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DS1267BS-050+

P1-P3P4-P6P7-P9P10-P12P13-P13
DS1267B
Figure 8 shows the device operating in a fixed gain attenuator where the potentiometer is used to
attenuate an incoming signal. Note the resistance R1 is chosen to be much greater than the wiper
resistance to minimize its effect on circuit gain.
INVERTING VARIABLE GAIN AMPLIFIER Figure 7
FIX GAIN ATTENUATOR Figure 8
Maxim Integrated ............................................................................................................................................................................................. 7
DS1267B
ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground (V
B
= GND) .......................................................... -0.5V to +7.0V
Voltage on Resistor Pins when V
B
= -5.5V ............................................................... -5.5V to (VCC + 0.5V)
Voltage on V
B ..................................................................................................................................................................................
-5.5V to GND
Operating Temperature ........................................................................................................... -40° to +85°C
Storage Temperature .......................................................................................................... -55°C to +125°C
Soldering Temperature ........................................................................................................... 260°C for 10s
* This is a stress rating only and functional operation of the device at these or any other conditions above
those indicated in the operation sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods of time may affect reliability.
RECOMMENDED DC OPERATING CONDITIONS
(-40°C to +85°C; V
CC
= 5.0V ±10%)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Supply Voltage V
CC
4.5 5.5 V 1
Input Logic 1 V
IH
0.7 x V
CC
V
CC
+ 0.5 V 1
Input Logic 0 V
IL
-0.5
+0.3 x
V
CC
V 1
Substrate Bias V
B
-5.5 GND V 1
Resistor Inputs L,H,W V
B
- 0.5 V
CC
+ 0.5 V 2
DC ELECTRICAL CHARACTERISTICS (-40°C to +85°C; V
CC
= 5.0V ±10%)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Supply Current I
CC
2.1 5 mA 7
Input Leakage I
LI
-1 +1 μA 9
Wiper Resistance R
W
900 2000
W
Wiper Current I
W
1 mA
Logic 1 Output at 2.4V I
OH
-1 mA 5
Logic 0 Output at 0.4V I
OL
4 mA 5
Standby Current I
STBY
0.6 2 μA
Maxim Integrated ............................................................................................................................................................................................. 8
DS1267B
ANALOG RESISTOR CHARACTERISTICS (-40°C to +85°C; V
CC
= 5.0V ± 10%)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
End-to-End Resistor Tolerance -20 +20 % 8
Integral Nonlinearity (INL) -1.6 ±.75 +1.6 LSB 3
Differential Nonlinearity (DNL) -0.5 ±0.3 +0.5 LSB 4
Temperature Coefficient 750 ppm/°C
CAPACITANCE (T
A
= +25°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Capacitance C
IN
5 pF
Output Capacitance C
OUT
7 pF
AC ELECTRICAL CHARACTERISTICS (-40°C to +85°C; V
CC
= 5.0V ±10%)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
CLK Frequency f
CLK
DC 3.5 MHz 6
Width of CLK Pulse t
CH
50 ns 6
Data Setup Time t
DC
30 ns 6
Data Hold Time t
CDH
10 ns 6
Propagation Delay Time Low to
High Level Clock to Output
t
PLH
250 ns 6
Propagation Delay Time High to
Low Level
t
PHL
250 ns 6
RST
High to Clock Input High
t
CC
50 ns 6
RST
Low to Clock Input High
t
HLT
50 ns 6
RST
Inactive
t
RLT
125 ns 6
NOTES:
1. All voltages are referenced to ground.
2. Resistor inputs cannot exceed the substrate bias voltage, V
B
, in the negative direction.
3. INL is used to determine wiper voltage versus expected voltage as determined by wiper position.
4. DNL is used to determine the change in voltage between successive tap positions.
5. C
OUT
is active regardless of the state of
RST
.
6. See Figures 9(a), (b), and (c).
7. See Figure 11.
8. Valid at +25°C only.
9. Digital Inputs
Maxim Integrated ............................................................................................................................................................................................. 9
P1-P3P4-P6P7-P9P10-P12P13-P13

DS1267BS-050+

Mfr. #:
Buy DS1267BS-050+
Manufacturer:
Maxim Integrated
Description:
Digital Potentiometer ICs Dual 256-step digital potentiometer, 50k ohm end to end resistance
Lifecycle:
New from this manufacturer.
Delivery:
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