AK5806 Datasheet, PDF (1/18 Pages) Asahi Kasei Microsystems – Multi Core DSP with SRC

[AK5806]
AK5806
8ch Analog Front End IC
1. General description
The AK5806 is an 8 channels analog baseband IC with third order HPF, whose cutoff frequency is
variable, and programmable gain amplifiers.
It is capable of adjusting the baseband signal gain and the frequency band widely.
2. Features
- Signal Processing: 8-channel Differential I/O
- Signal band width: up to 5MHz
- Programmable Gain Amplifier:
(Coarse) 0dB to 42dB, 6dB/step (Fine) −6dB to +5.625dB, 0.375dB/step
- 3rd-order HPF with Adjustable Cutoff Frequency: 25 kHz to 1MHz
- Offset Cancelling Function
- Operational Temperature: −40 to 125ºC
- Package: 64-pins HTQFP
3. Application
- Millimeter wave radar
- Laser rangefinder
- Ultrasonic sensor
- Signal conditioning before AD conversion
etc.
4. Block diagram
VDD
AIN1P
AIN1N
PGA1
AINnP
AINnN
HPF
&
Buffer
Ch.2 to Ch.8
PGA2
&
Fine gain
Offset
calibration
Output buffer
AOUT1P
AOUT1N
AOUTnP
AOUTnN
VCOM
IREF
Voltage
reference
016011439-E-00
Reset control
Diagnostic
function
VSS
Figure 1
-1-
SPI control
CSN
CCLK
CDTI
CDTO
RSTN
2016/09