Datasheet

THS4508
www.ti.com .................................................................................................................................... SLAS459E – SEPTEMBER 2005 – REVISED SEPTEMBER 2008
ELECTRICAL CHARACTERISTICS; V
S+
– V
S –
= 5 V: (continued)
Test conditions unless otherwise noted: V
S+
= 5 V, V
S –
= 0 V, G = 10 dB, CM = open, V
O
= 2 V
PP
, R
F
= 349 Ω , R
L
= 200 Ω
Differential, T = +25 ° C Single-Ended Input, Differential Output, Input Referenced to Ground, and Output Referenced to
Mid-supply.
TEST
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
LEVEL
(1)
INPUT
Common-Mode Input Range High 2.3
V B
Common-Mode Input Range Low – 0.3
Common-Mode Rejection Ratio 90 dB B
18.2 ||
Differential Input Impedance M Ω || pF C
2.2
Common-Mode Input Impedance 3.8 || 2.5 M Ω || pF C
OUTPUT
T
A
= +25 ° C 3.7 3.8
Maximum Output Voltage High
T
A
= – 40 ° C to
3.6 3.8 V
+85 ° C
Each output with 100 Ω
A
to mid-supply
T
A
= +25 ° C 1.2 1.3
Minimum Output Voltage Low
T
A
= – 40 ° C to
1.2 1.4
+85 ° C
T
A
= +25 ° C 4.8 5.2
Differential Output Voltage Swing V A
T
A
= – 40 ° C to +85 ° C 4.4 5.2
Differential Output Current Drive R
L
= 10 Ω 96 mA C
Output Balance Error V
O
= 100 mV, f = 1 MHz – 43 dB C
Closed-Loop Output Impedance f = 1 MHz 0.3 Ω C
OUTPUT COMMON-MODE VOLTAGE CONTROL
Small-Signal Bandwidth 700 MHz
Slew Rate 110 V/ µ s
Gain 1 V/V
Output Common-Mode Offset from CM input 1.25 V < CM < 3.5 V 5 mV
C
CM Input Bias Current 1.25 V < CM < 3.5 V ± 40 µ A
1.25 to
CM Input Voltage Range V
3.75
CM Input Impedance 32 || 1.5 k Ω || pF
CM Default Voltage 2.5 V
POWER SUPPLY
Specified Operating Voltage 3.75
(3)
5 5.25 V C
Maximum Quiescent Current T
A
= +25 ° C 39.2 42.5
T
A
= – 40 ° C to +85 ° C 39.2 43.5
mA A
Minimum Quiescent Current T
A
= +25 ° C 35.9 39.2
T
A
= – 40 ° C to +85 ° C 35 39.2
Power-Supply Rejection ( ± PSRR) To differential output 90 dB C
POWER-DOWN Referenced to V
S –
Enable Voltage Threshold Device assured on above 2.1 V > 2.1
V C
Disable Voltage Threshold Device assured off below 0.7 V < 0.7
T
A
= +25 ° C 0.65 0.9
Power-Down Quiescent Current mA A
T
A
= – 40 ° C to +85 ° C 0.65 1
Input Bias Current PD = V
S –
100 µ A
Input Impedance 50 || 2 k Ω || pF
C
Turn-on Time Delay Measured to output on 55 ns
Turn-off Time Delay Measured to output off 10 µ s
(3) See the Application Information section of this data sheet for device operation with full supply voltages less than 5 V.
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