MSP430x22x2, MSP430x22x4

MIXED SIGNAL MICROCONTROLLER

SLAS504B − JULY 2006 − REVISED JULY 2007

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

electrical characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (continued)

10-bit ADC, power supply and input range conditions (see Note 1)

PARAMETER TEST CONDITIONS T

VCC MIN TYP MAX UNIT

Analog supply voltage

range

= 0 V 2.2 3.6 V

Analog input voltage range

(see Note 2)

All Ax terminals.

Analog inputs selected in

ADC10AE register

0 V

ADC10 supply current

ADC10CLK

= 5.0 MHz

ADC10ON = 1, REFON = 0,

ADC10SHT0 1

I: -40−85°C

2.2 V 0.52 1.05

ADC10

supply

current

(see Note 3)

ADC10SHT0 = 1,

ADC10SHT1 = 0,

ADC10DIV = 0

40 85 C

T: -40−105°C

3 V 0.6 1.2

Reference supply current,

reference buffer disabled

ADC10CLK

= 5.0 MHz,

ADC10ON = 0, REF2_5V = 0,

REFON = 1, REFOUT = 0

I: -40−85°C

T: -40−105°C

2.2 V/3 V

025

REF+

reference buffer disabled

(see Note 4)

ADC10CLK

= 5.0 MHz,

ADC10ON = 0, REF2_5V = 1,

REFON = 1, REFOUT = 0

I: -40−85°C

T: -40−105°C

3 V

0.25 0.4 mA

Reference buffer supply

current with ADC10SR 0

ADC10CLK

= 5.0 MHz,

ADC10ON = 0,

REFON 1 REF2 5V 0

-40−85°C 2.2 V/3 V 1.1 1.4

REFB,0

current with ADC10SR = 0

(see Note 4)

REFON = 1, REF2_5V = 0,

REFOUT = 1,

ADC10SR=0

105°C 2.2 V/3 V 1.8

Reference buffer supply

current with ADC10SR 1

ADC10CLK

= 5.0 MHz,

ADC10ON = 0,

REFON = 1

-40−85°C 2.2 V/3 V 0.5 0.7

REFB,1

current with ADC10SR = 1

(see Note 4)

REFON

REF2_5V = 0,

REFOUT = 1,

ADC10SR=1

105°C 2.2 V/3 V 0.8

Input capacitance

Only one terminal Ax selected

at a time

I: -40−85°C

T: -40−105°C

27 pF

Input MUX ON resistance 0V ≤ V

≤ V

I: -40−85°C

T: -40−105°C

2.2 V/3 V 2000 Ω

NOTES: 1. The leakage current is defined in the leakage current table with Px.x/Ax parameter.

2. The analog input voltage range must be within the selected reference voltage range V

R+

to V

R−

for valid conversion results.

3. The internal reference supply current is not included in current consumption parameter I

ADC10

4. The internal reference current is supplied via terminal V

. Consumption is independent of the ADC10ON control bit, unless a

conversion is active. The REFON bit enables the built-in reference to settle before starting an A/D conversion.

MSP430x22x2, MSP430x22x4

MIXED SIGNAL MICROCONTROLLER

SLAS504B − JULY 2006 − REVISED JULY 2007

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

electrical characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (continued)

10-bit ADC, built-in voltage reference

PARAMETER TEST CONDITIONS VCC MIN TYP MAX UNIT

P iti b ilt i f

VREF+

≤ 1 mA, REF2_5V = 0 2.2

CC,REF+

Positive built-in reference

analog supply voltage range

VREF+

≤ 0.5 mA, REF2_5V = 1 2.8

REF+

ana

og supp

y vo

age range

VREF+

≤ 1 mA, REF2_5V = 1 2.9

Positive built-in reference

VREF+

≤ I

VREF+

max, REF2_5V = 0 2.2 V/3 V 1.41 1.5 1.59

REF+

Positive

built in

reference

voltage

VREF+

≤ I

VREF+

max, REF2_5V = 1 3 V 2.35 2.5 2.65

Maximum V

REF+

load

2.2 V ±0.5

LD,VREF+

Maximum

REF

load

current

3 V ±1

V load regulation

VREF+

= 500 μA ± 100 μA,

Analog input voltage V

≈ 0.75 V,

REF2_5V = 0

2.2 V/3 V ±2

LSB

REF+

load regulation

VREF+

= 500 μA ± 100 μA,

Analog input voltage V

≈ 1.25 V,

REF2_5V = 1

3 V ±2

LSB

REF+

load regulation

VREF+

= 100 μA → 900 μA,

≈ 0.5 x V

REF+

ADC10SR=0

400

REF

load

regulation

response time

≈

REF

Error of conversion result

≤1 LSB

ADC10SR=1

3 V

2000

VREF+

Max. capacitance at pin

REF+

(see Note 1)

