MCP6G04 Microchip Technology, MCP6G04 Datasheet - Page 24

• Manufacturer Part Number: MCP6G04
• Description: 110 Selectable Gain Amplifier
• Manufacturer: Microchip Technology

MCP6G01/2/3/4
4.8.4
Figure 4-12
of +10 in front of a MCP6G01. This shifts the overall
gain range to +10 V/V to +500 V/V (from +1 V/V to
+50 V/V).
FIGURE 4-12:
Range.
It is also easy to shift the gain range to lower gains (see
Figure
and the resistive voltage divider shifts the gain range
down to +0.1 V/V to +5.0 V/V (from +1 V/V to +50 V/V).
FIGURE 4-13:
Range.
DS22004A-page 24
V
V
IN
IN
4-13). The MCP6001 acts as a unity gain buffer,
MCP6001
1.11 kΩ
MCP6271
SHIFTED GAIN RANGE SGA
shows a circuit using a MCP6271 at a gain
10.0 kΩ
1.11 kΩ
SGA with Higher Gain
SGA with Lower Gain
10.0 kΩ
MCP6G01
MCP6G01
V
V
OUT
OUT
4.8.5
This family of SGAs is well suited for driving Analog-to-
Digital Converters (ADC). The gains (1, 10, and 50)
effectively increase the ADC’s input resolution by a
factor of as large as 50 (i.e., by 5.6 bits). This works
well for applications needing relative accuracy more
than absolute accuracy (e.g., power monitoring); see
Figure
FIGURE 4-14:
The low-pass filter in the block diagram reduces the
integrated noise at the MCP6G01’s output and serves
as an anti-aliasing filter. This filter may be designed
using Microchip’s FilterLab
www.microchip.com.
V
IN
4-14.
MCP6G01
ADC DRIVER
Low-pass
SGA as an ADC Driver.
Filter
© 2006 Microchip Technology Inc.
®
software, available at
MCP3001
10-bit
ADC
3
OUT