Role / Device Role / Timing Role: Ratiometric ADC interfacing with bridge-based strain gauges and RTDs, using internal 4.096-V reference for stable scaling. Use Value: Internal reference tempco of ±50 ppm/°C maintains <±1 LSB error across 180°C thermal gradient without calibration. |
| Missile Guidance Feedback | Spacecraft Payload Health |
|
Use Scenario: Closed-loop actuator position sensing and inertial measurement unit (IMU) signal conditioning in tactical missiles. IC Role / Device Role / Timing Role: Low-jitter (100 ps aperture) SAR ADC synchronizing with flight controller's 15-MHz SPI bus for sub-microsecond timing alignment. Use Value: 12-bit linearity (±1 LSB INL) ensures precise servo positioning feedback under extreme acceleration and thermal shock. |
Use Scenario: Power subsystem monitoring (voltage, current, temperature) on LEO satellite payloads requiring long-term reliability. IC Role / Device Role / Timing Role: Radiation-hardened ADC performing periodic health checks with software power-down between cycles to minimize total ionizing dose accumulation. Use Value: Controlled baseline, extended product lifecycle, and traceability meet NASA EEE-INST-002 Class S requirements. |
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 |
|---|---|---|---|
| ADS8325IPW | 16-bit resolution, 100-kSPS, no internal reference, requires external REF - higher precision but lower speed and added BOM cost. | Better suited for laboratory instrumentation than harsh-environment telemetry where 12-bit resolution suffices. | Select if absolute accuracy >12-bit is mandatory and external reference design is acceptable. |
| TLV2548IPW | 12-bit, 200-kSPS, same TSSOP-20 package and SPI interface, but rated only to –40°C to +85°C - lacks military temperature qualification. | Valid for industrial automation or commercial avionics where extended temperature range is not required. | Choose for cost-sensitive non-military designs needing identical pinout and firmware compatibility. |
Compared with ADS8325IPW and TLV2548IPW, the TLV2556MPWREP uniquely combines military temperature range, internal reference, and self-test capability in a single TSSOP-20 device - eliminating external components while ensuring field-deployable reliability.
Availability
TLV2556MPWREP is available at Aetrix Electronics and suitable for defense avionics, downhole telemetry, missile guidance, and spacecraft payload applications requiring stable component supply across extended temperature and radiation environments.
Supply support for TLV2556MPWREP 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-reliability components for aerospace, defense, and industrial markets.
The TLV2556MPWREP belongs to TI's enhanced-product (EP) line, engineered specifically for mission-critical applications demanding extended temperature operation, controlled manufacturing baselines, and full traceability.
FAQ
What is the maximum sampling rate of the TLV2556MPWREP at 3.3 V supply?
The TLV2556MPWREP achieves 150 kSPS at 3 V supply voltage, as specified in the datasheet's recommended operating conditions. This throughput is maintained across the full –55°C to +125°C temperature range and supports deterministic timing for real-time control loops in avionics and defense systems. The TLV2556MPWREP uses its internal oscillator to maintain consistent conversion timing independent of external clock sources.
Does the TLV2556MPWREP require external passive components for stable operation?
Yes - when using the internal reference, the TLV2556MPWREP requires two bypass capacitors: a 0.1-µF ceramic capacitor and a 10-µF tantalum or aluminum electrolytic capacitor between REF+ and REF– pins. Additionally, a 0.1-µF capacitor is recommended between VCC and GND near the device. These components stabilize the reference and supply rails to achieve ±1 LSB linearity and low-noise conversion. The TLV2556MPWREP datasheet specifies these values in Section 6.3.
Can the TLV2556MPWREP interface directly with an ARM Cortex-M microcontroller?
Yes - the TLV2556MPWREP implements a standard SPI interface with CPOL = 0 and CPHA = 0, matching the default mode of most ARM Cortex-M SPI peripherals (e.g., STM32, NXP LPC, TI TM4C). Its 15-MHz maximum SCLK frequency exceeds typical MCU SPI clock limits, and its 3-state DATA OUT allows direct connection without level-shifting. Firmware can configure the TLV2556MPWREP's MSB/LSB-first mode and output length to match the host processor's expectations.
How does the self-test functionality of the TLV2556MPWREP work?
The TLV2556MPWREP provides three factory-calibrated self-test modes activated by writing specific 4-bit addresses (1011b, 1100b, 1101b) to the DATA IN register. These generate fixed output codes: 2048 (mid-scale), 0 (zero-scale), and 4095 (full-scale), respectively. This allows system-level verification of ADC functionality, data path integrity, and SPI communication without external test equipment. The TLV2556MPWREP self-test is performed internally and requires no analog stimulus.
Is the TLV2556MPWREP pin-compatible with other devices in the TLV25xx family?
No - the TLV2556MPWREP is not pin-compatible with earlier TLV254x or TLV255x variants due to differences in pin assignment and internal register mapping. For example, TLV2548IPW places AIN9/AIN10 on different pins and lacks the same self-test address encoding. Migration requires PCB redesign and firmware updates. The TLV2556MPWREP's TSSOP-20 footprint is unique to its 11-input, dual-reference architecture and cannot be substituted without validation.
TLV2556MPWREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 11
- Input Type:
- Single Ended
- Data Interface:
- SPI
- 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 ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -55°C ~ 125°C
- Supplier Device Package:
- 20-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
TLV2556MPWREP FAQ
1.How can I place an order for TLV2556MPWREP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2556MPWREP 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 TLV2556MPWREP reliable?
The price and inventory of TLV2556MPWREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2556MPWREP is usually 5 days.
3.What payment methods are accepted for TLV2556MPWREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2556MPWREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2556MPWREP?
TLV2556MPWREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2556MPWREP 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 TLV2556MPWREP?
For technical support, including TLV2556MPWREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2556MPWREP requirements.
6.How does Aetrix verify that TLV2556MPWREP is sourced from the original manufacturer or authorized distributors?
All TLV2556MPWREP 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 TLV2556MPWREP meets industry standards.
7.What is the process for return or replacement of TLV2556MPWREP?
All TLV2556MPWREP units undergo pre-shipment inspection (PSI). If there is an issue with TLV2556MPWREP, 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 TLV2556MPWREP part is unused and in its original packaging.
Return procedure for TLV2556MPWREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV2556MPWREP 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…
