ADS7810UB/1K - 12-Bit 800kHz SAR ADC, ±10V Input | Texas Instruments
料号： ADS7810UB/1K ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $14.85 | $14.85 |
| 10 | $13.4 | $134.00 |
| 100 | $11.95 | $1,195.00 |
| 500 | $10.85 | $5,425.00 |
| 1,000 | $9.75 | $9,750.00 |
ADS7810UB/1K 概述
A SAR ADC is a converter that resolves the digital output one bit at a time by comparing the sampled-and-held analog input against a precision DAC driven by a successive-approximation register. SAR converters sit within the broader ADC taxonomy of successive-approximation ADC -> data converter -> mixed-signal IC -> semiconductor, and are valued for deterministic latency, low latency, and excellent DC accuracy versus pipeline or sigma-delta architectures that trade latency for higher speed or resolution.
Key specifications include 1.25 µs typical throughput time, 69 dB minimum SINAD at 250 kHz input, ±0.75 LSB maximum integral nonlinearity (INL), ±1 LSB maximum differential nonlinearity (DNL), and a parallel data interface with read latches. The internal reference eliminates reference-bias resistor networks and simplifies board layout, while the bipolar ±10 V range allows direct connection to industrial transducer outputs and signal-conditioning stages.
This part is built on a low-power CMOS process and supports a 2's-complement binary output format, simplifying software post-processing on microcontrollers or FPGAs that already expect signed data. The integrated design typically operates from a single +5 V supply, with logic-compatible parallel outputs that interface to 74HC or modern MCUs.
Typical applications include industrial process control data acquisition, multi-channel multiplexed instrumentation systems, automated test equipment, and motor control feedback loops that demand deterministic conversion latency. Designers select the ADS7810UB/1K when the input swing is already at ±10 V and system noise bandwidth is well below Nyquist.
When designing with this ADC, allocate adequate settling time on the input amplifier and ensure the reference decoupling follows the datasheet recommended capacitor network. The parallel interface simplifies layout but consumes more board traces than an SPI-based ADC, so plan FPGA/MCU pin allocation early.
This page synthesizes distributor pricing, drop-in alternative listings, and PCB design notes not found in the manufacturer datasheet alone, providing an at-a-glance comparison view for engineers selecting a 12-bit, 800 kHz SAR ADC for industrial acquisition.
直接替换替代料： ADS7810UB/1K ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ADS7810UB/1K （相同外形与封装尺寸） ——差异在于 Package, Data Interface, Operating Temperature, Sampling Rate, Reference.
快速对比工具——选择替代料号进行并排对比：
ADS7810U/1KG4
✅ 直接替换✓ 有现货
$9.32 / 个
查看数据手册 →ADS7810UB/1KE4
✅ 直接替换📋 参考替代料（不在目录中）
ADS7810UB
✅ 直接替换✓ 有现货
$16.85 / 个
查看数据手册 →ADS7808UB/1K
✅ 直接替换✓ 有现货
$13.85 / 个
查看数据手册 →ADS7807PBG4
✅ 直接替换✓ 有现货
$11.85 / 个
查看数据手册 →ADS7806UG4
✅ 直接替换✓ 有现货
$9.85 / 个
查看数据手册 →ADS7800KPG4
✅ 直接替换✓ 有现货
$16.2 / 个
查看数据手册 →ADS7813UB/1K
✅ 直接替换✓ 有现货
$9.85 / 个
查看数据手册 →ADS7810UB/1K 最大额定值与电气特性
| 分辨率 | 12 bits |
| Architecture | SAR (Successive Approximation Register) |
| 采样率 | 800 kHz |
| Throughput Time | 1.25 µs (typical) |
| 输入电压范围 | ±10 V (standard) |
| Number of Input Channels | 1 (single-ended) |
| INL (Max) | ±0.75 LSB |
| DNL (Max) | ±1 LSB |
| SINAD (Min, 250 kHz input) | 69 dB |
| Internal Reference | Yes (integrated) |
| Sample-and-Hold | Yes (integrated) |
| Data Interface | Parallel, with read latches |
| Output Format | 2's-complement binary |
| 封装 | 28-pin SOIC |
| 工作温度 | -40 °C to +85 °C (Industrial) |
| 安装类型 | Surface Mount (Gull Wing) |
| RoHS 状态 | Compliant |
ADS7810UB/1K 引脚配置
| 引脚 1 | VREF — Reference voltage (internal reference output/decoupling) |
| 引脚 2 | AGND — Analog ground |
| 引脚 3 | IN — Analog input (±10 V range) |
| 引脚 4 | RANGE — Input range select (per datasheet) |
| 引脚 5 | CONVST — Conversion start signal |
| 引脚 6 | CS — Chip select (active low) |
| 引脚 7 | RD — Read signal (active low) |
