Datasheet

DAC2902
3
SBAS167C
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
At T
MIN
to T
MAX
, +V
A
= +5V, +V
D
= +3.3V, differential transformer coupled output, and 50Ω doubly-terminated, unless otherwise noted. Independent Gain mode.
DYNAMIC PERFORMANCE (Cont.)
Signal-to-Noise Ratio (SNR) 0dBFS Output 68 dBc
f
OUT
= 5.02MHz, f
CLOCK
= 50MHz
Signal-to-Noise and Distortion (SINAD) 0dBFS Output 67 dBc
f
OUT
= 5.02MHz, f
CLOCK
= 50MHz
Channel Isolation
f
OUT
= 1MHz, f
CLOCK
= 52MSPS 85 dBc
f
OUT
= 20MHz, f
CLOCK
= 125MSPS 77 dBc
Output Settling Time
(2)
to 0.1% 30 ns
Output Rise Time
(2)
10% to 90% 2 ns
Output Fall Time
(2)
10% to 90% 2 ns
Glitch Impulse 2pV-s
DC ACCURACY
Full-Scale Output Range
(3)
(FSR) All Bits HIGH, I
OUT
220mA
Output Compliance Range –1.0 +1.25 V
Gain Error—Full-Scale With Internal Reference –5 ±1+5%FSR
Gain Error With External Reference –2.5 ±1 +2.5 %FSR
Gain Matching With Internal Reference –2.0 0.5 +2.0 %FSR
Gain Drift With Internal Reference ±50 ppmFSR/°C
Offset Error With Internal Reference –0.02 +0.02 %FSR
Offset Drift With Internal Reference ±0.2 ppmFSR/°C
Power-Supply Rejection, +V
A
+5V, ±10% –0.2 +0.2 %FSR/V
Power-Supply Rejection, +V
D
+3.3V, ±10% –0.025 +0.025 %FSR/V
Output Noise I
OUT
= 20mA, R
LOAD
= 50Ω 50 pA/√Hz
I
OUT
= 2mA 30 pA/√Hz
Output Resistance 200 kΩ
Output Capacitance I
OUT
, I
OUT
to Ground 6 pF
REFERENCE/CONTROL AMP
Reference Voltage +1.18 +1.25 +1.31 V
Reference Voltage Drift ±50 ppmFSR/°C
Reference Output Current 100 nA
Reference Multiplying Bandwidth 0.3 MHz
Input Compliance Range +0.5 +1.25 V
DIGITAL INPUTS
Logic Coding Straight Binary
Logic High Voltage, V
IH
+V
D
= +5V 3.5 5 V
Logic Low Voltage, V
IL
+V
D
= +5V 0 1.2 V
Logic High Voltage, V
IH
+V
D
= 3.3V 2 3 V
Logic Low Voltage, V
IL
+V
D
= 3.3V 0 0.8 V
Logic High Current
,
I
IH
(4)
+V
D
= 3.3V ±10 µA
Logic Low Current +V
D
= 3.3V ±10 µA
Input Capacitance 5pF
POWER SUPPLY
Supply Voltages
+V
A
+3.0 +5 +5.5 V
+V
D
+3.0 +3.3 +5.5 V
Supply Current
I
VA
(5)
V
A
= +5V, l
OUT
= 20mA 58 65 mA
I
VA
(5)
Power-Down Mode 1.7 3 mA
I
VD
(5)
4.2 7 mA
I
VD
(6)
17 19.5 mA
Power Dissipation
(5)
V
A
= +5V, V
D
= 3.3V, l
OUT
= 20mA 310 350 mW
Power Dissipation
(6)
V
A
= +5V, V
D
= 3.3V, l
OUT
= 20mA 348 390 mW
Power Dissipation
(5)
V
A
= +5V, V
D
= 3.3V, l
OUT
= 2mA 130 mW
Power Dissipation Power-Down Mode 23 38 mW
Thermal Resistance, TQFP-48
θ
JA
60 °C/W
θ
JC
13 °C/W
TEMPERATURE RANGE
Specified Ambient –40 +85 °C
Operating Ambient –40 +85 °C
NOTES: (1) At output l
OUT
, while driving a virtual ground. (2) Measured single-ended into 50Ω load. (3) Nominal full-scale output current is 32 × I
REF
; see Application
section for details. (4) Typically 45µA for the PD pin, which has an internal pull-down resistor. (5) Measured at f
CLOCK
= 25MSPS and f
OUT
= 1MHz. (6) Measured
at f
CLOCK
= 100MSPS and f
OUT
= 40MHz.
DAC2902Y
PARAMETER CONDITIONS MIN TYP MAX UNIT