AD7621 Series

16-Bit, 2 LSB INL, 3 MSPS PulSAR®ADC

Catalog

16-Bit, 2 LSB INL, 3 MSPS PulSAR®ADC

Part	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Data Interface	Number of Inputs	Architecture	Number of Bits	Ratio - S/H:ADC	Number of A/D Converters	Mounting Type	Reference Type	Voltage - Supply, Analog [Max]	Voltage - Supply, Analog [Min]	Supplier Device Package	Input Type	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Configuration	Sampling Rate (Per Second)	Sampling Rate (Per Second)	Supplied Contents	Input Range	Utilized IC / Part	Power (Typ) @ Conditions
Analog Devices AD7621ACPZ	2.63 V	2.37 V	DSP Parallel SPI	1	SAR	16	1:1	1	Surface Mount	External Internal	2.63 V	2.37 V	48-LFCSP-VQ (7x7)	Differential	85 °C	-40 °C	48-VFQFN Exposed Pad CSP	S/H-ADC	3 M
Analog Devices AD7621ASTZ	2.63 V	2.37 V	DSP Parallel SPI	1	SAR	16	1:1	1	Surface Mount	External Internal	2.63 V	2.37 V	48-LQFP (7x7)	Differential	85 °C	-40 °C	48-LQFP	S/H-ADC	3 M
Analog Devices EVAL-AD7621EDZ			Parallel Serial			16		1												2M	Board(s)	2.5 V	AD7621	65 mW
Analog Devices AD7621ACPZRL	2.63 V	2.37 V	DSP Parallel SPI	1	SAR	16	1:1	1	Surface Mount	External Internal	2.63 V	2.37 V	48-LFCSP-VQ (7x7)	Differential	85 °C	-40 °C	48-VFQFN Exposed Pad CSP	S/H-ADC	3 M
Analog Devices AD7621ASTZRL	2.63 V	2.37 V	DSP Parallel SPI	1	SAR	16	1:1	1	Surface Mount	External Internal	2.63 V	2.37 V	48-LQFP (7x7)	Differential	85 °C	-40 °C	48-LQFP	S/H-ADC	3 M
Analog Devices EVAL-AD7621CBZ			Parallel Serial			16		1												2M	Board(s)	2.5 V	AD7621	65 mW

Catalog

16-Bit, 2 LSB INL, 3 MSPS PulSAR®ADC

Key Features

• 16 Bits Resolution with No Missing Codes

• On-board Low Drift Reference with Buffer and Temperature Sensor

• Differential Input Range: ±VREF(VREFup to 2.5V)

• Throughput:3 MSPS (Wideband Warp and Warp Mode)2 MSPS (Normal Mode)1.25 MSPS (Impulse Mode)

• INL ±2 LSB Max (±30 ppm of FS)

• SINAD: 89 dB Typ @ 100 kHz

• THD: -103 dB Typ @ 100 kHz

• Parallel (16 or 8 bits bus) and Serial 5 V/3.3 V/2.5 V Interface

• SPI®/QSPI™/MICROWIRE™/DSP Compatible

• No Pipeline Delay ( SAR architecture )

• Single 2.5 V Supply Operation

• Power Dissipation: 70 mW Typ @ 3 MSPS With REF

Description

The AD7621 is a 16-bit, 3 MSPS, charge redistribution SAR, fully differential analog-to-digital converter that operates from a single 2.5 V power supply. The part contains a high-speed 16-bit sampling ADC, an internal conversion clock, an internal reference buffer, error correction circuits, and both serial and parallel system interface ports. It features a very high sampling rate mode (Wideband Warp) for undersampling applications and, for asynchronous conversion rate applications, a fast mode (Normal) and, for low power applications, a reduced power mode (Impulse) where the power is scaled with the throughput. Operation is specified from −40°C to +85°C.It is available in a 48-lead LQFP or a 48-lead LFCSP with operation specified from –40°C to +85°C.PRODUCT HIGHLIGHTSFast Throughput.The AD7621 is a 3 MSPS, charge redistribution, 16-bit SAR ADC.Superior Linearity.The AD7621 has no missing 16-bit code.Internal Reference.The AD7621 has a 2.048 V internal reference with a typical drift of ±7 ppm/°C.Single-Supply Operation.The AD7621 operates from a 2.5 V single supply and typically dissipates 65 mW. In impulse mode, its power dissipation decreases with the throughput.Serial or Parallel Interface.Versatile parallel (16- or 8-bit bus) or 2-wire serial interface arrangement compatible with 2.5 V, 3.3 V, or 5 V logic.APPLICATIONSMedical instrumentsHigh speed data acquisitionDigital signal processingCommunicationsInstrumentationSpectrum analysisATE