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| OPA1688 Datasheet, PDF (7/41 Pages) Texas Instruments – OPA168x SoundPlus 36-V, Single-Supply, 10-MHz, Rail-to-Rail Output Operational Amplifiers | |||
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www.ti.com
OPA1688, OPA1689
SBOS724 â SEPTEMBER 2015
8.6 Electrical Characteristics
At TA = 25°C, VS = ±2.25 V to ±18 V, VCM = VOUT = VS / 2, and RL = 10 kΩ connected to VS / 2, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
AUDIO PERFORMANCE
G = 1, f = 1 kHz, VO = 3.5 VRMS , RL = 2 kΩ
0.00005%
â126
dB
G = 1, f = 1 kHz, VO = 3.5 VRMS , RL = 600 Ω
0.000051%
â126
dB
THD+N
Total harmonic distortion
+ noise
G = 1, f = 1 kHz, PO = 10 mW, RL = 128 Ω
0.000153%
â116
dB
G = 1, f = 1 kHz, PO = 10 mW, RL = 32 Ω
0.000357%
â109
dB
G = 1, f = 1 kHz, PO = 10 mW, RL = 16 Ω
0.000616%
â104
dB
FREQUENCY RESPONSE
GBP
Gain bandwidth product G = 1
10
MHz
SR
Slew rate
G=1
Full-power bandwidth(1) VO = 1 VPP
Overload recovery time VIN Ã gain > VS
Channel separation
(dual)
f = 1 kHz
8
1.3
200
â120
V/µs
MHz
ns
dB
tS
NOISE
Settling time
To 0.1%, VS = ±18 V, G = 1, 10-V step
3
µs
En
Input voltage noise
f = 0.1 Hz to 10 Hz
en
Input voltage noise
density (2)
f = 100 Hz
f = 1 kHz
2.5
µVPP
14
nV/âHz
8
in
Input current noise
density
f = 1 kHz
1.8
fA/âHz
OFFSET VOLTAGE
VOS
dVOS/dT
PSRR
Input offset voltage
VOS over temperature(2)
Power-supply rejection
ratio
TA = 25°C
TA = â40°C to 85°C
TA = â40°C to 85°C
TA = â40°C to 85°C
±0.25
±0.5
±1
±1.5
mV
±1.6
±2 µV/°C
±2.5 µV/V
Channel separation, dc At dc
0.1
µV/V
INPUT BIAS CURRENT
IB
Input bias current
IOS
Input offset current
INPUT VOLTAGE RANGE
TA = 25°C
TA = â40°C to 85°C
TA = 25°C
TA = â40°C to 85°C
±10
±20
pA
±1.5
nA
±3
±7
pA
±250
pA
VCM
Common-mode voltage
range (3)
(Vâ) â 0.1 V
(V+) â 2 V
V
CMRR
Common-mode rejection
ratio
VS = ±2.25 V, (Vâ) â 0.1 V < VCM < (V+) â 2 V,
TA = â40°C to 85°C
VS = ±18 V, (Vâ) â 0.1 V < VCM < (V+) â 2 V,
TA = â40°C to 85°C
90
104
104
120
dB
INPUT IMPEDANCE
Differential
100 || 7
MΩ || pF
Common-mode
6 || 1.5
1012Ω || pF
(1) Full-power bandwidth = SR / (2Ï Ã VP), where SR = slew rate.
(2) Specified by design and characterization.
(3) Common-mode range can extend to the top rail with reduced performance.
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: OPA1688 OPA1689
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