OPA1644AIPWR datasheet(7/50 Pages) TI2

7 / 50 page

OPA1641, OPA1642, OPA1644

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SBOS484D – DECEMBER 2009 – REVISED APRIL 2016

Product Folder Links: OPA1641 OPA1642 OPA1644

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(1)

Full power bandwidth = SR / (2

π × VP), where SR = slew rate.

(2)

See Figure 19 and Figure 20.

6.5 Electrical Characteristics

at TA = 25°C, VS = 4.5 V to 36 (±2.25 V to ±18 V), RL = 2 kΩ connected to midsupply, and VCM = VOUT = midsupply (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

AUDIO PERFORMANCE

THD+N

Total harmonic distortion + noise

G = +1, f = 1 kHz, VO = 3 VRMS

0.00005%

–126

IMD

Intermodulation distortion

SMPTE/DIN two-tone, 4:1

(60 Hz and 7 kHz), G = +1,

VO = 3 VRMS

0.00004%

–128

DIM 30 (3-kHz square wave and

15-kHz sine wave), G = +1,

VO = 3 VRMS

0.00008%

–122

CCIF twin-tone

(19 kHz and 20 kHz), G = +1,

VO = 3 VRMS

0.00007%

–123

FREQUENCY RESPONSE

GBW

Gain-bandwidth product

G = 1

MHz

Slew rate

G = 1

μs

Full-power bandwidth(1)

VO = 1 VP

3.2

MHz

Overload recovery time(2)

G = –10

600

Channel separation (dual and quad) f = 1 kHz

–126

NOISE

Input voltage noise

f = 20 Hz to 20 kHz

4.3

μVPP

Input voltage noise density

f = 10 Hz

nV/

√Hz

f = 100 Hz

5.8

f = 1 kHz

5.1

Input current noise density

f = 1 kHz

0.8

fA/

√Hz

OFFSET VOLTAGE

VOS

Input offset voltage

VS = ±18 V

3.5

PSRR

VOS vs power supply

VS = ±2.25 V to ±18 V

0.14

μV/V

INPUT BIAS CURRENT

Input bias current

VCM = 0 V

±2

±20

IOS

Input offset current

VCM = 0 V

±2

±20

INPUT VOLTAGE RANGE

VCM

Common-mode voltage range

(V–)–0.1

(V+)–3.5

CMRR

Common-mode rejection ratio

VCM = (V–) – 0.1 V to (V+) – 3.5 V,

VS = ±18 V

120

126

INPUT IMPEDANCE

Differential

1013 || 8

Ω || pF

Common-mode

VCM = (V–) – 0.1 V to (V+) – 3.5 V

1013 || 6

Ω || pF

OPEN-LOOP GAIN

AOL

Open-loop voltage gain

(V–) + 0.2 V

≤ VO ≤ (V+) – 0.2 V,

RL = 10 kΩ

120

134

(V–) + 0.35 V

≤ VO ≤ (V+) – 0.35 V,

RL = 2 kΩ

114

126

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