MSP430FE42x2

MIXED SIGNAL MICROCONTROLLER

SLAS616 − JULY 2008

29

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

electrical characteristics over recommended operating free-air temperature (unless otherwise

noted) (continued)

ESP430CE1B, SD16 and ESP430 power supply and recommended operating conditions

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

AVCC

Analog supply

voltage

AVCC = DVCC

AVSS = DVSS = 0V

2.7

3.6

V

SD16LP = 0,

GAIN(V): 1, GAIN(I1): 1, I2: off

3 V

2.0

2.6

SD16LP

0,

fMCLK = 4MHz,

f

f

/4

GAIN(V): 1, GAIN(I1): 32, I2: off

3 V

2.4

3.3

Total digital and

analog supply

fSD16 = fMCLK/4,

SD16REFON = 1,

GAIN(V): 1, GAIN(I1): 1, GAIN(I2): 1

3 V

2.7

3.6

I

analog supply

current when

SD16REFON = 1,

SD16VMIDON = 0

GAIN(V): 1, GAIN(I1): 32, GAIN(I2): 32

3 V

3.4

4.9

mA

IESP430

current when

ESP430 and SD16

i

SD16LP = 1,

GAIN(V): 1, GAIN(I1): 1, I2: off

3 V

1.5

2.1

mA

active

(IAVCC +IDVCC)

SD16LP

1,

fMCLK = 2 MHz,

f

f

/4

GAIN(V): 1, GAIN(I1): 32, I2: off

3 V

1.6

2.1

(IAVCC + IDVCC)

fSD16 = fMCLK/4,

SD16REFON = 1,

GAIN(V): 1, GAIN(I1): 1, GAIN(I2): 1

3 V

2.1

2.8

SD16REFON = 1,

SD16VMIDON = 0

GAIN(V): 1, GAIN(I1): 32, GAIN(I2): 32

3 V

2.2

3.0

Analog supply

SD16LP = 0,

GAIN: 1, 2

3 V

650

950

Analog supply

current: one active

SD16LP = 0,

fSD16 = 1 MHz,

GAIN: 4, 8, 16

3 V

730

1100

ISD16

current: one active

SD16 channel

fSD16

1 MHz,

SD16OSR = 256

GAIN: 32

3 V

1050

1550

µA

ISD16

including internal

reference (ESP430

SD16LP = 1,

f

0 5 MHz

GAIN: 1

3 V

620

930

µA

reference (ESP430

disabled)

fSD16 = 0.5 MHz,

SD16OSR = 256

GAIN: 32

3 V

700

1060

fMAINS

Mains frequency

range

33

80

Hz

f

Analog front-end

input clock

SD16LP = 0 (low-power mode disabled)

3 V

1

MHz

fSD16

input clock

frequency

SD16LP = 1 (low-power mode enabled)

3 V

0.5

MHz

ESP430CE1B, SD16 input range (see Note 1)

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

SD16GAINx = 1, SD16REFON = 1

±500

Differential input

SD16GAINx = 2, SD16REFON = 1

±250

V

Differential input

voltage range for

specified

SD16GAINx = 4, SD16REFON = 1

±125

mV

VID

specified

performance

SD16GAINx = 8, SD16REFON = 1

±62

mV

performance

(see Note 2)

SD16GAINx = 16, SD16REFON = 1

±31

(see Note 2)

SD16GAINx = 32, SD16REFON = 1

±15

Z

Input impedance

(one input pin to

fSD16 = 1MHz, SD16GAINx = 1

3 V

200

k

Ω

ZI

(one input pin to

AVSS)

fSD16 = 1MHz, SD16GAINx = 32

3 V

75

k

Ω

Z

Differential input

impedance

fSD16 = 1MHz, SD16GAINx = 1

3 V

300

400

k

Ω

ZID

impedance

(IN+ to IN−)

fSD16 = 1MHz, SD16GAINx = 32

3 V

100

150

k

Ω

VI

Absolute input

voltage range

AVSS−

1 V

AVCC

V

VIC

Common-mode

input voltage range

AVSS−

1 V

AVCC

V

NOTES:

1. All parameters pertain to each SD16 channel.

2. The analog input range depends on the reference voltage applied to VREF. If VREF is sourced externally, the full-scale range is defined

by VFSR+ = +(VREF/2)/GAIN and VFSR− = −(VREF/2)/GAIN. The analog input range should not exceed 80% of VFSR+ or VFSR−.