THS4521_10 Datasheet, PDF (6/48 Pages) Texas Instruments – VERY LOW POWER, NEGATIVE RAIL INPUT, RAIL-TO-RAIL OUTPUT, FULLY DIFFERENTIAL AMPLIFIER

THS4521
THS4522
THS4524
SBOS458D – DECEMBER 2008 – REVISED AUGUST 2010
www.ti.com
ELECTRICAL CHARACTERISTICS: V_S+ – V_S– = 5 V (continued)
At V_S+ = +5 V, V_S– = 0 V, V_OCM = open, V_OUT = 2 V_PP (differential), R_F = 1 kΩ, R_L = 1 kΩ differential, G = 1 V/V, single-ended
input, differential output, input and output referenced to midsupply, unless otherwise noted.
PARAMETER
CONDITIONS
THS4521, THS4522, THS4524
MIN
TYP
MAX
UNIT
TEST
LEVEL ⁽¹⁾
Input Offset Current, continued
Input offset current drift⁽⁴⁾
INPUT
T_A = –40°C to +85°C
T_A = –40°C to +85°C
±60
±75
pA
B
±0.16
±0.25 pA/°C
B
Common-Mode Input Voltage Low
Common-Mode Input Voltage High
Common-Mode Rejection Ratio (CMRR)
T_A = +25°C
T_A = –40°C to +85°C
T_A = +25°C
T_A = –40°C to +85°C
–0.2
–0.1
V
A
–0.1
0
V
B
3.6
3.7
V
A
3.5
3.6
V
B
80
102
dB
A
Input Impedance
100∥0.7
kΩ∥pF
C
OUTPUT
Output Voltage Low
Output Voltage High
Output Current Drive (for linear operation)
POWER SUPPLY
T_A = +25°C
T_A = –40°C to +85°C
T_A = +25°C
T_A = –40°C to +85°C
R_L = 50 Ω
0.10
0.15
V
A
0.115
0.2
V
B
4.7
4.75
V
A
4.65
4.7
V
B
±55
mA
C
Specified Operating Voltage
2.5
5.5
V
B
Quiescent Operating Current, per channel
Power-Supply Rejection Ratio (±PSRR)
T_A = +25°C
T_A = –40°C to +85°C
0.95
1.14
1.25
mA
A
0.9
1.15
1.3
mA
B
80
100
dB
A
POWER DOWN
Enable Voltage Threshold
Ensured on above 2.1 V
1.6
2.1
V
A
Disable Voltage Threshold
Ensured off below 0.7 V
0.7
1.6
V
A
Disable Pin Bias Current
1
mA
C
Power Down Quiescent Current
20
mA
C
Turn-On Time Delay
Turn-Off Time Delay
V_OCM VOLTAGE CONTROL
Small-Signal Bandwidth
Time to V_OUT = 90% of final value,
V_IN= 2 V, R_L = 200 Ω
Time to V_OUT = 10% of original value,
V_IN= 2 V, R_L = 200 Ω
70
ns
B
60
ns
B
23
MHz
C
Slew Rate
55
V/ms
C
Gain
0.98
0.99
1.02
V/V
A
Common-Mode Offset Voltage from V_OCM Input
Input Bias Current
V_OCM Voltage Range
Input Impedance
Measured at V_OUT with V_OCM input driven,
V_OCM = 2.5V ±1 V
±5
±9
mV
B
V_OCM = 2.5V ±1 V
±20
±25
mA
B
1
0.8 to 4.2
4
V
A
46∥1.5
kΩ∥pF
C
Default Output Common-Mode Voltage Offset from
(V_S+– V_S–)/2
THERMAL CHARACTERISTICS
Measured at V_OUT with V_OCM input open
±1
±5
mV
A
Specified Operating Range
All Packages
–40
+85
°C
C
Thermal Resistance, q _JA
THS4521
D
SO-8
Junction-to-ambient
194
°C/W
C
DGK
MSOP-8
269
°C/W
C
THS4522
PW
TSSOP-16
116
°C/W
C
THS4524
DBT
TSSOP-38
81
°C/W
C
(4) Input Offset Voltage Drift, Input Bias Current Drift, and Input Offset Current Drift are average values calculated by taking data at –40°C
and +85°C, computing the difference, and dividing by 125.
6
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