STLC7550TQFP 查看數據表（PDF） - STMicroelectronics

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STLC7550TQFP

LOW POWER LOW VOLTAGE ANALOG FRONT END

STMicroelectronics 

STLC7550

ELECTRICAL SPECIFICATIONS

Unless otherwise noted, Electrical Characteristics are specified over the operating range.

Typical values are given for VDD = 3V, Tamb = 25°C and for nominal Master clock frequency

MCLK = 1.536MHz and oversampling ratio = 160.

Absolute Maximum Ratings (referenced to GND)

Symbol

Parameter

VDD

VI,VIN

II,IIN

IO

IOUT

Toper

Tstg

PDMAX

ESD

DC Supply Voltage

Digital or Analog Input Voltage

Digital or Analog Input Current

Digital Output Current

Analog Output Current

Operating Temperature

Storage Temperature

Maximum Power Dissipation

Electrostatic Discharge

Value

Unit

-0.3, 7.0

V

-0.3, VDD+0.3

V

±1

mA

±20

mA

±10

mA

0, 70

°C

-40, 125

°C

200

mW

2000

V

Nominal DC Characteristics (VDD = 3V ± 5%, GND = 0V, TA = 0 to 70°C unless otherwise specified)

Symbol

Parameter

Min.

Typ.

Max.

Unit

VDD

Supply Voltage Range

2.70

3

5.5

V

POWER SUPPLY AND COMMON MODE VOLTAGE

SINGLE POWER SUPPLY (DVDD = AVDD)

IDDA

Analog Supply Current

IDDD

Digital Supply Current

IDD-LP

Supply Current in Low Power Mode MCLK Stopped

MCLK Running

VCM

Output Common Mode Voltage

VCM Output Voltage Load Current (see Note 1)

6

mA

4

mA

1

10

µA

200

µA

VDD/2-5% VDD/2 VDD/2+5% V

DIGITAL INTERFACE

VIL

Low Level Input Voltage

VIH

High Level Input Voltage

II

Input Current VI = VDD or VI = GND

VOH

High Level Output Voltage (ILOAD = -600µA)

VOL

Low Level Output Voltage (ILOAD = 800µA)

-0.3

0.5

V

DVDD-0.5

V

-10

±1

10

µA

DVDD-0.5

V

0.3

V

ANALOG INTERFACE

VREF

Tempco (VREF)

VCMO IN

VDIF IN

VOFF IN

VCMO OUT

VDIF OUT

VOFF OUT

RIN

ROUT

RL

CL

VADO OUT

Differential Reference Voltage Output

VREF = (VREFP - VREFN)

VREF Temperature Coefficient

Input Common Mode Offset Voltage = [(IN+)+(IN-)]/2 -VCM

Differential Input Voltage : [(IN+)-(IN-)] ≤ 2 x VREF

Differential Input DC Offset Voltage

Output Common Mode Voltage Offset :

(OUT+ + OUT-)/2 - VCM (see Note 1)

Differential Output Voltage : OUT+ - OUT- ≤ 2 x VREF

Differential Output DC Offset Voltage : (OUT+ - OUT-) (0000x)

Input Resistance IN+, IN- (id. AUX IN)

Output Resistance (OUT+, OUT-)

Load Resistance (OUT+, OUT-)

Load Capacitance (OUT+, OUT-)

Output A/D Modulator Voltage Offset : IN+ = IN- = VCM

1.15

-100

-100

-20

-100

100

10

-1000

1.25

200

2 x VREF

2 x VREF

50

1.35

100

100

20

100

20

+1000

V

ppm/°C

mV

Vpp

mV

mV

V

mV

kΩ

Ω

kΩ

pF

LSB

Note : 1. Device is very sensitive to noise on VCM Pin. VCM output voltage load current must be DC (<10µA). in order to drive dynamic load,

VCM must be buffered. AC variation in VCM current magnitude decrease A/D and D/A performance.

11/17

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