ADC Single SAR 52ksps 12-bit Serial 28-Pin SSOP Tube, ADS7870EA, Texas Instruments

The ADS7870 (US patents 6140872, 6060874) is a complete low-power data acquisition system on a single chip. It consists of a 4-channel differential/8-channel single-ended multiplexer, precision programmable gain amplifier, 12-bit successive approximation analog-to-digital (A/D) converter, and a precision voltage reference.The programmable-gain amplifier provides high input impedance, excellent gain accuracy, good common-mode rejection, and low noise. For many low-level signals, no external amplification or impedance buffering is needed between the signal source and the A/D input. The offset voltage of the PGA is auto zeroed. Gains of 1, 2, 4, 5, 8, 10, 16, and 20 V/V allow signals as low as 125 mV to produce full-scale digital outputs.The ADS7870 contains an internal reference, which is trimmed for high initial accuracy and stability vs temperature. Drift is typically 10 ppm/°C. An external reference can be used in situations where multiple ADS7870s share a common reference. The serial interface allows the use of SPI, QSPI, Microwire, and 8051-family protocols, without glue logic.

PGA Gains: 1, 2, 4, 5, 8, 10, 16, 20V/V

Programmable Input (Up to 4-channel Differential/Up to 8-channel Single-Ended or Some Combination)

1.15-V, 2.048-V or 2.5-V Internal Reference

SPI/DSP Compatible Serial Interface (=20 MHz)

Throughput Rate: 52 kSamples/sec

Error/Overload Indicator

Programmable Output 2s Complement/Binary

2.7-V to 5.5-V Single-Supply Operation

4-Bit Digital I/O Via Serial Interface

Pin Compatible With ADS7871

SSOP-28 Package

APPLICATIONS

Portable Battery-Powered Systems
Low-Power Instrumentation
Low-Power Control Systems
Smart Sensor Applications

Характеристики

Volt_supply_source	Single
Number_of_analog_inputs	8, 4
Sampling_rate	52 ksps
Volt_reference	External, Internal
Digital_supply_support	No
Architecture	SAR
Resolution	12 Bit
Typical_power_dissipation	6 mW
Differential_nonlinearity	0.5 LSB
Input_type	Voltage
Input_signal_type	Differential, Single-Ended
Input_volt	5.7 V
Бренд	Texas Instruments
Msl_level	1
Country_of_origin	Malaysia
Eccn	EAR99
Htsn	8542390001
Lead_finish	Gold
Max_power_dissipation	8.5 mW
Max_processing_temp	260
Mounting	Surface Mount
Operating_temp	-40 to 85 °C
Pin_count	28
Product_dimensions	10.2 x 5.3 x 1.95 mm
Schedule_b	8542390000
Specifications	http://www.ti.com/general/docs/lit/getliterature.tsp?genericPartNumber=ADS7870&&fileType=pdf
Supplier_package	SSOP
Polarity_of_input_volt	Unipolar
Operating_supply_volt	2.7, 5 V, 5.5
Number_of_adcs	1
Digital_interface_type	Serial (2-Wire, 3-Wire, SPI, QSPI, Microwire)

Артикул: ADS7870EA

Описание