ADS8568 16-Bit 8-Channel Simultaneous-Sampling Bipolar-Input SAR ADC

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.

Features

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

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Parametrics Compare all products in Precision ADCs (<=10MSPS)


Resolution (Bits)
Sample Rate (Max) (kSPS)
Number of input channels
Interface
Operating temperature range (C)
Package Group
Approx. price (US$)
Power consumption (Typ) (mW)
Package size: mm2:W x L (PKG)
Architecture
Input type
Multi-channel configuration
Reference mode
Features
Input range (Max) (V)
Input range (Min) (V)
Analog voltage AVDD (Min) (V)
Analog voltage AVDD (Max) (V)
Digital supply (Min) (V)
Digital supply (Max) (V)
INL (Max) (+/-LSB)
SINAD (dB)
SNR (dB)
THD (Typ) (dB)
Rating

ADS8568	ADS8528	ADS8548	ADS8584S	ADS8588H	ADS8588S
16	12	14	16	16	16
500	650	600	330	500	200
8	8	8	4	8	8
Parallel SPI	Parallel SPI	Parallel SPI	Byte-Wide Parallel SPI	Byte-Wide Parallel SPI	Byte-Wide Parallel SPI
-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125
LQFP \| 64 VQFN \| 64	LQFP \| 64 VQFN \| 64	LQFP \| 64 VQFN \| 64	LQFP \| 64	LQFP \| 64	LQFP \| 64
11.75 \| 1ku	4.75 \| 1ku	10.00 \| 1ku	8.00 \| 1ku	15.00 \| 1ku	13.00 \| 1ku
335	335	335	54.5	88.5	88.5
64LQFP: 144 mm2: 12 x 12 (LQFP \| 64) 64VQFN: 81 mm2: 9 x 9 (VQFN \| 64)	64LQFP: 144 mm2: 12 x 12 (LQFP \| 64) 64VQFN: 81 mm2: 9 x 9 (VQFN \| 64)	64LQFP: 144 mm2: 12 x 12 (LQFP \| 64) 64VQFN: 81 mm2: 9 x 9 (VQFN \| 64)	64LQFP: 144 mm2: 12 x 12 (LQFP \| 64)	64LQFP: 144 mm2: 12 x 12 (LQFP \| 64)	64LQFP: 144 mm2: 12 x 12 (LQFP \| 64)
SAR	SAR	SAR	SAR	SAR	SAR
Single-Ended	Single-Ended	Single-Ended	Single-Ended	Single-Ended	Single-Ended
Simultaneous Sampling	Simultaneous Sampling	Simultaneous Sampling	Simultaneous Sampling	Simultaneous Sampling	Simultaneous Sampling
Ext Int	Ext Int	Ext Int	Ext Int	Ext Int	Ext Int
Daisy-Chainable Oscillator	Daisy-Chainable Oscillator	Daisy-Chainable Oscillator	Oscillator Over-Voltage Protection PGA	Oscillator Over-Voltage Protection PGA	Oscillator Over-Voltage Protection PGA
12	12	12	10	10	10
-12	-12	-12	-10	-10	-10
4.5	4.5	4.5	4.75	4.75	4.75
5.5	5.5	5.5	5.25	5.25	5.25
2.7

ADS8568 (ACTIVE)

16-Bit 8-Channel Simultaneous-Sampling Bipolar-Input SAR ADC

Description

Features

Parametrics Compare all products in Precision ADCs (<=10MSPS)