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.