maxq7667 Maxim Integrated Products, Inc., maxq7667 Datasheet - Page 2

• Manufacturer Part Number: maxq7667
• Description: 16-bit, Risc, Microcontroller-based, Ultrasonic Distance-measuring System
• Manufacturer: Maxim Integrated Products, Inc.

16-Bit, RISC, Microcontroller-Based,
Ultrasonic Distance-Measuring System
ABSOLUTE MAXIMUM RATINGS
DVDDIO, GATE5, REG3P3, REG2P5 to
AVDD to AGND .....................................................-0.3V to +4.0V
DVDD to DGND .....................................................-0.3V to +3.0V
DVDDIO to DVDD..................................................-0.3V to +6.0V
AVDD to DVDD......................................................-0.3V to +4.0V
AGND to DGND.....................................................-0.3V to +0.3V
Digital Inputs/Outputs to DGND..........-0.3V to (V
ELECTRICAL CHARACTERISTICS
(V
(f
otherwise specified. Typical values are at T
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
2
ECHO INPUT (Low-Noise Amplifier and Sigma-Delta ADC)
Input-Referred Noise
(Note 1)
Minimum Detectable Signal
Operating Input Range
Programmable Gain
Programmable-Gain Adjust
Resolution
LNA Bandwidth
ADC Sampling Rate
ADC Output Data Rate
ADC Output Data Resolution
Echo-Input Resistance
Echo-Input Capacitance
Echo-Input DC Bias Voltage
Maximum Overvoltage
Recovery Time
BPF
DVDDIO
DGND ................................................................-0.3V to +6.0V
_______________________________________________________________________________________
) = 50kHz, C
PARAMETER
= +5V, V
REFBG
AVDD
= C
= +3.3V; V
REF
= 1µF in parallel with 0.01µF, f
SYMBOL
R
DVDD
IN
= +2.5V, system clock (f
A
= +25°C.)
VGA gain adjust = 1.55µV
VGA gain adjust = 0.1µV
VGA gain adjust = 1.55µV
VGA gain adjust = 0.1µV
VGA gain adjust = 1.55µV
unclipped
VGA gain adjust = 0.1µV
unclipped
From echo input to
bandpass filter in
reply to input
(Note 2)
For each echo input
Recover from 2V
DVDDIO
+ 0.3V)
CONDITIONS
P-P
ADCCLK
input
VGA gain adjust
= 1.55µV
VGA gain adjust
= 0.1µV
SYSCLK
P-P
P-P
P-P
Analog Inputs/Outputs to AGND ............-0.3V to (V
XIN, XOUT to DGND ..............................-0.3V to (V
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (T
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
P-P
P-P
P-P
= 2MHz (SAR data rate = 125ksps), T
48-Pin LQFP (derate 21.7mW/°C above +70°C).....1739.1mW
/LSB
/LSB
/LSB,
P-P
) = 16MHz, burst frequency (f
/LSB
/LSB
/LSB,
P-P
/LSB
/LSB
MIN
80 x f
10 x f
V
AVDD
TYP
1.55
100
150
5.6
0.7
6.7
0.1
80
10
10
16
14
14
10
A
BPF
BPF
BURST
= +70°C)
/2
A
) = bandpass frequency
= T
MAX
MIN
to T
AVDD
DVDD
µV
MAX
UNITS
µV
mV
µV
P-P
kHz
kHz
kHz
Bits
k
pF
µs
+ 0.3V)
+ 0.3V)
%
, unless
RMS
V
P-P
P-P
/LSB