1 Features

• Small solution size:

– DSBGA and WQFN (preview) packages

– Space-saving, capless, 2.5-V internal reference

• 8 channels configurable as any combination of:

– Up to 8 analog inputs, digital inputs, or digital

outputs

• Programmable averaging filters:

– Programmable sample size for averaging

– Averaging with internal conversions

– 20-bit resolution for average output

• Low-leakage multiplexer with channel sequencer:

– Manual mode, on-the-fly mode, and autosequence

mode

• Excellent AC and DC performance:

– SNR: 91.9 dB, THD: –100 dB

– Improved SNR with programmable averaging

filters

– INL: ±1 LSB, 16-bit no missing codes

– Internal calibration improves offset and drift

– 250 kSPS sample rate with no latency

• Wide operating range:

– ADC input range: 0 V to VREF and 2 × VREF

– Analog supply: 3 V to 5.5 V

– Digital supply: 1.65 V to 5.5 V

– Temperature range: –40°C to +125°C

• Enhanced-SPI digital interface:

– High-speed, 60-MHz SPI

2 Applications

• Optical modules

• Optical line cards

• Multiparameter patient monitors

3 Description

The ADS7066 is a small, 16-bit, 8-channel, highprecision

successive-approximation register (SAR)

analog-to-digital converter (ADC). The ADS7066 has

an integrated capless reference and a reference

buffer that helps reduce the overall solution size

by requiring fewer external components. The device

family includes the ADS7067 (800 kSPS) and the

ADS7066 (250 kSPS) speed variants.

The ADS7066 features built-in offset calibration for

improved accuracy over wide operating conditions

of the system. The programmable averaging filters

enable higher resolution measurement. The eight

channels of the ADS7066 can be individually

configured as analog inputs, digital inputs, or digital

outputs that simplify circuit design for mixed signal

feedback and digital control.

The enhanced-SPI enables the ADS7066 in achieving

high throughput at lower clock speeds, thereby

simplifying the board layout and lowering system cost.

The ADS7066 features a cyclic redundancy check

(CRC) for data read and write operations and the

power-up configuration.

ADS7066IYBHT属于集成电路（IC） > 模数转换器（ADC）。美国德州仪器公司制造生产的ADS7066IYBHT模数转换器（ADC）模数转换器（ADC、A/D 或 A 转 D）对模拟信号进行采样，例如由麦克风采集的声音或传感器的输出，然后将其转换为数字信号。一般来说，数字输出是二进制补码二进制数，与输入成比例。输入类型可能是差分、伪差分或单端输入。模数转换器可按照位数、采样率、输入数、接口、转换器数和架构（例如自适应增量、双斜率、折叠、流水线、SAR、三角积分、两步式）进行选择。