TLV0834 - 8-Bit 41 kSPS 4-Ch SAR ADC | Texas Instruments
料号： TLV0834 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.95 | $1.95 |
| 10 | $1.76 | $17.60 |
| 100 | $1.45 | $145.00 |
| 500 | $1.2 | $600.00 |
| 1,000 | $0.98 | $980.00 |
TLV0834 概述
An ADC is a semiconductor device that converts continuous analog signals into discrete digital values so microprocessors can process real-world sensor data. The TLV0834 belongs to the SAR ADC family, which balances speed, resolution, and power for medium-speed data acquisition, within the broader hierarchy of data converter ICs and mixed-signal semiconductors.
Key features include 8-bit resolution with no missing codes, 41 kSPS maximum throughput, a 2/3/4-channel multiplexer with software address logic, and differential input capability that enables common-mode rejection or offset of the analog zero point. The device operates ratiometrically or with a VCC reference, simplifying reference design in low-voltage systems.
Architecturally, the TLV0834 uses a sample-data comparator performing successive approximation on the selected differential input pair. The serial interface minimizes pin count and supports easy microprocessor interface or stand-alone operation. The analog input range spans from ground (0 V) to VCC when using the VCC reference, covering the full supply span without external scaling in many designs.
Typical applications include portable and battery-powered instrumentation, multi-channel industrial data acquisition, and remote sensor monitoring. Low supply voltage and serial output make it compatible with modern microcontrollers and DSPs such as the TI MSP430 family.
Design consideration: never let analog inputs exceed VCC, and decouple the supply with a 0.1uF ceramic capacitor close to the pin for stable conversions. Prices referenced are as of 2026-08-29.
直接替换替代料： TLV0834 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
TLV0838
✅ 直接替换📋 参考替代料（不在目录中）
TLV0834IPW
✅ 直接替换📋 参考替代料（不在目录中）
TLV0834ID
✅ 直接替换📋 参考替代料（不在目录中）
TLC0834
⚡ 相同封装 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADC0834
⚡ 相同封装 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TLV0834 最大额定值与电气特性
| 分辨率 | 8 bit |
| 采样率 | 41 kSPS |
| Number of Channels | 4 |
| Architecture | SAR (successive approximation) |
| Input Type | Single-ended, differential, pseudodifferential |
| 电源电压 | 2.7 V to 3.6 V |
| Analog Input Range | 0 V to VCC (with VCC reference) |
| Reference | VCC (ratiometric operation) |
| 接口 | Serial input/output, TTL/MOS compatible |
| Number of Inputs | 2, 3, 4 |
| Number of ADCs | 1 |
| 封装 | 16-TSSOP (PW) / 16-SOIC (D) |
| 安装类型 | Surface Mount |
| Multiplexer Configuration | Software-configured single-ended or differential |
TLV0834 引脚配置
| 引脚 1 | CS — Chip select (active low) |
| 引脚 2 | CH0 — Analog input channel 0 |
| 引脚 3 | CH1 — Analog input channel 1 |
| 引脚 4 | CH2 — Analog input channel 2 |
| 引脚 5 | CH3 — Analog input channel 3 |
| 引脚 6 | GND — Ground |
| 引脚 7 | DI — Serial data input (multiplexer address) |
| 引脚 8 | DO — Serial data output |
| 引脚 9 | CLK — Serial clock input |
| 引脚 10 | SARS — Successive approximation register status |
| 引脚 11 | REF — Reference voltage (tie to VCC for ratiometric) |
| 引脚 16 | VCC — Power supply, 2.7 V to 3.6 V |
典型应用
TLV0834 适用于 6 应用s: Portable Battery-Powered Instrumentation, Multi-Channel Industrial Data Acquisition, Remote Sensor Monitoring, Motor Control Feedback Sensing, Audio Level and Panel Control Reading, Security and Surveillance Sensor Interface.
Portable Battery-Powered Instrumentation
The TLV0834's 2.7V to 3.6V supply range and 41 kSPS throughput make it ideal for handheld and portable instruments powered by two AA cells or a single lithium cell. Its ratiometric VCC-reference operation lets bridge and resistive sensor readings track battery voltage without a separate reference IC, and the 4-channel multiplexer samples multiple sensors with one converter, reducing BOM cost and board area in space-constrained portable designs.
