ADS7067集成電路（IC）的模數(shù)轉(zhuǎn)換器（ADC）規(guī)格書(shū)PDF中文資料

1 Features

? Package options:

– 1.636mm × 1.636mm DSBGA and 3mm × 3mm

WQFN

– Space-saving, capless, 2.5V 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

– Auto-sequence mode

? Excellent AC and DC performance:

– SNR: 90dB, THD: –100dB

– Improved SNR with programmable averaging

filters

– INL: ±1LSB, 16-bit no missing codes

– Internal calibration improves offset and drift

– High sample rate with no latency output:

800kSPS

? Wide operating range:

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

– Analog supply: 3V to 5.5V

– Digital supply: 1.65V to 5.5V

– Temperature range: –40°C to +125°C

? Enhanced-SPI digital interface:

– High-speed, 60MHz SPI interface

2 Applications

? Optical modules

? Optical line cards

? Multiparameter patient monitors

3 Description

The ADS7067 is a small, 16-bit, 8-channel, highprecision

successive-approximation register (SAR)

analog-to-digital converter (ADC). The ADS7067 has

an integrated capless reference and a reference

buffer that helps reduce the overall solution size by

requiring fewer external components. The wafer-levelchip-

scale package and fewer external components

make this device designed for space-constrained

applications. The device family includes the ADS7067

(800kSPS) and the ADS7066 (250kSPS) speed

variants.

The ADS7067 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 ADS7067 can be individually

configured as analog inputs, digital inputs, or digital

outputs that enable smaller system size and simplify

circuit design for mixed signal feedback and digital

control.

The enhanced-SPI enables the ADS7067 in achieving

high throughput at lower clock speeds, thereby

simplifying the board layout and lowering system cost.

The ADS7067 features a cyclic redundancy check

(CRC) for data read and write operations and the

power-up configuration.