TLV1549ID - 10-Bit 38 kSPS Serial ADC | Texas Instruments
Référence : TLV1549ID ✓ ActifTLV1549ID Présentation
An analog-to-digital converter is an interface IC that converts a continuous analog voltage into a numeric code for processing by a microcontroller, DSP, logic system, or industrial controller. The TLV1549 belongs to the ADC hierarchy that includes SAR ADCs, data-converter ICs, interface ICs, and semiconductors. Its inherent sample-and-hold function allows the analog input to be captured during conversion, while the serial interface reduces the number of signals required to connect it to a controller.
The principal features verified for the TLV1549ID include 10-bit conversion resolution, a maximum conversion rate of 38 kSPS, one analog input, switched-capacitor operation, and a three-wire serial interface. The digital side includes chip select, input-output clock, and data output functions, with a three-state output arrangement. These characteristics make the device suitable for compact embedded acquisition systems where sampling rate, interface simplicity, and package size matter more than high-resolution conversion.
The serial interface includes chip select, input-output clock, and data output signals. The input-output clock can support the device's serial transfer process, while chip select provides control for shared-bus arrangements. Because the converter uses the I/O clock for serial communication, the host controller must conform to its timing and data-transfer requirements. Exact timing, reference-voltage, and electrical limits should be confirmed in the manufacturer datasheet before layout or firmware is finalized.
Typical uses include low-speed sensor acquisition, industrial monitoring, battery-powered instrumentation, temperature measurement, and embedded control loops that convert one analog channel into a 10-bit value. The 38 kSPS rate is suitable for signals that do not require continuous high-rate waveform capture, while the 8-pin SOIC package supports conventional surface-mount assembly and hand-soldering or automated placement.
Designers should preserve the power and decoupling layout recommended by the manufacturer, connect the analog source with low impedance, and keep sensitive analog routing away from fast digital clock traces. Verify the exact input range, reference configuration, sampling characteristics, clock timing, and operating-temperature grade against the TLV1549 datasheet because those values were not included in the supplied web excerpts.
This product record combines the verified manufacturer description, distributor identification, package information, and cross-reference evidence with practical selection guidance. It also distinguishes documented TLV1549 characteristics from parameters that still require confirmation, helping engineers identify likely drop-in choices without overlooking grade, timing, or interface differences.
Alternatives de remplacement direct pour TLV1549ID — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec TLV1549ID (même facteur de forme et même empreinte) — différant par ADC Type, Interface Signals.
TLC1549CD
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TLC1549ID
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
TLC1549IP
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
TLC1549MIP
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
TLV1549CID
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
TLV1549ID Valeurs maximales et caractéristiques électriques
| ADC Type | Successive-approximation register (SAR) ADC |
| Résolution | 10 bit |
| Fréquence d'échantillonnage | 38 kSPS |
| Analog Input Channels | 1 channel |
| Input Type | Single-ended |
| Conversion Architecture | Switched-capacitor successive approximation |
| Sample-and-Hold Function | Inherent |
| Digital Output Interface | 3-wire serial output |
| Digital Control Inputs | 2 inputs |
| Output State | 3-state output |
| Interface Signals | CS, I/O CLOCK, and DATA OUT |
| Tension d'alimentation | 3.3 V |
| Boîtier | 8-pin SOIC (D) |
| Type de montage | Surface mount |
| Nombre de broches | 8 pins |
| Temperature Grade Suffix | I |
Guide de configuration des broches du TLV1549ID 8-pin soic (d)
Configuration des broches du TLV1549ID (boîtier 8-pin soic (d)). Ce composant analogique comporte des broches d'entrée, de sortie et d'alimentation. Consultez la fiche technique du fabricant pour les configurations des broches d'annulation d'offset, de compensation et d'activation. Idéal pour le conditionnement de signaux et les circuits amplificateurs.
Aucune donnée de brochage détaillée disponible pour TLV1549ID.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
TLV1549ID convient pour 6 applications: Industrial Sensor Acquisition, Temperature Monitoring, Battery-Powered Instrumentation, Embedded Control Loops, Process and Equipment Monitoring, Low-Rate Waveform Sampling.
Industrial Sensor Acquisition
The TLV1549ID suits industrial sensing systems that monitor one slowly changing or moderately dynamic analog variable. Its 10-bit SAR conversion produces 1,024 numerical levels, while the 38 kSPS rate provides more than enough sampling capability for many temperature, pressure, position, and level sensors. Place the converter behind the conditioned sensor output and connect it through the three-wire CS, I/O CLOCK, and DATA OUT interface to reduce wiring and PCB area. The main design consideration is that the sensor signal must remain within the converter’s verified input range, with the reference arrangement selected from the manufacturer datasheet. Because the supplied excerpts do not specify input impedance or acquisition time, use the datasheet to determine whether an acquisition buffer or additional filtering is required.
Temperature Monitoring
A TLV1549ID can digitize a conditioned thermistor, RTD, or temperature-sensor signal for an embedded controller. The 10-bit resolution provides 1,024 code levels, and 38 kSPS is substantially faster than the update rate normally required for thermal monitoring. The converter’s one-input SAR architecture is useful when the controller periodically selects a sensor through external analog switching. Keep the sensor network close to the converter and away from high-current digital traces to reduce coupled noise. Verify the exact analog-input range, reference requirements, and conversion timing before choosing resistor values because these parameters were not present in the supplied distributor excerpts.
