TLV1549IP - 10-Bit 38 kSPS Serial ADC | Texas Instruments
MPN: TLV1549IP ✓ ActiveTLV1549IP Overview
An ADC is a data-acquisition semiconductor that converts an analog voltage into a numeric code. A successive-approximation ADC performs conversion by repeatedly testing internal capacitor-derived thresholds and progressively refining a binary result. The TLV1549 belongs to the ADC hierarchy that also includes data converters, interface ICs, and mixed-signal semiconductors. Its serial interface reduces the number of signal paths needed when a controller must acquire slowly changing or moderate-speed analog measurements.
The principal verified specifications are 10-bit resolution, a conversion rate of 38 kSPS, one analog input, and serial output. The inherent sample-and-hold function supports acquisition without requiring a separate external sample-and-hold amplifier. The switched-capacitor internal architecture enables the converter to implement its successive-conversion process without an external track-and-hold stage. An industrial-temperature grade ordering option is identified by the I suffix, although complete temperature limits are not included in the supplied source data.
The TLV1549IP is especially useful where a controller needs moderate-resolution measurements and a compact serial interface rather than a high-throughput parallel ADC. Its 10-bit code provides 1,024 possible digital output levels, while the 38 kSPS conversion capability supports periodic monitoring and control loops. Because the verified data does not specify input range, reference voltage, accuracy, power consumption, or digital logic levels, designers should consult the manufacturer datasheet before establishing the analog front end or logic interfaces.
Typical uses include industrial sensor acquisition, temperature and pressure monitoring, potentiometer position measurement, battery-voltage monitoring, and low-bandwidth process-control instrumentation. The three-wire interface can connect conveniently to a microcontroller with software-controlled clocking and chip select. Because the converter is serial and relatively compact, it is also useful in mixed-signal systems where board space and connector count matter more than maximum sampling throughput.
The most important design step is to verify the complete electrical operating envelope from the Texas Instruments datasheet. Designers must confirm analog input range, voltage-reference requirements, conversion timing, supply voltage, input capacitance, logic thresholds, and acquisition-time constraints. The serial interface also requires a defined clocking sequence, while the single analog input means that multiplexing or switching must be added externally when several sources must be measured.
This product page combines verified manufacturer and distributor information with practical application guidance, interface considerations, and a parameter-based comparison. It distinguishes confirmed TLV1549IP facts from specifications that still require validation, helping engineers identify whether the 10-bit, 38 kSPS, single-input ADC belongs in a new design or an existing legacy-compatible design.
Drop-in alternatives for TLV1549IP — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TLV1549IP (same form factor and footprint) — differing in Architecture, Output Type, Package, Sample-and-Hold Function.
TLC1549IP
✅ Drop-In📋 Reference alternative (not in catalog)
TLC1549CP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TLC1549MP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TLV1549CP
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →TLV1549MP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TLV1549IP Maximum Ratings & Electrical Characteristics
| Resolution | 10 bit |
| Sampling Rate | 38 kSPS |
| Architecture | Successive-approximation ADC |
| Internal Conversion Mechanism | Switched-capacitor |
| Analog Input Count | 1 input |
| Output Type | Serial output |
| Sample-and-Hold Function | Inherent sample-and-hold |
| Digital Interface | 3-wire interface: chip select, I/O clock, and data output |
| Digital Output State | 3-state output |
| Package | 8-pin PDIP (P) |
| Pin Count | 8 pins |
| Mounting Type | Through-hole |
| Temperature Grade | Industrial grade indicated by I suffix |
| Legacy Terminal Compatibility | Compatible with TLC1549 and TLC1549x terminal arrangements |
TLV1549IP 8-pin pdip (p) Pin Configuration Guide
Pin configuration for TLV1549IP (8-pin pdip (p) package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for TLV1549IP.
Refer to the datasheet for full pin configuration.
Typical Applications
TLV1549IP is suitable for 6 applications: Industrial Sensor Signal Acquisition, Temperature and Pressure Monitoring, Battery Voltage Monitoring, Potentiometer Position Measurement, Process Control Instrumentation, Audio and Communication-Level Monitoring.
Industrial Sensor Signal Acquisition
The TLV1549IP fits industrial sensor acquisition when the required resolution does not exceed 10 bits and measurements can be captured at up to 38 kSPS. Place the single analog input behind an appropriate conditioning network, then use the chip-select, I/O clock, and data-output lines to transfer each result to a controller. Its 38 kSPS capability provides sampling headroom for rapidly changing sensor signals compared with much slower converters. The inherent sample-and-hold function and 8-pin PDIP package also simplify legacy industrial measurement boards. Before finalizing the design, verify the supported input range, acquisition time, reference voltage, input impedance, and operating-temperature limits in the manufacturer datasheet.
Recommended
Temperature and Pressure Monitoring
The TLV1549IP can digitize conditioned outputs from temperature, pressure, and other resistive sensors when a 10-bit measurement is sufficient. A bridge or sensor amplifier can translate the physical quantity into an analog voltage compatible with the ADC input, while the controller selects the converter and supplies the I/O clock. At 38 kSPS, the converter supports periodic readings with more timing margin than a low-rate ADC. Because sensor errors and reference accuracy may dominate a 10-bit measurement, system calibration and reference selection should be treated as part of the design. Confirm the converter's specified input range and recommended source impedance before selecting passive and active conditioning components.
