Peripheral IC. BH45B1224 Datasheet

BH45B1224 IC. Datasheet pdf. Equivalent

BH45B1224 Datasheet
Recommendation BH45B1224 Datasheet
Part BH45B1224
Description 24-Bit Delta-Sigma A/D Peripheral IC
Feature BH45B1224; BH45B1224 24-Bit Delta-Sigma A/D Peripheral IC Features • Wide operating voltage: 2.4V~5.5V • Int.
Manufacture Holtek Semiconductor
Datasheet
Download BH45B1224 Datasheet




Holtek Semiconductor BH45B1224
BH45B1224
24-Bit Delta-Sigma A/D Peripheral IC
Features
• Wide operating voltage: 2.4V~5.5V
• Internal Programmable Gain Amplifier
• Internal I2C interface for external communiation
• 5Hz~1.6kHz ADC output data rate
• Internal temperature sensor for compensation
• Package Types: 8-pin SOP/16-pin NSOP
Applications
• Instrumentation
• Health Monitoring Equipment
• Precision Sensing
General Description
The BH45B1224 is a multi-channel 24-bit Delta
Sigma A/D converter which includes a programmable
gain amplifier and is designed for applications that
interface differentially to analog signals. The device
has the benefits of low noise and high accuracy
and communicates with external hardware using an
internal I2C bus. This highly functionally integrated
Delta Sigma analog to digital converter with its
high accuracy and low power specifications offers a
superior solution for interfacing to external sensors
especially for battery powered applications.
Block Diagram
AVDD
VSS
VREFN
AVSS
VREFP
AN0
AN2
AN1
AN3
VCMEN
AVSS
Bandgap
1.25V
AVSS
VCM
VCM
AVDD
AVSS
AVSS
CHSP[2:0]
ADCK[4:0]
fSYS
Divider fMCLK
VCM
VREFS
01
VRBUFP
VRP
01
VRN
VRBUFN
HIRC
HXT
ADC CLK
VCM
VTSP
VCM
VTSN
IN1 DI+
INX
INIS
IN2
DI-
INX[1:0]
ADOFF
PGAGN = x1, x2,
x4, x8, x16, x32,
x64
PGS[2:0]
REFP
REFN
VREFGN = x1, x½ x¼
24-Bit -ADC
ADGN = x1, x2
fADCK
ADOFF ADSLP
VGS[1:0]
AGS[1:0]
DCSET[2:0]
PGAON PGAOP
SINC
Filter
EOC
24
ADOFF
ADRST
FLMS[2:0]
ADOR[3:0]
CHSN[2:0]
AVDD VCM
DACVRS
ADINT
ADRH
ADRM
ADRL
ADCDL
OSC1/A1
OSC2/A2
XTSB
SCL
SDA
VDACO
12-bit
D/A Converter
D[11:0]
DACEN
Rev. 1.00
1 January 04, 2018



Holtek Semiconductor BH45B1224
BH45B1224
Pin Assignment
VCM
AN1
AN0
SDA
18
27
36
45
BH45B1224
8 SOP-B
VREFN/AVSS/VSS
VREFP
VDD/AVDD
SCL
VCM
AN0
AN1
AN2
AN3
XTSB
SDA
SCL
1 16
2 15
3 14
4 13
5 12
6 11
7 10
89
BH45B1224
16 NSOP-A
AVSS
VREFN
VREFP
AVDD
VDD
VSS
OSC1/A1
OSC2/A2
Pin Description
Pin Name
AN0
AN1
AN2
AN3
VERFP
VERFN
SCL
SDA
XTSB
OSC1/A1
OSC2/A2
VCM
VDD
AVDD
VSS
AVSS
Type
AI
AI
AI
AI
AI
AI
I
I/O
I
OSC
I
OSC
I
AO
PWR
PWR
PWR
PWR
Description
ADC input channel 0
ADC input channel 1
ADC input channel 2
ADC input channel 3
Positive reference input voltage
Negative reference input voltage
I2C clock line
I2C data line
Low: external crystal, High: internal oscillator
Oscillator input
I2C slave address select
Oscillator output
I2C slave address select
ADC internal Common mode voltage output
Digital power supply
Analog power supply
Digital negative power supply
Analog negative power supply
Pin Type Legend
Pin Type
I
I/O
OSC
AI
AO
PWR
Description
Digital Input
Digital Input/Output
Oscillator
Analog Input
Analog Output
Power
Rev. 1.00
2 January 04, 2018



Holtek Semiconductor BH45B1224
BH45B1224
Absolute Maximum Ratings
Supply Voltage...........................VSS-0.3V toVSS+6.0V
Input Voltage............................ VSS-0.3V to VDD+0.3V
Storage Temperature........................... -50°C to 125°C
Operating Temperature......................... -40°C to 85°C
IOL Total.............................................................. 80mA
IOH Total............................................................ -80mA
Total Power Dissipation................................. 500mW
Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maximum Ratings”
may cause substantial damage to the device. Functional operation of this device at other conditions beyond
those listed in the specification is not implied and prolonged exposure to extreme conditions may affect
device reliability.
D.C. Characteristics
Symbol
Parameter
Operating Voltage (HXT)
VDD
Operating Voltage (HIRC)
Operating Current (HXT)
IDD
Operating Current (HIRC)
ISTB Standby Current
Pull-high resistance for Input
RPH Ports (XTSB, A1, A2)
Operating Temperature: -40°C to 85°C, Ta=25°C, Typical
Test Conditions
VDD Conditions
fSYS=fHXT=4MHz
— fSYS=fHXT=8MHz
fSYS=fHXT=12MHz
— fSYS=fHIRC=4.9152MHz
3V No load, all peripherals off,
5V fSYS=fHXT=4MHz
3V No load, all peripherals off,
5V fSYS=fHIRC=4.9152MHz
3V
5V No load, all peripherals off
3V —
5V —
Min. Typ. Max. Unit
2.4 — 5.5 V
2.4 — 5.5 V
2.4 — 5.5 V
2.4 — 5.5 V
— 500 750 μA
— 1 1.5 mA
— 400 600 μA
— 0.8 1.2 mA
— — 1 μA
— — 2 μA
20 60 100
10 30 50
A.C. Characteristics
Symbol
Parameter
System Clock (HXT)
fSYS
System Clock (HIRC)
fHIRC
High Speed Internal RC
Oscillator (HIRC)
Operating Temperature: -40°C to 85°C, Ta=25°C, Typical
Test Conditions
VDD Conditions
2.4V~5.5V fSYS=fHXT=4MHz
2.4V~5.5V fSYS=fHXT=8MHz
2.4V~5.5V fSYS=fHIRC=4.9152MHz
3V Ta=25°C
3V±0.3V Ta=0°C~70°C
3V±0.3V Ta=-40°C~85°C
2.4V~5.5V Ta=0°C~70°C
2.4V~5.5V Ta=-40°C~85°C
Min. Typ. Max. Unit
-2%
-5%
-10%
-7%
-10%
4
8
4.9152
4.9152
4.9152
4.9152
4.9152
4.9152
+2%
+5%
+10%
+7%
+10%
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
Rev. 1.00
3 January 04, 2018







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