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PDF SM6661A Data sheet ( Hoja de datos )
| Número de pieza | SM6661A | |
| Descripción | Post-amplifier | |
| Fabricantes | NPC | |
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SM6661A
Post-amplifier for Gyroscope
OVERVIEW
The SM6661A is a post-amplifier for use in combination with gyroscope ICs. The SM6661A has a built-in 2-
system post-amplifier, so that it can amplify two output signals of gyroscope IC with a single SM6661A. It
features a simple method to change the different image stabilizing gain and frequency characteristics
depending on the models. It also has a built-in sleep function making it easy to connect the output signal of
gyroscope IC to A/D converter.
FEATURES
I Supply voltage range: 3.0 to 3.6V
I Operating ambient temperature range: −20 to +80°C
I 2-system input and output (reverse phase output)
I Corresponds to 2-axis of gyroscope output
I Adjustable output gain and frequency characteris-
tics by external components
I Output gain: 30 to 50dB
(variable amplification control)
I Zero-rate voltage compensation function for sim-
ple interface to A/D converter connected to subse-
quent stage
I Sleep function built-in
I Small package: 16-pin QFN
PINOUT
(Top view)
VCC
SLEEP
VSIG_OUT1
GAIN1
VSIG_IN2
VREF_IN2
VCC/2
GND
APPLICATIONS
I DVC
I DSC
ORDERING INFORMATION
Device
SM6661AB
Package
16-pin QFN
PACKAGE DIMENSIONS
(Unit: mm)
Weight: 9mg
Top view
2.50 ± 0.05
Bottom view
1.30 ± 0.05
16
1
0.40 ± 0.05
0.325 ± 0.05
0.05 0.40
16
1 C0.05
0.18 ± 0.05
0.08 ± 0.05
0.05 M
SEIKO NPC CORPORATION —1
1 page  
SM6661A
SPECIFICATIONS
Absolute Maximum Ratings
GND = 0V
Parameter
Pin Symbol
Rating
Supply voltage
Input voltage
VCC
VREF_IN1, VREF_IN2, VSIG_IN1,
VSIG_IN2, HPF1, HPF2, GAIN1,
GAIN2, SLEEP
VCC
VIN
5.0
VCC + 0.3 to GND – 0.3
Storage temperature range
Power dissipation*1
Junction temperature
TSTG
PD
TJMAX
− 40 to +125
0.7
+125
*1. When mounted on a NPC’s standard board (76.2mm × 114.3mm, 1.6mm thickness, FR-4 glass-epoxy board).
Thermal resistance θja = 64°C/W
Recommended Operating Conditions
GND = 0V
Parameter
Pin Symbol
Supply voltage
VCC
SLEEP pin applied voltage
SLEEP
Operating ambient temperature
Reference input voltage
Signal input amplitude*1
VREF_IN1, VREF_IN2, VSIG_IN1,
VSIG_IN2
VSIG_IN1, VSIG_IN2
Output gain variable range
VSIG_OUT1, VSIG_OUT2
Variable gain amplifier feedback
resistance
Output load resistance
VSIG_OUT1, VSIG_OUT2
*1. When VCC = 3.0V, 30dB output gain setting
VCC
VSLEEP
Ta
VREF_IN
VSIG_IN_AC
GRANGE
R2
RL
min
3.0
0
–20
1.25
–
30
27
50
Rating
typ
3.3
–
25
1.35
–
–
–
–
max
3.6
VCC
80
2.10
47
50
330
–
Unit
V
V
°C
W
°C
Unit
V
V
°C
V
mVpp
dB
kΩ
kΩ
SEIKO NPC CORPORATION —5
5 Page 
SM6661A
40
35
30
25
0.01
0.1 1 10 100
Frequency [Hz]
1000
Figure 4. Output gain vs. Frequency
39.0
38.0
37.0
36.0
35.0
−40 −20 0
20 40 60 80 100
Ta [°C]
Figure 5. Output gain vs. Ambient temperature
(at 10Hz input frequency)
60
[A]
50
40 [B]
[C]
30
20
0.01
0.1 1 10
Frequency [Hz]
100
Figure 6. Output gain vs. Frequency
(when changing output gain setting*1)
*1. Each setting is measured without connecting feedback capacitor C2 for variable gain amplifier, high-frequency bandwidth is not limited.
Output gain setting of each characteristics are shown below;
[A]: 50.0 dB setting (R1 = 33kΩ, R2 = 330kΩ)
[B]: 36.8 dB setting (R1 = 150kΩ, R2 = 330kΩ)
[C]: 30.0 dB setting (R1 = 330kΩ, R2 = 330kΩ)
SEIKO NPC CORPORATION —11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet SM6661A.PDF ] | |
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