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  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP6S28 Datasheet

(MCP6S21 - MCP6S28) Low Gain PGA

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M
MCP6S21/2/6/8
Single-Ended, Rail-to-Rail I/O, Low Gain PGA
Features
Description
• Multiplexed Inputs: 1, 2, 6 or 8 channels
• 8 Gain Selections:
- +1, +2, +4, +5, +8, +10, +16 or +32 V/V
• Serial Peripheral Interface (SPI™)
• Rail-to-Rail Input and Output
• Low Gain Error: ±1% (max)
• Low Offset: ±275 µV (max)
• High Bandwidth: 2 to 12 MHz (typ)
• Low Noise: 10 nV/Hz @ 10 kHz (typ)
• Low Supply Current: 1.0 mA (typ)
• Single Supply: 2.5V to 5.5V
Typical Applications
• A/D Converter Driver
• Multiplexed Analog Applications
• Data Acquisition
The Microchip Technology Inc. MCP6S21/2/6/8 are
analog Programmable Gain Amplifiers (PGA). They
can be configured for gains from +1 V/V to +32 V/V and
the input multiplexer can select one of up to eight chan-
nels through an SPI port. The serial interface can also
put the PGA into shutdown to conserve power. These
PGAs are optimized for high speed, low offset voltage
and single-supply operation with rail-to-rail input and
output capability. These specifications support single
supply applications needing flexible performance or
multiple inputs.
The one channel MCP6S21 and the two channel
MCP6S22 are available in 8-pin PDIP, SOIC and
MSOP packages. The six channel MCP6S26 is avail-
able in 14-pin PDIP, SOIC and TSSOP packages. The
eight channel MCP6S28 is available in 16-pin PDIP
and SOIC packages. All parts are fully specified from
-40°C to +85°C.
• Industrial Instrumentation
• Test Equipment
• Medical Instrumentation
Blockwww.DataSheet4U.com Diagram
VDD
Package Types
MCP6S21
PDIP, SOIC, MSOP
VOUT 1
8 VDD
CH0 2
7 SCK
VREF 3
VSS 4
6 SI
5 CS
MCP6S22
PDIP, SOIC, MSOP
VOUT 1
8 VDD
CH0 2
7 SCK
CH1 3
6 SI
VSS 4
5 CS
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CS
SI
SO
SCK
MUX
SPI™
Logic
+
-
Gain 8
Switches
RF
RG
VOUT
MCP6S26
PDIP, SOIC, TSSOP
MCP6S28
PDIP, SOIC
VOUT 1
CH0 2
14 VDD VOUT 1
13 SCK CH0 2
16 VDD
15 SCK
CH1 3
12 SO CH1 3
14 SO
CH2 4
11 SI
CH2 4
13 SI
CH3 5
CH4 6
CH5 7
10 CS
9 VSS
8 VREF
CH3 5
CH4 6
CH5 7
CH6 8
12 CS
11 VSS
10 VREF
9 CH7
POR
VSS
VREF
2003 Microchip Technology Inc.
DS21117A-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP6S28 Datasheet

(MCP6S21 - MCP6S28) Low Gain PGA

No Preview Available !

MCP6S21/2/6/8
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
VDD - VSS .........................................................................7.0V
All inputs and outputs....................... VSS - 0.3V to VDD +0.3V
Difference Input voltage ........................................ |VDD - VSS|
Output Short Circuit Current...................................continuous
Current at Input Pin .............................................................±2 mA
Current at Output and Supply Pins ................................ ±30 mA
Storage temperature .....................................-65°C to +150°C
Junction temperature .................................................. +150°C
ESD protection on all pins (HBM;MM).................. ≥ 2 kV; 200V
† Notice: Stresses above those listed under "Maximum
Ratings" may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operation listings of this specification is not implied. Exposure
to maximum rating conditions for extended periods may affect
device reliability.
DC CHARACTERISTICS
PIN FUNCTION TABLE
Name
VOUT
CH0-CH7
VSS
VDD
SCK
SI
SO
CS
VREF
Function
Analog Output
Analog Inputs
Negative Power Supply
Positive Power Supply
SPI Clock Input
SPI Serial Data Input
SPI Serial Data Output
SPI Chip Select
External Reference Pin
Electrical Specifications: Unless otherwise indicated, TA = +25°C, VDD = +2.5V to +5.5V, VSS = GND, VREF = VSS, G = +1 V/V,
Input = CH0 = (0.3V)/G, CH1 to CH7 = 0.3V, RL = 10 kto VDD/2, SI and SCK are tied low and CS is tied high.
Parameters
Sym Min Typ
Max Units
Conditions
Amplifier Input
Input Offset Voltage
Input Offset Voltage Drift
Power Supply Rejection Ratio
VOS
VOS/TA
PSRR
-275
70
www.DataSheet4+U.2co7m5
±4 —
85 —
µV
µV/°C
dB
G = +1, VDD = 4.0V
TA = -40 to +85°C
G = +1 (Note 1)
Input Bias Current
Input Bias Current over
Temperature
Input Impedance
Input Voltage Range
Amplifier Gain
IB
IB
ZIN
VIVR
— ±1
— — 250
— 1013||15
VSS0.3
VDD+0.3
pA
pA
||pF
V
CHx = VDD/2
TA = -40 to +85°C,
CHx = VDD/2
Nominal Gains
G
— 1 to 32
V/V +1, +2, +4, +5, +8, +10, +16 or +32
DC Gain Error
G = +1
G +2
DC Gain Drift
G = +1
G +2
Internal Resistance
Internal Resistance over
Temperature
Amplifier Output
gE
gE
G/TA
G/TA
RLAD
RLAD/TA
-0.1
-1.0
3.4
±0.0002
±0.0004
4.9
+0.028
+0.1
+1.0
6.4
%
%
%/°C
%/°C
k
%/°C
VOUT 0.3V to VDD 0.3V
VOUT 0.3V to VDD 0.3V
TA = -40 to +85°C
TA = -40 to +85°C
(Note 1)
(Note 1)
TA = -40 to +85°C
DC Output Non-linearity G = +1
VONL
— ±0.003
— % of FSR VOUT = 0.3V to VDD 0.3V, VDD = 5.0V
G +2
VONL
— ±0.001
— % of FSR VOUT = 0.3V to VDD 0.3V, VDD = 5.0V
Maximum Output Voltage Swing VOH, VOL VSS+20
VDD-100
mV G +2; 0.5V output overdrive
VSS+60
VDD-60
G +2; 0.5V output overdrive,
VREF = VDD/2
Short-Circuit Current
IO(SC)
±30
mA
Note 1: RLAD (RF + RG in Figure 4-1) connects VREF, VOUT and the inverting input of the internal amplifier. The MCP6S22 has
VREF tied internally to VSS, so VSS is coupled to the internal amplifier and the PSRR spec describes PSRR+ only. We
recommend the MCP6S22’s VSS pin be tied directly to ground to avoid noise problems.
2: IQ includes current in RLAD (typically 60 µA at VOUT = 0.3V). Both IQ and IQ_SHDN exclude digital switching currents.
3: The output goes Hi-Z and the registers reset to their defaults; see Section 5.4, “Power-On Reset”.
DS21117A-page 2
2003 Microchip Technology Inc.


Part Number MCP6S28
Description (MCP6S21 - MCP6S28) Low Gain PGA
Maker Microchip Technology
Total Page 30 Pages
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