推荐
Multi-Channel Industrial Data Acquisition
In industrial monitoring panels, the TLV0834's software-configurable multiplexer supports single-ended, differential, and pseudodifferential assignments, allowing flexible channel mapping for thermistors, potentiometers, and current-sense outputs. The differential mode provides common-mode rejection for noisy factory-floor signals, and the 41 kSPS rate covers process variables that change over milliseconds. The 16-TSSOP surface-mount package fits dense acquisition boards with minimal footprint.
推荐
Remote Sensor Monitoring
For remote telemetry nodes, the TLV0834's low pin count serial interface (CS, CLK, DI, DO) minimizes wiring to a remote microcontroller and supports stand-alone operation. Its 8-bit resolution is sufficient for threshold-based alarms and coarse environmental monitoring, while the 0 V to VCC input range accepts raw sensor outputs without scaling circuitry. Ratiometric operation keeps readings consistent as supply voltage drifts in solar or battery-powered remote sites.
推荐
Motor Control Feedback Sensing
Low-cost motor drives can use the TLV0834 to digitize potentiometer-based position feedback and coarse current monitoring at up to 41 kSPS. The pseudodifferential input mode offsets the analog zero point, useful for bidirectional current signals referenced above ground. Paired with a C2000 MCU, the serial ADC supplements the MCU's internal ADC with extra channels without burdening the main control loop.
推荐
Audio Level and Panel Control Reading
In audio equipment, the TLV0834 digitizes rotary potentiometer and slider positions for digital panel control, sampling up to 4 controls on its multiplexer. Its 41 kSPS rate is far above the human hand-movement bandwidth, guaranteeing latency-free knob tracking, and the serial interface isolates the noisy analog panel wiring from the digital audio domain. The 8-bit resolution matches the 256-step granularity of typical digitally controlled volume schemes.
推荐
Security and Surveillance Sensor Interface
Surveillance and alarm panels use the TLV0834 to convert analog signals from PIR sensors, light detectors, and tamper potentiometers. The differential input capability rejects common-mode noise from long cable runs between sensor and panel, and the software-configurable channel assignment lets one ADC serve multiple zones. Its low 3V operation aligns with battery-backup panel supplies for reliable operation during mains failure.
推荐
推荐产品汇总
工程参考数据： TLV0834 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TLV0838 | TLC0834 | ADC0834 |
|---|---|---|---|---|
| Package | 16-TSSOP (PW) / 16-SOIC (D) | 16-TSSOP / 16-SOIC | 16-pin SOIC/TSSOP | 16-pin SOIC/TSSOP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 8 bit | 8 bit | 8 bit | 8 bit |
| Channels | 4 | 8 | 4 | 4 |
| Interface | Serial I/O, TTL/MOS | Serial I/O, TTL/MOS | Serial I/O | Serial I/O |
| Input Modes | Single-ended / differential / pseudodifferential | Single-ended / differential / pseudodifferential | Single-ended / differential | Single-ended / differential |
关键差异点
- 4-channel cost-optimized multiplexer （对比 TLV0838)
- Low-voltage 3V operation （对比 ADC0834)
- Differential input with zero-offset （对比 TLC0834)
设计说明
Decouple VCC with a 0.1uF ceramic capacitor placed within 2 mm of the supply pin, plus a 1uF bulk capacitor nearby. Because the TLV0834 typically uses VCC as its reference in ratiometric mode, supply noise appears directly in the conversion result - keep the ADC supply separated from digital switching loads with an RC filter or ferrite bead.
Never allow analog input voltage on CH0-CH3 to exceed VCC, even transiently, or the internal multiplexer may conduct into the supply and corrupt adjacent-channel readings. For signals from long cables, add series resistance (1k to 10k) and clamp diodes to VCC and GND at the input pins.
The multiplexer address is clocked in on the DI line while CS is low; verify the serial timing in the TI datasheet against your MCU SPI mode, since the DI/DO share a shifted timing relationship with CLK. Mismatched SPI clock polarity is the most common bring-up failure with this part family.
合规信息
Compliance data not present in provided verified web data; consult TI product page for TLV0834 environmental certifications.