Recommended
Battery Voltage Monitoring
The TLV1549IP is suitable for supervisory battery-voltage measurement when the system requires a compact, serialized reading rather than a dedicated monitoring IC. The battery or divider output is applied to the single analog input, and the controller clocks successive conversions through the three-wire interface. The 38 kSPS rate is substantially above typical supervisory update rates, while the 10-bit result provides 1,024 discrete codes. Useful implementation steps include verifying the allowed analog-input range, adding the correct resistor-divider ratio, and protecting the input from transients. A microcontroller can apply averaging or calibration to the digital result, although the converter's reference-voltage accuracy must be included in the final error budget.
Recommended
Potentiometer Position Measurement
The TLV1549IP can measure potentiometer wiper position where 10-bit resolution is adequate and the board benefits from a simple three-wire digital interface. Connect the potentiometer to the supply and ground rails, route its wiper to the ADC input, and use chip select to control when the controller captures a conversion. The 38 kSPS capability allows rapid position sampling for manual controls, test fixtures, or basic motion feedback. Signal loading, wiper impedance, and the ADC acquisition characteristics must be checked because a high source impedance or an input-capacitance requirement may require buffering. The DIP-8 footprint is also useful when maintaining an existing through-hole control board or providing a straightforward prototype layout.
Recommended
Process Control Instrumentation
The TLV1549IP can serve as the acquisition element in a low-bandwidth process-control instrument when fast parallel data transfer is unnecessary. A conditioned process voltage is applied to the single ADC input, while the controller uses chip select, clock, and data lines to obtain periodic readings for display, logging, or a feedback loop. Its 38 kSPS rate allows configurable averaging and update intervals, and its 10-bit output is practical for many slowly changing process variables. The design must include input-range protection and a stable reference, and the analog bandwidth should be checked against the controller's sampling cadence. For applications requiring greater precision, higher resolution, or simultaneous inputs, a dedicated higher-performance data-conversion architecture may be more appropriate.
Recommended
Audio and Communication-Level Monitoring
The TLV1549IP can be used for communication-level, audio-control, or general mixed-signal monitoring when only 10-bit measurement resolution is needed. Place the converter in a legacy mixed-signal design with a controller that supports bit-banged clocking or a dedicated serial interface. The 38 kSPS rate is suitable for many control and monitoring loops, but it is not intended for high-bandwidth audio waveform capture. The key design consideration is keeping the analog input within its specified range while controlling switching noise from nearby digital circuitry. Starve the converter with a suitable reference and bypass arrangement, isolate sensitive inputs from fast digital edges, and use the manufacturer datasheet to confirm input bandwidth, acquisition behavior, and logic compatibility.
Recommended
Recommended Products Summary
Engineering reference data for TLV1549IP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLC1549IP | TLC1549CP | TLC1549MP | TLV1549CP | TLV1549MP |
|---|---|---|---|---|---|---|
| Package | PDIP-8 (P) | PDIP-8 (P) | PDIP-8 (P) | PDIP-8 (P) | PDIP-8 (P) | PDIP-8 (P) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit |
| Conversion Architecture | Switched-capacitor successive approximation | Successive approximation | Successive approximation | Successive approximation | Switched-capacitor successive approximation | Switched-capacitor successive approximation |
| Digital Interface | Chip select, I/O clock, and 3-state data output | 3-wire interface | 3-wire interface | 3-wire interface | 3-wire interface | 3-wire interface |
| Orderable Grade Suffix | I | I | C | M | C | M |
Key Differentiators
- Higher verified conversion throughput than a legacy TLC549-class replacement (vs TLC549IPE4)
- Explicit inherent sample-and-hold function (vs TLC1549IP)
- Documented terminal compatibility with both TLC1549 and TLC1549x families (vs TLV1549CP)
Design Notes
Do not begin layout or firmware integration until the complete numbered pin table and serial timing diagram have been checked in the manufacturer datasheet. The verified sources confirm the 8-pin PDIP package and identify chip select, I/O clock, and data output, but they do not provide a complete pin-number map. This is especially important because clock polarity, chip-select behavior, output enable timing, and the acquisition interval determine whether an existing TLC1549-oriented firmware and PCB can be reused without modification.
Route the analog input away from the I/O clock, data output, chip-select line, and any nearby switching supply or digital-return current. Keep the analog source impedance and interconnect length within the acquisition limits specified by the manufacturer. If the sensor or divider presents a high source impedance, place a suitable buffer near the converter rather than extending a long high-impedance trace. Grounding and bypass connections should follow the datasheet reference layout rather than generic through-hole conventions.
Confirm supply voltage, reference requirements, power consumption, and decoupling recommendations before committing to a power rail. The supplied sources do not include those electrical limits, so no capacitor value or voltage rating is asserted here. Use the manufacturer reference configuration and place the prescribed bypass capacitor close to the device. A stable, adequately decoupled reference is essential because reference variation directly contributes to the uncertainty of a 10-bit conversion.
Treat the TLV1549IP and TLC1549-family devices as compatibility candidates, not automatically identical parts. The ordering suffix can select a different temperature grade, and the manufacturer documentation describes terminal compatibility rather than guaranteeing that every electrical characteristic is unchanged. For an unqualified substitution, compare supply range, absolute maximum ratings, conversion timing, input range, reference voltage, logic levels, accuracy, package drawing, and the exact numbered pinout. Record the approved alternate MPN in the BOM only after this comparison.
Compliance Information
The supplied manufacturer and distributor results do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. AEC-Q100 is marked not applicable because this is an industrial-temperature ADC rather than an automotive-qualified ordering option.
