SM6661A Datasheet, PDF (6/14 Pages) Nippon Precision Circuits Inc – Post-amplifier for Gyroscope

SM6661A
Electrical Characteristics
DC Characteristics
V_CC = 3.3V, GND = 0V, Ta = 25°C, circuit constant is same as “TYPICAL APPLICATION CIRCUIT”, unless
otherwise noted.
Parameter
Symbol
Condition
Rating
Unit
min
typ
max
Current consumption 1
SLEEP = LOW, V_CC = 3.3V
I _CC1
SLEEP = LOW, V_CC = 3.6V
−
5.5
7.5
mA
–
7.0
9.0
mA
Current consumption 2
I_CC2 SLEEP = HIGH (sleep mode)
−
–
1.0
µA
High-level input voltage
Low-level input voltage
V _IH
SLEEP pin, V_CC = 3.0 to 3.6V,
V _IL
Ta = –20 to +80°C
High-level input leakage current^*1 I_LH SLEEP pin, 3.3V input voltage
Low-level input current^*1
I_LL SLEEP pin, 0.0V input voltage
2.0
–
–
V
–
–
0.8
V
–
–
± 1.0
µA
−38
−33
−28
µA
Input current (SLEEP = HIGH)^*1
I_LEAK
VSIG_IN1, VSIG_IN2, VREF_IN1, VREF_IN2
pins
–
–
± 0.1
mA
Input current (SLEEP = LOW)^*1
I_IN
VSIG_IN1, VSIG_IN2, VREF_IN1, VREF_IN2
pins, 1.35V input voltage
–0.2
–0.045
+0
mA
High-level output voltage
Low-level output voltage
Offset voltage^*2
VCC/2 pin voltage
V_OH
V_CC–0.3 V_CC–0.1
–
V
VSIG_OUT1, VSIG_OUT2 pins, R_L = 100kΩ
V_OL
–
0.1
0.3
V
V_OFFSET
VSIG_OUT1, VSIG_OUT2 pins,
potential difference from VCC/2 pin,
R₁ = 150kΩ, R₂ = 330kΩ
–
±5
± 20
mV
V_VCC/2 VCC/2 pin
V_CC/2–0.1 V_CC/2 V_CC/2+0.1
V
*1. Sink current is defined as positive value.
*2. R₁ and R₂ indicate the values of input resistor and feedback resistor for variable gain amplifier respectively. Refer to “TYPICAL APPLICATION
CIRCUIT”.
AC Characteristics
V_CC = 3.3V, GND = 0V, Ta = 25°C, circuit constant is same as “TYPICAL APPLICATION CIRCUIT”, unless
otherwise noted.
Parameter
Symbol
Condition
Rating
Unit
min
typ
max
30dB amplifier output gain
Output gain^*1
Input referred voltage noise^*2
Lower cutoff frequency^*1*3
Upper cutoff frequency^*1*4
Gain1
Gain2
V_NOISE
f_CL
f_CH
HPF1, HPF2 pins
VSIG_OUT1, VSIG_OUT2 pins,
At 1Hz
R₁ = 150kΩ, C₁ = 22µF
R₂ = 330kΩ, C₂ = 2200pF
29
30
31
dB
35.7
36.8
37.9
dB
–
0.05
–
µV_rms/√Hz
–
0.05
–
Hz
–
219
–
Hz
*1. As for these parameters, the characteristics are determined by external components, and the specifications are guaranteed by design and character-
istics evaluation. The rating values are shown without considering variability of external components.
*2. Input referred voltage noise is a design value when short-circuiting between VSIG_IN1 and VREF_IN1 pins, VSIG_IN2 and VREF_IN2 pins, without
inputting external signal.
*3. R₁ and C₁ indicate the values of input resistor and input capacitor for variable gain amplifier respectively. Refer to “TYPICAL APPLICATION CIRCUIT”.
*4. R₂ and C₂ indicate the values of feedback resistor and feedback capacitor for variable gain amplifier respectively. Refer to “TYPICAL APPLICATION
CIRCUIT”.
SEIKO NPC CORPORATION —6