Battery-Powered Instrumentation
The TLV1549ID is appropriate for portable measurement equipment where a microcontroller periodically reads a single analog channel. Its three-wire serial interface minimizes connector and routing requirements, while the 38 kSPS rate allows the host to take measurements without using a high-speed parallel ADC. The device can operate alongside battery-powered sensor circuitry when its supply and reference design meet the datasheet limits. Because shutdown current was not included in the supplied data, battery-life calculations must use the current manufacturer datasheet rather than assuming a value. Select large input and bypass capacitors using the application’s noise and power-impedance requirements, and confirm that the reference remains valid during the converter’s complete operating range.
Embedded Control Loops
In an embedded control loop, the TLV1549ID can convert a feedback or supervisory analog signal into a 10-bit code for comparison and actuation by a microcontroller or DSP. At 38 kSPS, the ADC is suited to many sampled control and monitoring functions, particularly where one analog measurement must be serviced on a shared serial bus. Chip select provides a means of managing the device in a multi-peripheral arrangement, while the I/O CLOCK and DATA OUT signals minimize pin count. Firmware must implement the converter’s serial timing and transfer sequence exactly. Because the supplied results do not document acquisition time, latency, or output-code format, those details should be taken directly from the TLV1549 datasheet during firmware development.
Process and Equipment Monitoring
The TLV1549ID can serve as the conversion stage for a low-frequency process variable in compact industrial equipment. A 10-bit ADC provides useful resolution for supervisory measurements, and 38 kSPS allows the controller to sample the conditioned input repeatedly without requiring a parallel bus. The 8-pin SOIC package supports dense, surface-mount assemblies and is compatible with common automated manufacturing processes. To avoid measurement error, keep the analog input path short, place filtering close to the converter, and separate it from switching-node and clock traces. The design should include a defined relationship between the converter reference and the accepted input range. Exact input-range and common-mode restrictions must be verified before production release.
Low-Rate Waveform Sampling
TLV1549ID can capture low-rate or burst-oriented analog waveforms when the application does not need the throughput of a dedicated high-speed ADC. Its 38 kSPS SAR conversion rate and 10-bit resolution provide a practical balance for envelopes, slow control waveforms, and diagnostic signals. Host firmware can initiate conversions and retrieve each result through the shared input-output clock and data output. The serial architecture reduces routing overhead compared with a 10-bit parallel ADC, although software must handle clocking and sample indexing accurately. For repetitive or high-accuracy waveform work, evaluate the converter’s acquisition characteristics and source impedance from the datasheet; those details were not present in the supplied excerpts and must not be inferred from the headline sampling rate.
Données de référence d'ingénierie pour TLV1549ID — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | TLC1549CD | TLC1549ID | TLC1549IP | TLC1549MIP | TLV1549CID |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-pin SOIC (D) | 8-pin SOIC (D) | 8-pin SOIC (D) | 8-pin SOIC (D) | 8-pin SOIC (D) | 8-pin SOIC (D) |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit |
| Sampling Rate | 38 kSPS | 38 kSPS | 38 kSPS | 38 kSPS | 38 kSPS | 38 kSPS |
| ADC Architecture | Switched-capacitor SAR | Switched-capacitor SAR | Switched-capacitor SAR | Switched-capacitor SAR | Switched-capacitor SAR | Switched-capacitor SAR |
| Digital Interface | 3-wire serial | 3-wire serial | 3-wire serial | 3-wire serial | 3-wire serial | 3-wire serial |
Principaux différenciateurs
- Verified 10-bit, 38 kSPS SAR conversion specification (vs TLC1549CD)
- Three-wire serial interface reduces connection count (vs TLC1549IP)
- One-input architecture supports compact measurement channels (vs TLC1549MIP)
Notes de conception
Keep the analog input and reference paths short and place the manufacturer's recommended input and bypass capacitors close to their associated pins. Route the I/O CLOCK and DATA OUT signals away from the analog input, especially if the source impedance is high. A solid ground return and a low-impedance connection between the converter and its reference are essential because external trace resistance and shared current paths can contribute directly to conversion error.
Treat the input-output clock as the timing reference for serial transfers and follow the manufacturer’s specified clock and data setup requirements. Account for propagation delay in the host controller and avoid beginning a new conversion until the required acquisition interval has elapsed. If the analog source has appreciable impedance, use the datasheet acquisition-time data to determine whether a buffer or additional sampling interval is necessary.
Do not infer the allowed analog-input range, reference voltage, or operating-temperature limits from the distributor headlines. The supplied evidence confirms 10-bit resolution, 38 kSPS operation, one input, SAR architecture, and the 8-pin SOIC package, but it does not provide complete electrical limits. Before substituting a related device, verify the analog pin, reference implementation, clock timing, output coding, device grade, and qualification status against both datasheets.
Informations de conformité
The supplied search excerpts do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for the exact TLV1549ID ordering code. The I suffix identifies a temperature-grade option but is not treated as proof of automotive qualification.