Electrical Characteristics: Unless ot" />
參數(shù)資料
型號(hào)： MCP42050T-E/ST
廠商： Microchip Technology
文件頁(yè)數(shù)： 22/28頁(yè)
文件大?。?/td> 0K
描述： IC POT DGTL 50K 2CH SPI 14TSSOP
標(biāo)準(zhǔn)包裝： 2,500
接片： 256
電阻（歐姆）： 50k
電路數(shù)： 2
溫度系數(shù)： 標(biāo)準(zhǔn)值 800 ppm/°C
存儲(chǔ)器類型： 易失
接口： 3 線串行（芯片選擇）
電源電壓： 2.7 V ~ 5.5 V
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 14-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 14-TSSOP
包裝： 帶卷 (TR)
2003 Microchip Technology Inc.
DS11195C-page 3
MCP41XXX/42XXX
DC CHARACTERISTICS: 50 k
VERSION
Electrical Characteristics: Unless otherwise indicated, VDD = +2.7V to 5.5V, TA = -40°C to +85°C (TSSOP devices are only specified at +25°C and
+85°C). Typical specifications represent values for VDD = 5V, VSS = 0V, VB = 0V, TA = +25°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Rheostat Mode
Nominal Resistance
R
35
50
65
k
TA = +25°C (Note 1)
Rheostat Differential Non-Linearity
R-DNL
-1
±1/4
+1
LSB
Rheostat Integral Non-Linearity
R-INL
-1
±1/4
+1
LSB
Rheostat Tempco
RAB/T
—
800
—
ppm/°C
Wiper Resistance
RW
—
125
175
VDD = 5.5V, IW = 1 mA, code 00h
RW
—
175
250
VDD = 2.7V, IW = 1 mA, code 00h
Wiper Current
IW
-1
—
+1
mA
Nominal Resistance Match
R/R
—
0.2
1
%
MCP42050 only, P0 to P1;TA = +25°C
Potentiometer Divider
Resolution
N
8
—
Bits
Monotonicity
N
8
—
Bits
Differential Non-Linearity
DNL
-1
±1/4
+1
LSB
Integral Non-Linearity
INL
-1
±1/4
+1
LSB
Voltage Divider Tempco
VW/T
—
1
—
ppm/°C Code 80h
Full-Scale Error
VWFSE
-1
-0.25
0
LSB
Code FFh, VDD = 5V, see Figure 2-25
VWFSE
-1
-0.35
0
LSB
Code FFh, VDD = 3V, see Figure 2-25
Zero-Scale Error
VWZSE
0
+0.25
+1
LSB
Code 00h, VDD = 5V, see Figure 2-25
VWZSE
0
+0.35
+1
LSB
Code 00h, VDD = 3V, see Figure 2-25
Resistor Terminals
Voltage Range
VA,B,W
0—
VDD
Capacitance (CA or CB)
—
11
—
pF
f =1 MHz, Code = 80h, see Figure 2-30
Capacitance
CW
—
5.6
—
pF
f =1 MHz, Code = 80h, see Figure 2-30
Dynamic Characteristics (All dynamic characteristics use VDD = 5V)
Bandwidth -3dB
BW
—
280
—
MHz
VB = 0V, Measured at Code 80h,
Output Load = 30 PF
Settling Time
tS
—8
—
S
VA = VDD,VB = 0V, ±1% Error Band, Transition
from Code 00h to Code 80h, Output Load = 30 pF
Resistor Noise Voltage
eNWB
—20
—
nV/
√Hz VA = Open, Code 80h, f =1 kHz
Crosstalk
CT
—-95
—dB
VA = VDD, VB = 0V (Note 5)
Digital Inputs/Outputs (CS, SCK, SI, SO) See Figure 2-12 for RS and SHDN pin operation.
Schmitt Trigger High-Level Input Voltage
VIH
0.7VDD
——
V
Schmitt Trigger Low-Level Input Voltage
VIL
—
0.3VDD
V
Hysteresis of Schmitt Trigger Inputs
VHYS
—0.05VDD
—
Low-Level Output Voltage
VOL
—
0.40
V
IOL = 2.1 mA, VDD = 5V
High-Level Output Voltage
VOH
VDD - 0.5
—
V
IOH = -400 A, VDD = 5V
Input Leakage Current
ILI
-1
—
+1
A
CS = VDD, VIN = VSS or VDD, includes VA SHDN=0
Pin Capacitance (All inputs/outputs)
CIN, COUT
—10
—
pF
VDD = 5.0V, TA = +25°C, fc = 1 MHz
Power Requirements
Operating Voltage Range
VDD
2.7
—
5.5
V
Supply Current, Active
IDDA
—
340
500
A
VDD = 5.5V, CS = VSS, fSCK = 10 MHz,
SO = Open, Code FFh (Note 6)
Supply Current, Static
IDDS
—0.01
1
A
CS, SHDN, RS = VDD = 5.5V, SO = Open (Note 6)
Power Supply Sensitivity
PSS
—
0.0015
0.0035
%/%
VDD = 4.5V - 5.5V, VA = 4.5V, Code 80h
PSS
—
0.0015
0.0035
%/%
VDD = 2.7V - 3.3V, VA = 2.7V, Code 80h
Note
1:
VAB = VDD, no connection on wiper.
2:
Rheostat position non-linearity R-INL is the deviation from an ideal value measured between the maximum resistance and the minimum
resistance wiper positions. R-DNL measures the relative step change from the ideal between successive tap positions. IW = VDD/R for
+3V or +5V for 50 k
version. See Figure 2-26 for test circuit.
3:
INL and DNL are measured at VW with the device configured in the voltage divider or potentiometer mode. VA = VDD and VB = 0V. DNL
specification limits of ±1 LSB max are specified monotonic operating conditions. See Figure 2-25 for test circuit.
4:
Resistor terminals A,B and W have no restrictions on polarity with respect to each other. Full-scale and zero-scale error were measured
5:
Measured at VW pin where the voltage on the adjacent VW pin is swinging full scale.
6:
Supply current is independent of current through the potentiometers.
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