IDG-650 INVENSENSE, IDG-650 Datasheet - Page 13

• Manufacturer Part Number: IDG-650
• Description: GYRO, DUAL (X+Y) AXIS, +/-2000 DEG/S
• Manufacturer: INVENSENSE

Specifications of IDG-650

• No. Of Axes: 2
• Sensor Case Style: QFN
• No. Of Pins: 28
• Supply Voltage Range: 2.7V To 3.3V
• Operating Temperature Range: -20°C To +85°C
• Sensitivity Per Axis: 0.5mV / ° / S
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8.2.6
To further attenuate high-frequency noise, an optional external low-pass filter may be used.
8.2.7
The IDG-650 gyro has two X-outputs and two Y-outputs, with scale factors and full-scale sensitivities
as summarized below.
Having two sensitivities and two full-scale ranges per axis allows the end user to have one output that
can be used for faster motions such as full-motion gaming (over a full scale range of ±2000º/sec), and
a second output that can be used for slower motions such as for gesture and menu-navigation
functionality (over a full scale range of ±440º/sec). Thus a lower-resolution analog-to-digital converter
(ADC) may be used to digitize the motion, with the gain of 4.5 in the _4.5OUT output effectively giving
the user an additional two-plus bits of resolution.
The IDG-650 gyro outputs are independent of supply voltage (i.e. they are not ratiometric).
Gyro rotation rate is calculated as:
where the Zero-Rate Output (ZRO) is nominally VREF. There is a temperature dependence to ZRO,
and an initial accuracy to ZRO.
(Gyro Output Voltage – Gyro Zero-Rate Out) / Sensitivity
Axis
External Low-Pass Circuitry
Gyro Outputs
X
Y
-10
-15
-20
-25
-30
10
-5
5
0
1
Gyro Output
IDG-650 Dual-Axis Gyroscope
X4.5OUT
Y4.5OUT
X-OUT
Y-OUT
Product Specification
LPF Option 1 Process Corners
10
13 of 25
Phase
LPF Phase & Gain
Frequency (Hz)
Figure 5
Sensitivity (mV/º/s)
2.27
2.27
0.5
0.5
100
Gain
Nominal
Limits
PS-IDG-0650B-00-05
Release Date: 05/20/10
Full-Scale Range (±º/s)
1000
10
5
0
-5
-10
-15
-20
-25
-30
2000
2000
440
440