PGA308-Q1 Texas instruments

PGA308-Q1

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PGA308-Q1

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Описание

The PGA308-Q1 is a programmable analog sensor signal conditioner. The analog signal path amplifies the sensor signal and provides digital calibration for offset and gain. Calibration is done via the 1W pin, a digital One-Wire, UART-compatible interface. For three-terminal sensor modules, 1W may be connected to VOUT and the assembly programmed through the VOUT pin. Gain and offset calibration parameters are stored onboard in seven banks of one-time programmable (OTP) memory. The power-on reset (POR) OTP bank may be programmed a total of four times. The all-analog signal path contains a 2×2 input multiplexer (mux) to allow electronic sensor lead swapping, a coarse offset adjust, an auto-zero programmable gain instrumentation amplifier (PGA), a fine gain adjust, a fine offset adjust, and a programmable gain output amplifier. Fault monitor circuitry detects and signals sensor burnout, overload, and system fault conditions. Over/under-scale limits provide additional means for system level diagnostics. The dual-use DOUT/VCLAMP pin can be used as a programmable digital output or as a VOUT over-voltage clamp. For detailed application information, see the PGA308 User's Guide (SBOU069) available for download at www.ti.com.

Qualified for Automotive Applications
AEC-Q100 Qualified with the following results
- Device Temperature Grade 1: -40°C to +125°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level H2
- Device CDM ESD Classification Level C3B
Digital Calibration for Bridge Sensors
Offset Select: Coarse and Fine
Gain Select: Coarse and Fine
Bridge Fault Monitor
Input Mux for Lead Swap
Over/Under Scale Limits
D_OUT/ V_OUT Clamp Function
Seven Banks OTP Memory
One-Wire Digital UART Interface
Operating Voltage: +2.7V to +5.5V
MSOP-10 and 3mm × 4mm DFN-10 Packages

PGA/VGA	PGA
Number of channels	2
Vs (max) (V)	5.5
Vs (min) (V)	2.7
Slew rate (typ) (V/µs)	0.6
Operating temperature range (°C)	-40 to 125
Rating	Automotive