PGA460-Q1 Datasheet, PDF (6/112 Pages) Texas Instruments – Automotive Ultrasonic Signal Processor and Transducer Driver

PGA460-Q1
SLASEC8 – FEBRUARY 2017
6.7 Transducer Receiver Characteristics
PARAMETER
GAIN_{RNG_TOT_RCV}
Total receiver amplification gain
range
GAIN_{RNG_RCV}
GAIN_{NSTEP_RCV}
GAIN_{STEP_SIZE_RCV}
GAIN_{THRM_DRFT_RCV}
Z_{INP_RCV}
N_RCV
Receiver amplification gain
Gain adjustment steps
Gain adjustment step size
Gain thermal drift
Input impedance
Noise floor
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TEST CONDITIONS
MIN
F_SW = F_{SW_LOW},F_{SW_HIGH};
T_A = -40°C to +105°C
32
AFE_GAIN_RNG = 0x03
32
AFE_GAIN_RNG = 0x02
46
AFE_GAIN_RNG = 0x01
52
AFE_GAIN_RNG = 0x00
58
F_SW = 30kHz; T_A = -40°C
to +105°C; Gain = 58.5dB
F_SW < 80kHz
F_SW = 58kHz; T_A = 105°C;
BW = 4kHz
0.2
-3.5%
300
TYP MAX
UNIT
90
64
78
dB
84
90
64
0.5
0.8
dB
3.5%
kΩ
7
nV/sqrt(Hz)
6.8 Analog to Digital Converter Characteristics
PARAMETER
TEST CONDITIONS
V_{INP_ADC}
V_{REF_ADC}
N_ADC
t_CONV
Input voltage range
Voltage reference
Resolution
Conversion time
MIN
0
TYP
V_AVDD
12
1
MAX
V_AVDD
UNIT
V
Bits
µs
6.9 Digital Signal Processing Characteristics
PARAMETER
FREQ_{CENTER_BPF}
BW_BPF
N_BPF
FREQ_{STEP_SIZE_BPF}
FREQ_{CUTOFF_LPF}
N_LPF
FREQ_{STEP_SIZE_LPF}
Band-pass filter center frequency
Band-pass filter band width
Band-pass filter adjustable steps
Band-pass filter step size
Low-pass filter cutoff frequency
Low-pass filter adjustable steps
Low-pass filter step size
TEST CONDITIONS
Normalized to driver
frequency
6.10 Temperature Sensor Characteristics
PARAMETER
T_{RANGE_SENSE}
Temperature sensor range
T_{ACC_SENSE}
Range accuracy
TEST CONDITIONS
VPWR=12V;TEMP_GAI
N = 0; TEMP_OFF = 0
MIN
TYP MAX
UNIT
1
2
8
kHz
4
2
kHz
1
4
kHz
4
1
kHz
MIN
TYP MAX
UNIT
-40
125
°C
5
°C
6.11 High-Voltage I/O Characteristics
PARAMETER
TEST CONDITIONS
V_{IH_IO}
High-voltage IO input high level
IO pin
V_{IL_IO}
High-voltage IO input low level
IO pin
V_{HYS_IO}
V_{OL_IO}
R_{PU_IO}
I_{LIM_IO}
High-voltage input hysteresis
High-voltage IO output low level
High-voltage IO pullup resistance
Current limit on high-voltage IO
IO pin
IO pin ; I_IO = 10mA
IO pin
Short to VPWR
MIN
0.6 *
V_VPWR
0.05 *
VPWR
4
40
TYP MAX
0.4 *
V_VPWR
0.175 *
VPWR
2
10
16
250
UNIT
V
V
V
V
kΩ
mA
6
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