Opamp: SB1

 

Key Features

  • Rail-to-Rail Input and Output Range
  • Supply Voltage 4.5 - 5.5 V
  • Small Area 0.074mm²
  • Size x=305µm y=243µm
  • Suitable For SC and Antialiasing Filter Applications
  • Power-Down-Mode Ivdd < 1nA

Symbol

Description

The SB1 cell is an internally compensated operational amplifier with NMOS and PMOS input stage. The amplifier is designed for universal applications, such as switched capacitor or internal antialiasing filters.
The operational amplifier has a power-down mode to permit very low standby currents. This mode is controlled by the complementary signals "pd" and "xpd".

Pin List

Pin Description Capacitance
inn inverting input 1.0pF
inp noninverting input 1.0pF
xpd power down not 0.05pF
pd power down 0.05pF
out analogue output x
vdda positive analogue power supply x
vssa negative analogue power supply x

Electrical Parameters

Parameter Symbol Min Typ Max Unit
Power Supply Range Vdd 4.5
5.0
5.5
V
Temperature Range Temp -50
25
125
deg
AC Parameters
Open Loop Gain A0 98
110
112
dB
Unity Gain Bandwidth (100p F / 10M Ohms)
Phase Margin 		BW
Øm 		1.0
32
3.6
56
6.8
68
MHz
deg
Unity Gain Bandwidth (140p F / 10M Ohms)
Phase Margin 		BW
Øm 		1.6
28
3.0
54
9.5
64
MHz
deg
Common Mode Rejection Ratio CMRR 62
70
76
dB
Power Supply Rejection Ratio Vdd PSRRvdd 48
49
51
dB
Power Supply Rejection Ratio Vss PSRRvss 48
49
52
dB
Output Resistance Rout xx
xx
xx
KOhms
DC Parameters
Input Offset Voltage Vos -10

+10
mV
Power Supply Current Idd 0.1
0.33
1.4
mA
Power Consumption PVdd 0.45
1.65
7.7
mW
Output Source Current Isource 2.8
7.9
14.8
mA
Output Sink Current Isink 3.2
9.0
21.4
mA
Common Mode Input Range-low CMIR-L 0.00
0.00
0.00
V
Common Mode Input Range-high CMIR-H 4.50
5.00
5.50
V
Output Range-low (Rl = 10M) Vout-L 0.00
0.00
0.00
V
Output Range-high (Rl = 10M) Vout-H 4.50
5.00
5.50
V
Transient Parameters
Slew Rate - Rise SRP 1.4
4.0
8.8
V/µS
Slew Rate - Fall SRN 1.8
5.2
16.1
V/µS
Settling Time - Rise TSP 0.20
0.68
2.4
µS
Settling Time - Fall TSN 0.24
0.51
2.2
µS
Startup Time Tstart 0.3
1.0
2.5
µS
Total Harmonic Distortion THD -60
-65
-66
dB
Noise Parameters
Equivalent Input Noise @10Hz en 0.12
0.17
0.24
µV/Root Hz
Equivalent Input Noise @100KHz en 9
16
31
nV/Root Hz
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