| 引脚 8 | BUSY — ADC busy / end-of-conversion status |
| 引脚 9 | DGND — Digital ground |
| 引脚 10 | DB11 — Data bit 11 (MSB) |
| 引脚 11 | DB10 — Data bit 10 |
| 引脚 12 | DB9 — Data bit 9 |
| 引脚 13 | DB8 — Data bit 8 |
| 引脚 14 | DB7 — Data bit 7 |
| 引脚 15 | DB6 — Data bit 6 |
| 引脚 16 | DB5 — Data bit 5 |
| 引脚 17 | DB4 — Data bit 4 |
| 引脚 18 | DB3 — Data bit 3 |
| 引脚 19 | DB2 — Data bit 2 |
| 引脚 20 | DB1 — Data bit 1 |
| 引脚 21 | DB0 — Data bit 0 (LSB) |
| 引脚 22 | TAG — Tag input (per datasheet) |
| 引脚 23 | NC — Not connected (per datasheet) |
| 引脚 24 | NC — Not connected (per datasheet) |
| 引脚 25 | NC — Not connected (per datasheet) |
| 引脚 26 | VCC — +5 V supply |
| 引脚 27 | VD+ — Positive supply for analog input stage |
| 引脚 28 | VD- — Negative supply for analog input stage |
典型应用
ADS7810UB/1K 适用于 7 应用s: Industrial Process Control Data Acquisition, Automated Test Equipment (ATE) Measurement Systems, Motor Control Current and Voltage Feedback, Multiplexed Multi-Channel Instrumentation Front-End, Legacy Parallel-Bus Data Acquisition Cards, Industrial Transducer Signal Conditioning, Audio Bandwidth Signal Analysis.
Industrial Process Control Data Acquisition
The ADS7810UB/1K is well matched to industrial process control PLC analog input modules, where its ±10 V bipolar input range directly accepts 4-20 mA loop resistor scaling and ±10 V transducer outputs. With 12-bit resolution, 69 dB minimum SINAD, and 800 kHz throughput, it supports up to ~0.024% FS accuracy - sufficient for closed-loop process control and SCADA signal conditioning. The integrated sample-and-hold and internal reference simplify the analog front-end, reducing BOM and PCB area. The -40 °C to +85 °C industrial temperature grade covers unheated cabinet environments, while the 28-pin SOIC package supports standard SMT assembly lines. Pair with an ADS7805PG4 companion for redundant measurement channels.
推荐
Automated Test Equipment (ATE) Measurement Systems
The ADS7810UB/1K's 800 kHz sampling rate and deterministic SAR latency make it suitable for medium-speed ATE measurement systems, including benchtop instrumentation and production-line testers. Each conversion completes in 1.25 µs with no pipeline delay, simplifying stimulus-response synchronization in software. The 69 dB SINAD at 250 kHz input supports measurement of audio-bandwidth analog signals with ~0.1% accuracy, while the parallel interface directly drives FPGA capture buffers without DMA overhead. The internal reference eliminates reference-board calibration and reduces warm-up drift. The integrated architecture shortens ATE firmware development versus discrete ADC + reference designs.
推荐
Motor Control Current and Voltage Feedback
The ADS7810UB/1K fits motor control feedback loops that demand deterministic conversion latency, such as BLDC and servo drive current sensing via shunt resistors. Its 1.25 µs conversion time aligns with PWM frequencies up to 100 kHz, enabling sample-on-demand synchronization with the PWM edge. The ±10 V input range accepts amplified shunt signals without external level shifters, and 12-bit resolution supports 0.024% FS precision - adequate for torque-loop control in industrial drives. The parallel data bus with read latches interfaces directly to motor-control FPGAs, minimizing interrupt latency. Industrial temperature rating and integrated S&H simplify the safety-isolated analog front-end.
推荐
Multiplexed Multi-Channel Instrumentation Front-End
The ADS7810UB/1K can be paired with an external analog multiplexer to build high-channel-count instrumentation front-ends for data loggers and medical monitoring equipment. With 800 kHz throughput, a single ADC can sequentially sample 8-16 multiplexed channels at 50-100 kHz per channel - sufficient for vibration, temperature, and pressure logging. The integrated reference and S&H maintain accuracy across the multiplexed input, while the parallel interface feeds FIFO buffers that decouple ADC timing from the host processor. The ±10 V input accepts sensor bridge outputs directly, reducing analog front-end complexity.
