LOG102 datasheet(3/13 Pages) TI

3 / 13 page

www.ti.com

LOG102

SBOS211A

TOTAL ERROR(3)(4)

I1 or I2 remains fixed while other varies

Initial

min to max

I1 or I2 = 1mA

±55

I1 or I2 = 100µA

±30

I1 or I2 = 10µA

±25

I1 or I2 = 1µA

±20

I1 or I2 = 100nA

±25

I1 or I2 = 10nA

±30

I1 or I2 = 1nA

±37

vs Temperature

I1 or I2 = 1mA

±0.4

mV/

°C

I1 or I2 = 100µA

±0.07

mV/

°C

I1 or I2 = 10µA

±0.07

mV/

°C

I1 or I2 = 1µA

±0.07

mV/

°C

I1 or I2 = 100nA

±0.07

mV/

°C

I1 or I2 = 10nA

±0.07

mV/

°C

I1 or I2 = 1nA

±0.4

mV/

°C

vs Supply

I1 or I2 = 1mA

±0.15

mV/ V

I1 or I2 = 100µA

±0.15

mV/ V

I1 or I2 = 10µA

±0.25

mV/ V

I1 or I2 = 1µA

±0.2

mV/ V

I1 or I2 = 100nA

±0.2

mV/ V

I1 or I2 = 10nA

±0.15

mV/ V

I1 or I2 = 1nA

±0.25

mV/ V

FREQUENCY RESPONSE, core log (5)

BW, 3dB

I2 = 10nA

CC = 4500pF

0.1

kHz

I2 = 1µACC = 150pF

kHz

I2 = 10µACC = 150pF

kHz

I2 = 1mA

CC = 50pF

kHz

Step Response

Increasing

I2 = 1µA to 1mA (3 decade)

CC = 150pF

µs

I2 = 100nA to 1µA (1 decade)

CC = 150pF

µs

I2 = 10nA to 100nA (1 decade)

CC = 150pF

110

µs

Decreasing

I2 = 1mA to 1µA (3 decade)

CC = 150pF

µs

I2 = 1µA to 100nA (1 decade)

CC = 150pF

µs

I2 = 100nA to 10nA (1 decade)

CC = 150pF

550

µs

OP AMPS, A3 AND A4

Input Offset Voltage

±175

±750

µV

vs Temperature

TMIN to TMAX

±2

µV/°C

vs Power Supply

VS = ±4.5V to ±18V

µV/V

Input Bias Current(5)

–10

Input Offset Current

±0.5

Input Voltage Range

(V–)

(V+) – 1.5

Common-Mode Rejection

Input Noise, f = 0.1Hz to 10Hz

µVp-p

f = 1kHz

nV/

√Hz

Open Loop Voltage Gain

Gain-Bandwidth Product

1.4

MHz

Slew Rate

G = 1, 2.5V step

0.5

µs

Settling Time, 0.01%

G = 1, 2.5V Step, CL =100pF

µs

Rated Output

VS = 5V, RL = 10kΩ

(V–) + 1.5

(V+) – 0.9

Short-Circuit Current

–ISC /+ISC

–36 /+60

POWER SUPPLY

Operating Range

±4.5

±18

Quiescent Current

IO = 0

1.25

TEMPERATURE RANGE

Specified Range, TMIN to TMAX

070

°C

Operating Range

–40

+85

°C

Storage Range

–40

+125

°C

Thermal Resistance,

SO-14

100

°C/W

NOTES: (1) Log Conformity Error is peak deviation from the best-fit straight line of VO versus Log (I1/I2) curve expressed as a percent of peak-to-peak full-scale

(2) Output core log function is trimmed to 1V output per decade change of input current. (3) Worst-case Total Error for any ratio of I1/I2, is the largest of the two

errors, when I1 and I2 are considered separately. (4) Total I1 + I2 should be kept below 1.1mA on ±5V supply. (5) Bandwidth (3dB) and transient response are a

function of both the compensation capacitor and the level of input current. (6) Positive conventional current flows into input terminals.

ELECTRICAL CHARACTERISTICS (Cont.)

Boldface limits apply over the specified temperature range, TA = 0°C to +70°C.

At TA = +25°C, VS = ±5V, RL = 10kΩ, unless otherwise noted.

LOG102AID

PARAMETER

CONDITION

MIN

TYP

MAX

UNITS

LOG102 数据表(PDF) 3 Page - Texas Instruments

LOG102 数据表(HTML) 3 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13

数据表下载

链接网址

LOG102 数据表(PDF) 3 Page - Texas Instruments

LOG102 数据表(HTML) 3 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13

数据表 下载

链接网址

数据表下载