High Performance Bandgap Reference IP
Features:
•
•
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•
•
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40nm TSMC CMOS Process
First order BGR
High PSRR for wide frequency range
o Worst case 52dB @ 2MHz
550mV low noise reference output
o Max noise 400nV @ 10kHz
Excellent temperature stability
o Max 20ppm/°C
Low power design
o Worst case 22µA
Very low start-up time
o 15µs in worst case
IP Status – Silicon ready
Block Description:
The BGR IP is low power first order bandgap reference with worst case PSRR of 52dB at
2MHz. The maximum power consumption is 22µA and it produces a reference voltage of
550mV with worst case temperature variation of 20ppm/°C for a wide temperature range of 40°C to 125°C. The BGR IP operates with 1.4-1.8V AVDD supply and takes in a
Reference/PTAT (proportional to absolute temperature) current to bias the internal amplifier.
The current consumption of the module can be reduced to as low as 15µA by adjusting the
“Test Mode” bits. The noise in the generated 550mV reference voltage is less than 400nV at
10kHz across corners. The start-up time of the BGR IP is only 14.7µs in the worst case.
Pin Diagram:
Pin Description:
Pin Name
Pin Direction
Description
AVDD
InputOutput
Analog supply – 1.4V to 1.8V
AGND
InputOutput
Analog ground
IREF/IPTAT
Input
40nA constant or ptat current supply
Marquee Semiconductor Inc. Jan 2021.
Coarse Trim <5:0>
Input
Together with fine trim, it is used to adjust
the 550mV reference output
Fine Trim <5:0>
Input
Together with coarse trim, it is used to adjust
the 550mV reference output
EN
Input
Enable High Input of the BGR
Test Mode <1:0>
Input
Test modes to reduce power consumption the
BGR.
VREF
Output
550mV reference output
IPTAT
Output
PTAT current outputs (multiples of 250nA)
HP BGR Datasheet:
Parameter
Symbol
Conditions
Operating
Temperature
Ta
Analog Supply
Voltage
AVDD
Current Consumption
IDD
Value
Units
Min
Typ
Max
-
-40
+27
+125
°C
-
1.4
1.6
1.8
V
00
17.17
19
21.4
01
-
14.52
-
10
-
13
-
11
-
12.28
-
Test
Mode
µA
Shutdown Current
ISD
-
0.1
0.6
260
nA
PSRR @ 2MHz
PDD2
-
52
55.8
59.4
dB
Output Reference
VREF
-
549
550
550.8
mV
Noise @ 10kHz
VN10
-
260
312
394
nV
Temperature
Coefficient
TCO
10.56
10.64
19.9
ppm/°C
Start-up time
TSU
-
11.8
14.7
µs
Test
Mode
00
-
Contact: sales@marqueesemi.com
Marquee Semiconductor Inc. Jan 2021.