1 Features

1• Family of 12-, 14-, and 16-Bit, Pin- and Software-

Compatible ADCs

• Maximum Data Rate per Channel:

– ADS8528: 650 kSPS (PAR) or

480 kSPS (SER)

– ADS8548: 600 kSPS (PAR) or

450 kSPS (SER)

– ADS8568: 510 kSPS (PAR) or

400 kSPS (SER)

• Excellent AC Performance:

– Signal-to-Noise Ratio:

ADS8528: 73.9 dB, ADS8548: 85 dB,

ADS8568: 91.5 dB

– Total Harmonic Distortion:

ADS8528: –89 dB, ADS8548: –91 dB,

ADS8568: –94 dB

• Programmable, Buffered Internal Reference:

0.5 V–2.5 V or 0.5 V–3.0 V Supports Input

Voltage Ranges up to ±12 V

• Selectable Parallel or Serial Interface

• Scalable Low-Power Operation Using Auto-Sleep

Mode: Only 32 mW at 10 kSPS

• Fully Specified Over Extended Industrial

Temperature Range

2 Applications

• Protection Relays

• Power Quality Measurement

• Multi-Axis Motor Controls

• Programmable Logic Controllers

• Industrial Data Acquisition

3 Description

The ADS85x8 contain eight low-power, 12-, 14-, or

16-bit, successive approximation register (SAR)-

based analog-to-digital converters (ADCs) with true

bipolar inputs. These channels are grouped in four

pairs, thus allowing simultaneous high-speed signal

acquisition of up to 650 kSPS.

The devices support selectable parallel or serial

interface with daisy-chain capability. The

programmable reference allows handling of analog

input signals with amplitudes up to ±12 V.

The ADS85x8 family supports an auto-sleep mode for

minimum power dissipation and is available in both

64-pin VQFN and LQFP packages. The entire family

is specified over a temperature range of –40°C to

+125°C.