6

bq78350-R1

SLUSCD0B – AUGUST 2015 – REVISED NOVEMBER 2018

www.ti.com

Product Folder Links: bq78350-R1

Submit Documentation Feedback

Copyright © 2015–2018, Texas Instruments Incorporated

Electrical Characteristics: ADC (continued)

VCC = 2.4 V to 2.6 V, TA = –40°C to 85°C (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

(1)

Full-scale reference

(2)

Post-calibration performance and no I/O changes during conversion with VSS as the ground reference

(3)

Uncalibrated performance. This gain error can be eliminated with external calibration.

(4)

The A/D input is a switched-capacitor input. Since the input is switched, the effective input resistance is a measure of the average

resistance.

Integral nonlinearity

±0.03%

FSR(1)

Offset error(2)

140

250

µV

Offset error drift(2)

TA = 25°C to 85°C

2.5

18

µV/°C

Full-scale error(3)

±0.1%

±0.7%

Full-scale error drift

50

PPM/°C

Effective input resistance(4)

8

MΩ

7.8 Electrical Characteristics: Power-On Reset

VCC = 2.4 V to 2.6 V, TA = –40°C to 85°C (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIT–

Negative-going voltage input

1.7

1.8

1.9

V

VHYS

Power-on reset hysteresis

50

125

200

mV

(1)

The frequency error is measured from 4.194 MHz.

(2)

The frequency drift is included and measured from the trimmed frequency at VCC = 2.5 V, TA = 25°C.

(3)

The start-up time is defined as the time it takes for the oscillator output frequency to be within 1% of the specified frequency.

(4)

The frequency error is measured from 32.768 kHz.

(5)

The start-up time is defined as the time it takes for the oscillator output frequency to be ±3%.

7.9 Electrical Characteristics: Oscillator

VCC = 2.4 V to 2.6 V, TA = –40°C to 85°C (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

f(OSC)

Operating frequency

4.194

MHz

f(EIO)

Frequency error(1)(2)

–3%

0.25%

3%

TA = 20°C to 70°C

–2

0.25

2

t(SXO)

Start-up time(3)

2.5

5

ms

LOW FREQUENCY OSCILLATOR

f(LOSC)

Operating frequency

32.768

kHz

f(LEIO)

Frequency error(2)(4)

–2.5%

0.25%

2.5%

TA = 20°C to 70°C

–1.5

0.25

1.5

t(LSXO)

Start-up time(5)

500

ms

(1)

Specified by design. Not production tested.

7.10 Electrical Characteristics: Data Flash Memory

VCC = 2.4 V to 2.6 V, TA = –40°C to 85°C (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tDR

Data retention

See note(1)

10

Years

Flash programming write-cycles

See note(1)

20,000

Cycles

t(WORDPROG)

Word programming time

See note(1)

2

ms

I(DDdPROG)

Flash-write supply current

See note(1)

5

10

mA