ADC Single SAR 3Msps 14-bit Parallel 48-Pin TQFP T/R, ADS7891IPFBR, Texas Instruments

The ADS7891 is a 14-bit 3-MSPS A-to-D converter with 2.5-V internal reference. The device includes acapacitor based SAR A/D converter with inherent sample and hold. The device offers a 14-bit parallel interfacewith an additional byte mode that provides easy interface with 8-bit processors. The device has apseudo-differential input stage. The –IN swing of ±200 mV is useful to compensate for ground voltage mismatch between the ADC and sensorand also to cancel common-mode noise. With nap mode enabled, the device operates at lower power whenused at lower conversion rates. The device is available in a 48-pin TQFP package.

3 MHz Sample Rate, 14-Bit Resolution

Zero Latency

Unipolar, Pseudo Differential Input, Range:

0 V to 2.5 V

High Speed Parallel Interface

78 dB SNR and 88.5 dB THD at 3 MSPS

Power Dissipation 85 mW at 3 MSPS

Nap Mode (10 mW Power Dissipation)

Power Down (10 µW)

Internal Reference

Internal Reference Buffer

8-/14-Bit Bus Transfer

48-Pin TQFP Package

APPLICATIONS

Optical Networking (DWDM, MEMS Based Switching)
Spectrum Analyzers
High Speed Data Acquisition Systems
High Speed Close-Loop Systems
Telecommunication
Ultra-Sound Detection

Характеристики

Volt_supply_source	Single
Country_of_origin	Taiwan
Sampling_rate	3 Msps
Volt_reference	External, Internal
Digital_supply_support	No
Architecture	SAR
Resolution	14 Bit
Typical_power_dissipation	85 mW
Differential_nonlinearity	-1, 1.5 LSB
Signal_to_noise_ratio	78.5 dB
Input_type	Voltage
Input_signal_type	Differential, Pseudo-Differential
Input_volt	2.5 V
Бренд	Texas Instruments
Msl_level	2
Number_of_analog_inputs	1
Htsn	8542390001
Eccn	EAR99
Lead_finish	Gold
Max_power_dissipation	90 mW
Max_processing_temp	260
Mounting	Surface Mount
Operating_temp	-40 to 85 °C
Pin_count	48
Product_dimensions	7 x 7 x 1 mm
Schedule_b	8542390000
Specifications	http://www.ti.com/general/docs/lit/getliterature.tsp?genericPartNumber=ADS7891&&fileType=pdf
Supplier_package	TQFP
Polarity_of_input_volt	Unipolar
Operating_supply_volt	4.75, 5 V, 5.25
Number_of_adcs	1
Digital_interface_type	Parallel

SKU: ADS7891IPFBR

Description