VREF+

≤±1 mA,

REFON = 1, REFOUT = 1

2.2 V/3 V 100 pF

REF+

Temperature coefficient

VREF+

= const. with

0 mA ≤ I

VREF+

≤ 1 mA

2.2 V/3 V ±100 ppm/°C

REFON

Settling time of internal

reference voltage

(see Note 2)

VREF+

= 0.5 mA, REF2_5V = 0,

REFON = 0 → 1

3.6 V 30 μs

VREF+

= 0.5 mA,

REF2_5V = 0,

ADC10SR=0

22V

Settling time of reference

buffer

REF2

REFON = 1,

REFBURST = 1

ADC10SR=1

2.2 V

2.5

REFBURST

buffer

(see Note 2)

VREF+

= 0.5 mA,

REF2_5V = 1,

ADC10SR=0

μs

REF2

REFON = 1,

REFBURST = 1

ADC10SR=1

3 V

4.5

NOTES: 1. The capacitance applied to the internal buffer operational amplifier, if switched to terminal P2.4/TA2/A4/V

REF+

eREF+

(REFOUT=1),

must be limited; the reference buffer may become unstable otherwise.

2. The condition is that the error in a conversion started after t

REFON

or t

RefBuf

is less than ±0.5 LSB.

MSP430x22x2, MSP430x22x4

MIXED SIGNAL MICROCONTROLLER

SLAS504B − JULY 2006 − REVISED JULY 2007

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

electrical characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (continued)

10-bit ADC, external reference (see Note 1)

PARAMETER TEST CONDITIONS VCC MIN TYP MAX UNIT

Positive external reference input

eREF+

> V

eREF−

SREF1 = 1, SREF0 = 0

1.4 V

eREF+

Positive

external

reference

input

voltage range (see Note 2)

eREF−

≤ V

eREF+

≤ V

− 0.15 V,

SREF1 = 1, SREF0 = 1 (see Note 3)

1.4 3.0

eREF−

Negative external reference input

voltage range (see Note 4)

eREF+

> V

eREF−

0 1.2 V

ΔV

eREF

Differential external reference input

voltage range

ΔV

eREF

= V

eREF+

− V

eREF−

eREF+

> V

eREF−

(see Note 5) 1.4 V

Static input current into V

0V ≤ V

eREF+

≤ V

SREF1 = 1, SREF0 = 0

2 2 V/3 V

±1

μA

VeREF+

Static input current into V

eREF+

0V ≤V

eREF+

≤ V

− 0.15 V ≤ 3 V,

SREF1 = 1, SREF0 = 1 (see Note 3)

2.2 V/3 V

μA

VeREF−

Static input current into V

eREF−

0V ≤ V

eREF−

≤ V

2.2 V/3 V ±1 μA

NOTES: 1. The external reference is used during conversion to charge and discharge the capacitance array. The input capacitance, C

, is also

the dynamic load for an external reference during conversion. The dynamic impedance of the reference supply should follow the

recommendations on analog-source impedance to allow the charge to settle for 10-bit accuracy.

2. The accuracy limits the minimum positive external reference voltage. Lower reference voltage levels may be applied with reduced

accuracy requirements.

3. Under this condition, the external reference is internally buffered. The reference buffer is active and requires the reference buffer

supply current I

REFB

. The current consumption can be limited to the sample and conversion period with REBURST = 1.

4. The accuracy limits the maximum negative external reference voltage. Higher reference voltage levels may be applied with reduced

accuracy requirements.

5. The accuracy limits the minimum external differential reference voltage. Lower differential reference voltage levels may be applied

with reduced accuracy requirements.

Part #	MSP430F2274TRHAT
Description	MCU 16-bit MSP430 MSP430 RISC32KB Flash 2.5V/3.3V 40-Pin
Category	IC
Availability	In Stock
Qty	214

Qty	Price
1 - 44	$3.57032
45 - 89	$2.84003
90 - 134	$2.67774
135 - 179	$2.48841
180 +	$2.21793

Manufacturer	Available	Qty
Texas Instruments Date Code: 0706	Freelance Stock: 198 Ships Immediately
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MSP430F2274TRHAT

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