THS4521 Datasheet, PDF (8/65 Pages) Texas Instruments – VERY LOW POWER, NEGATIVE RAIL INPUT, RAIL-TO-RAIL OUTPUT, FULLY DIFFERENTIAL AMPLIFIER

THS4521, THS4522, THS4524
SBOS458H – DECEMBER 2008 – REVISED JUNE 2015
www.ti.com
7.5 Electrical Characteristics: V_S+ – V_S– = 3.3 V
At V_S+ = 3.3 V, V_S– = 0 V, V_OCM = open, V_OUT = 2 V_PP (differential), R_L = 1 kΩ differential, G = 1 V/V, single-ended input,
differential output, and input and output referenced to midsupply, unless otherwise noted.
PARAMETER
TEST CONDITIONS
TEST
LEVEL ⁽¹⁾
MIN
TYP
MAX UNIT
AC PERFORMANCE
Small-signal bandwidth
Gain bandwidth product
Large-signal bandwidth
Bandwidth for 0.1-dB flatness
Rising slew rate (differential)
Falling slew rate (differential)
Overshoot
Undershoot
Rise time
Fall time
Settling time to 1%
HARMONIC DISTORTION
V_OUT = 100 mV_PP, G = 1
C
V_OUT = 100 mV_PP, G = 2
C
V_OUT = 100 mV_PP, G = 5
C
V_OUT = 100 mV_PP, G = 10
C
V_OUT = 100 mV_PP, G = 10
C
V_OUT = 2 V_PP, G = 1
C
V_OUT = 2 V_PP, G = 1
C
V_OUT = 2-V Step, G = 1, R_L = 200 Ω
C
V_OUT = 2-V Step, G = 1, R_L = 200 Ω
C
V_OUT = 2-V Step, G = 1, R_L = 200 Ω
C
V_OUT = 2-V Step, G = 1, R_L = 200 Ω
C
V_OUT = 2-V Step, G = 1, R_L = 200 Ω
C
V_OUT = 2-V Step, G = 1, R_L = 200 Ω
C
V_OUT = 2-V Step, G = 1, R_L = 200 Ω
C
135
49
18.6
9.3
93
95
20
420
460
1.2%
2.1%
4
3.5
13
MHz
MHz
MHz
MHz
MHz
MHz
MHz
V/μs
V/μs
ns
ns
ns
2nd harmonic
f = 1 MHz, V_OUT = 2 V_PP, G = 1
C
f = 1 kHz, V_OUT = 1 V_RMS, G = 1⁽²⁾,
differential input
C
–85
dBc
–133
dBc
3rd harmonic
f = 1 MHz, V_OUT = 2 V_PP, G = 1
C
f = 1 kHz, V_OUT = 1 V_RMS, G = 1⁽²⁾,
differential input
C
–90
dBc
–141
dBc
Second-order intermodulation distortion
Two-tone, f₁ = 2 MHz, f₂ = 2.2 MHz,
V_OUT = 2-V_PP envelope
C
Third-order intermodulation distortion
Two-tone, f₁ = 2 MHz, f₂ = 2.2 MHz,
V_OUT = 2-V_PP envelope
C
Input voltage noise
f > 10 kHz
C
–83
dBc
–90
dBc
4.6
nV/√Hz
Input current noise
f > 100 kHz
C
0.6
pA/√Hz
Overdrive recovery time
Overdrive = ±0.5 V
C
80
ns
Output balance error
Closed-loop output impedance
V_OUT = 100 mV, f ≤ 2 MHz (differential input)
C
f = 1 MHz (differential)
C
–57
dB
0.3
Ω
Channel-to-channel crosstalk (THS4522,
THS4524)
f = 10 kHz, measured differentially
C
–125
dB
DC PERFORMANCE
Open-loop voltage gain (A_OL)
Input-referred offset voltage
Input offset voltage drift⁽³⁾
Input bias current⁽⁴⁾
Input bias current drift⁽³⁾
Input offset current
Input offset current drift⁽³⁾
T_A = +25°C
T_A = –40°C to +85°C
T_A = –40°C to +85°C
T_A = +25°C
T_A = –40°C to +85°C
T_A = –40°C to +85°C
T_A = +25°C
T_A = –40°C to +85°C
T_A = –40°C to +85°C
A
100
116
dB
A
±0.2
±2 mV
B
±0.5
±3.5 mV
C
±2
μV/°C
B
0.65
0.85 μA
B
0.75
0.95 μA
B
±1.75
±2 nA/°C
B
±30
±180 nA
B
±30
±215 nA
B
±100
±600 pA/°C
(1) Test levels: (A) 100% tested at 25°C. Over temperature limits set by characterization and simulation. (B) Limits set by characterization
and simulation. (C) Typical value only for information.
(2) Not directly measurable; calculated using noise gain of 101 as described in the Applications section, Audio Performance.
(3) Input offset voltage drift, input bias current drift, input offset current drift, and V_OCM drift are average values calculated by taking data at
the maximum-range ambient-temperature end points, computing the difference, and dividing by the temperature range. Maximum drift is
set by the distribution of a large sampling of devices. Drift is not specified by a test or a quality assurance (QA) sample test.
(4) Input bias current is positive out of the device.
8
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