AD7989-5 Series

18-Bit, 100 kSPS PulSAR ADCs in MSOP/LFCSP

Catalog

18-Bit, 100 kSPS PulSAR ADCs in MSOP/LFCSP

Part	Operating Temperature [Max]	Operating Temperature [Min]	Configuration	Voltage - Supply, Digital [Min]	Voltage - Supply, Digital [Max]	Package / Case	Package / Case [x]	Package / Case [x]	Mounting Type	Architecture	Voltage - Supply, Analog [Max]	Voltage - Supply, Analog [Min]	Supplier Device Package	Sampling Rate (Per Second)	Ratio - S/H:ADC	Reference Type	Number of A/D Converters	Number of Inputs	Data Interface	Input Type
Analog Devices AD7989-5BRMZ	85 °C	-40 °C	S/H-ADC	2.375 V	2.625 V	10-MSOP 10-TFSOP	3 mm	0.118 in	Surface Mount	SAR	2.625 V	2.375 V	10-MSOP	500k	1:1	External	1	1	DSP SPI	Differential
Analog Devices AD7989-1BCPZ-R2	85 °C	-40 °C	S/H-ADC	2.375 V	2.625 V	10-VFDFN Exposed Pad CSP			Surface Mount	SAR	2.625 V	2.375 V	10-LFCSP-WD (3x3)	100k	1:1	External	1	1	DSP SPI	Differential
Analog Devices AD7989-5BCPZ-RL7	85 °C	-40 °C	S/H-ADC	2.375 V	2.625 V	10-VFDFN Exposed Pad CSP			Surface Mount	SAR	2.625 V	2.375 V	10-LFCSP-WD (3x3)	500k	1:1	External	1	1	DSP SPI	Differential
Analog Devices AD7989-1BRMZ-RL7	85 °C	-40 °C	S/H-ADC	2.375 V	2.625 V	10-MSOP 10-TFSOP	3 mm	0.118 in	Surface Mount	SAR	2.625 V	2.375 V	10-MSOP	100k	1:1	External	1	1	DSP SPI	Differential

Catalog

18-Bit, 100 kSPS PulSAR ADCs in MSOP/LFCSP

Key Features

• High performanceTrue differential analog input voltage range: ±VREF0 V to VREFwith VREFbetween 2.4 V and 5.1 VThroughput: 500 kSPS/100 kSPS optionsZero latency architecture18-bit resolution with no missing codesINL: ±1 LSB typical, ±2 LSB maximumDynamic range: 99 dB at VREF= 5 VSNR: 98 dB at fIN= 1 kHz, VREF= 5 VTHD: −119 dB at fIN= 1 kHz, VREF= 5 VSINAD: 97 dB at fIN= 1 kHz, VREF= 5 V

• True differential analog input voltage range: ±VREF0 V to VREFwith VREFbetween 2.4 V and 5.1 V

• 0 V to VREFwith VREFbetween 2.4 V and 5.1 V

• Throughput: 500 kSPS/100 kSPS optionsZero latency architecture

• Zero latency architecture

• 18-bit resolution with no missing codes

• INL: ±1 LSB typical, ±2 LSB maximum

• Dynamic range: 99 dB at VREF= 5 V

• SNR: 98 dB at fIN= 1 kHz, VREF= 5 V

• THD: −119 dB at fIN= 1 kHz, VREF= 5 V

• SINAD: 97 dB at fIN= 1 kHz, VREF= 5 V

• Low power dissipationSingle-supply 2.5 V operation with 1.8 V, 2.5 V, 3 V, and 5 V logic interface400 μW at 100 kSPS (VDD only)700 μW at 100 kSPS (total)70 μW at 10 kSPS

• Single-supply 2.5 V operation with 1.8 V, 2.5 V, 3 V, and 5 V logic interface

• 400 μW at 100 kSPS (VDD only)700 μW at 100 kSPS (total)

• 70 μW at 10 kSPS

• Proprietary serial interface SPI-/QSPI™-/MICROWIRE™-/DSP-compatible

• 10-lead MSOP and 3 mm × 3 mm 10-Lead LFCSP

• Wide operating temperature range: −40°C to +85°C

Description

TheAD7989-1/AD7989-5 are 18-bit, successive approximation, analog-to-digital converters (ADCs) that operate from a single power supply, VDD. The AD7989-1/AD7989-5 contain a low power, high speed, 18-bit sampling ADC and a versatile serial interface port. On the CNV rising edge, the AD7989-1/AD7989-5 sample the voltage difference between the IN+ and IN− pins. The voltages on these pins typically swing in opposite phases between 0 V and VREF. The reference voltage, VREF, is applied externally and can be set independent of the supply voltage, VDD. Its power scales linearly with throughput.The AD7989-1/AD7989-5 are serial peripheral interface (SPI)-compatible, which features the ability, using the SDI/CSinput, to daisy-chain several ADCs on a single 3-wire bus. The AD7989-1/AD7989-5 are compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic, using the separate VIO supply.The AD7989-1/AD7989-5 are available in a 10-lead MSOP or a 10-lead LFCSP with operation specified from −40°C to +85°C.ApplicationsAutomated test equipmentData acquisition systemsMedical instrumentsMachine automation