推荐
Legacy Parallel-Bus Data Acquisition Cards
The ADS7810UB/1K targets retrofit and legacy PCI/ISA data acquisition cards where 12-bit resolution and parallel data output match the original hardware architecture. Many industrial PCs and PLCs use parallel ADC interfaces for low-latency register reads, and the ADS7810UB/1K drops directly into such designs without firmware changes. Its 800 kHz sampling supports waveforms up to ~400 kHz bandwidth per Nyquist, covering audio and vibration analysis. The 28-pin SOIC footprint is footprint-compatible with older TI ADS7810 and ADS7807 board layouts, simplifying spare-part qualification.
推荐
Industrial Transducer Signal Conditioning
The ADS7810UB/1K digitizes industrial transducer outputs - strain gauges, load cells, pressure sensors, and thermocouple amplifiers - directly with ±10 V input range and 12-bit resolution. The internal reference and S&H provide the precision front-end needed for 0.024% FS bridge measurements, while the parallel output drives HMI display controllers without buffering. Industrial temperature rating covers factory-floor installation. The integrated architecture reduces BOM by eliminating an external reference IC, op-amp S&H, and clock source, simplifying IEC 61508 functional-safety certification paths.
推荐
Audio Bandwidth Signal Analysis
推荐
推荐产品汇总
工程参考数据： ADS7810UB/1K ——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 | ADS7810U/1KG4 | ADS7810UB/1KE4 | ADS7810UB | ADS7808UB/1K | ADS7807PBG4 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 28-pin SOIC | 28-pin SOIC | 28-pin SOIC | 28-pin SOIC | 28-pin SOIC | 28-pin SOIC |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits | 16 bits |
| Input Voltage Range | ±10 V | ±10 V | ±10 V | ±10 V | ±10 V | ±10 V |
| Data Interface | Parallel | Parallel | Parallel | Parallel | Parallel | Parallel |
| Internal Reference | Yes | Yes | Yes | Yes | Yes | Yes |
关键差异点
- Highest sampling rate in the 28-SOIC, 12-bit TI SAR ADC portfolio （对比 ADS7808UB/1K)
- True bipolar ±10 V input range without external level shifters （对比 ADS7807PBG4)
- Parallel data interface with read latches for low-latency FPGA capture （对比 ADS7813UB/1K)
设计说明
Place the analog input filter capacitor and reference decoupling capacitor as close as possible to the ADS7810UB/1K pins. Use a ground plane that splits between AGND (pin 2) and DGND (pin 9) joined at a single point near the IC. Keep digital parallel output traces short and routed away from the analog input pin (pin 3) to minimize digital-to-analog crosstalk on the order of tens of millivolts.
Drive the analog input with a low-impedance op-amp buffer capable of settling to 12-bit accuracy within 1 µs. The SAR architecture requires the input signal to settle within the acquisition window; insufficient bandwidth or slew-rate on the input amplifier will degrade SINAD. According to TI's ADS7810 datasheet, the input S&H acquires in ~200 ns, so choose an op-amp with at least 5 MHz GBP and 10 V/µs slew rate for ±10 V input swings.
Decouple VCC (pin 26), VD+ (pin 27), and VD- (pin 28) with separate 10 µF tantalum and 0.1 µF ceramic capacitors placed within 5 mm of each supply pin. The ADS7810UB/1K draws analog and digital supply currents simultaneously during conversion, and inadequate decoupling will inject noise into the reference and degrade DNL performance by 1-2 counts. Place a ferrite bead between VD+ and VCC if power-rail noise from upstream switching regulators is present.
Do not leave the CONVST (pin 5) input floating - the ADS7810UB/1K may free-run or enter an indeterminate state. Tie CONVST to the system conversion timing logic or a controlled logic low during reset. Similarly, the RANGE (pin 4) and TAG (pin 22) inputs must be tied to a defined logic level (VCC or DGND) per the datasheet configuration table to set the input range and tag-bit polarity. Floating control pins is the most common ADS7810UB/1K bring-up failure.
合规信息
RoHS compliant per TI product page. Industrial temperature grade (-40 °C to +85 °C). Not AEC-Q100 qualified - select a Q1-graded SAR ADC for automotive. Halogen-free status not specified in provided data.
